2011 Cadillac CTS Owners Manual

sounds strange or different.

. The exhaust system leaks

due to corrosion or damage. . The vehicle exhaust system has been modified, damaged or improperly repaired.

(Continued)

Driving and Operating

9-25

WARNING (Continued)

. There are holes or openings

in the vehicle body from damage or after-market modifications that are not completely sealed.

If unusual fumes are detected or if it is suspected that exhaust is coming into the vehicle:

. Drive it only with the windows

completely down.

. Have the vehicle repaired

immediately.

Never park the vehicle with the engine running in an enclosed area such as a garage or a building that has no fresh air ventilation.

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9-26

Driving and Operating

Running the Vehicle While Parked It is better not to park with the engine running. But if you ever have to, here are some things to know.

{ WARNING

Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine exhaust may enter the vehicle. Engine exhaust contains Carbon Monoxide (CO) which cannot be seen or smelled. It can cause unconsciousness and even death. Never run the engine in an enclosed area that has no fresh air ventilation. For more information, see Engine Exhaust on page 9‑25.

Automatic Transmission The shift lever is located on the center console between the front seats.

{ WARNING

It can be dangerous to get out of the vehicle if the automatic transmission shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. Do not leave the vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, always set the parking brake and move the shift lever to P (Park).

Follow the proper steps to be sure the vehicle will not move. See Shifting Into Park on page 9‑23. If parking on a hill and pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑53.

There are several different positions for the shift lever. P (Park): This position locks the rear wheels. Use this position when starting the engine because the vehicle cannot move easily.

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Driving and Operating

9-27

Make sure the shift lever is fully in P (Park) before starting the engine. The vehicle has an electronic shift lock release system. Fully apply the regular brakes first and then press the shift lever button before shifting from P (Park) when the ignition key is in ON/RUN. If you cannot shift out of P (Park), ease pressure on the shift lever and push the shift lever all the way into P (Park) as you maintain brake application. Then press the shift lever button and move the shift lever into another gear. See Shifting Out of Park on page 9‑24.

Notice: Shifting to R (Reverse) while the vehicle is moving forward could damage the transmission. The repairs would not be covered by the vehicle warranty. Shift to R (Reverse) only after the vehicle is stopped. R (Reverse): Use this gear to back up. At low vehicle speeds, R (Reverse) can be used to rock the vehicle back and forth to get out of snow, ice, or sand without damaging your transmission. See If the Vehicle is Stuck on page 9‑11 for additional information.

{ WARNING

It is dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. Do not leave the vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, always set the parking brake and move the shift lever to P (Park). See Shifting Into Park on page 9‑23. If you are pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑53.

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Driving and Operating

N (Neutral): In this position, the engine does not connect with the wheels. To restart when the vehicle is already moving, use N (Neutral) only. You can also use N (Neutral) when the vehicle is being towed.

{ WARNING

Shifting into a drive gear while the engine is running at high speed is dangerous. Unless your foot is firmly on the brake pedal, the vehicle could move very rapidly. You could lose control and hit people or objects. Do not shift into a drive gear while the engine is running at high speed.

Notice: Shifting out of P (Park) or N (Neutral) with the engine running at high speed may damage the transmission. The repairs would not be covered by the vehicle warranty. Be sure the engine is not running at high speed when shifting the vehicle. D (Drive): This position is for normal driving. It provides the best fuel economy. If you need more power for passing, and you are: . Going less than 55 km/h

(35 mph), push the accelerator pedal about halfway down.

. Going about 55 km/h (35 mph) or

more, push the accelerator all the way down. The transmission will shift down to a lower gear and have more power.

Downshifting the transmission in slippery road conditions could result in skidding; see “Skidding” under Loss of Control on page 9‑6
While in D (Drive), the CTS‐V vehicle's first forward gear automatic shift after starting the vehicle will be from 1 (First). Afterwards, the CTS‐V vehicles will always start in 2 (Second) gear. While in M (Manual Mode), for increased performance, the vehicle will start in 1 (First) gear. M (Manual Mode): This position allows the driver to select the range of gears appropriate for current driving conditions. See Driver Shift Control (DSC) later in this section. Notice: Spinning the tires or holding the vehicle in one place on a hill using only the accelerator pedal may damage the transmission. If you are stuck, do not spin the tires. When stopping on a hill, use the brakes to hold the vehicle in place.

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Manual Mode

Driver Shift Control (DSC) or Tap Shift Notice: If you drive the vehicle at a high rpm without upshifting while using Driver Shift Control (DSC), you could damage the vehicle. Always upshift when necessary while using DSC. Vehicles with Driver Shift Control (DSC) allow shifting an automatic transmission similar to a manual transmission. Use DSC through the shift lever or the Tap Shift controls on the back of the steering wheel (if equipped). To use the DSC feature using the shift lever: 1. Move the shift lever to

the right from D (Drive) to M (Manual Mode). Once in M (Manual Mode) position, if you do not move the shift lever forward or rearward, the vehicle will be in sport mode.

When you are in sport mode the vehicle will still shift automatically. The transmission may remain in a gear longer than it would in the normal driving mode based on braking, throttle input, and vehicle lateral acceleration. SPORT MODE will be displayed in the DIC momentarily. The vehicle will remain in sport mode if the shift lever is not moved. Sport mode will shift automatically, but remain in a gear longer then it would in normal driving mode based on braking and acceleration.

2. To go from sport mode to DSC, move the shift lever forward to upshift or rearward to downshift.

3. To exit DSC and enter sport

mode, hold the shift lever in the upshift/forward position briefly.

Driving and Operating

9-29

To use the DSC feature with the Tap Shift controls (if equipped):

1. Move the shift lever to

the right from D (Drive) to M (Manual Mode).

2. The Tap Shift controls are on the

back of the steering wheel. Tap the left control to downshift, and the right control to upshift.

3. To return to sport mode, hold the

upshift/right control briefly.

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9-30

Driving and Operating

While using the DSC feature, the vehicle will have firmer, quicker shifting. You can use this for sport driving or when climbing or descending hills, to stay in gear longer, or to downshift for more power or engine braking. The transmission will only allow you to shift into gears appropriate for the vehicle speed and engine revolutions per minute (RPM). The transmission will not automatically shift to the next lower gear if the engine rpm is too high, nor to the next higher gear when the maximum engine rpm is reached. If shifting is prevented for any reason, the currently selected gear will flash multiple times, indicating that the transmission has not shifted gears.

While in the DSC mode, the CTS automatic transmission will automatically downshift when the vehicle comes to a stop. This will allow for more power during acceleration. The CTS-V automatic transmission will not automatically downshift on hard acceleration when in DSC mode. When accelerating the vehicle from a stop in snowy and icy conditions, it is suggested to shift into second gear. A higher gear allows the vehicle to gain more traction on slippery surfaces.

The tachometer display indicates which gear the vehicle is in. The number indicates the requested gear range when moving the shift lever forward or rearward. CTS-V vehicles use tracer lights around the outside of the tachometer as a performance upshift light. These tracers flash to indicate when to shift to the next higher gear to avoid the engine speed limit. See Tachometer on page 5‑13 for more information.

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CTS—V

Manual Transmission If the vehicle has a manual transmission, the shift lever is located on the center console between the front seats. The following explains how to operate the manual transmission.

CTS

1 (First): Press the clutch pedal and shift into 1 (First). Slowly let up on the clutch pedal while pressing on the accelerator pedal. Shift into 1 (First) when you are going less than 40 km/h (25 mph). For CTS-V, shift into 1 (First) when you are going less than 64 km/h (40 mph). After a complete stop, if it is hard to shift into 1 (First), let up on the clutch pedal, then press it back down and shift into 1 (First).

Driving and Operating

9-31

2 (Second): Press the clutch pedal and let up on the accelerator pedal, then shift into 2 (Second). Then, slowly let up on the clutch pedal while accelerating. 3 (Third), 4 (Fourth), 5 (Fifth), and 6 (Sixth): Shift into 3 (Third), 4 (Fourth), 5 (Fifth), and 6 (Sixth) the same for 2 (Second). To stop, let up on the accelerator pedal and press the brake pedal. Just before the vehicle stops, press the clutch pedal and the brake pedal, and shift to Neutral. Neutral: Use this position when you start or idle your engine. Your shift lever is in Neutral when it is centered in the shift pattern, not in any gear. R (Reverse): To back up, press down the clutch pedal, completely stop the vehicle, and shift into R (Reverse). Let up on the clutch pedal slowly while pressing the accelerator pedal.

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9-32

Driving and Operating

The CTS-V transmission prevents easily shifting into R (Reverse) using normal shifting force while the vehicle is moving at more than 5 km/h (3 mph), or when the ignition is in LOCK/OFF. Shift Speeds (Manual Transmission)

If the vehicle speed drops below 32 km/h (20 mph), or if the engine is not running smoothly, downshift to the next lower gear. You may have to downshift two or more gears to keep the engine running smoothly or for good performance.

Up-Shift Light

{ WARNING

If you skip a gear when you downshift, you could lose control of the vehicle. You could injure yourself or others. Do not shift down more than one gear at a time when you downshift.

Notice: If you skip more than one gear when you downshift, or if you race the engine when you release the clutch pedal while downshifting, you could damage the engine, clutch, driveshaft or the transmission. Do not skip gears or race the engine when downshifting.

Vehicles with a manual transmission have an up‐shift light on the instrument panel. This light shows when to shift to the next higher gear for the best fuel economy. When this light comes on, you can shift to the next higher gear if weather, road, and traffic conditions allow. For the best fuel economy, accelerate slowly and shift when the light comes on.

While you accelerate, it is normal for the light to go on and off if you quickly change the position of the accelerator. Ignore the light when you downshift. CTS-V vehicles use tracer lights around the outside of the tachometer as a performance up‐shift light. These tracers flash to indicate when to shift to the next higher gear to avoid the engine speed limit. See Tachometer on page 5‑13 for more information. Skip Shift (CTS‐V) Under light acceleration, the transmission will only allow you to shift from 1 (First) to 4 (Fourth). Shifts from 1 (First) to 2 (Second) or 3 (Third) are not allowed. This helps improve fuel mileage. Under harder acceleration, Skip Shift is disabled, and the driver has all gears available.

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Drive Systems

Brakes

All-Wheel Drive Vehicles with this feature always send engine power to all four wheels. It is fully automatic, and adjusts itself as needed for road conditions. When using a compact spare tire on an AWD vehicle, the system automatically detects the compact spare and disables AWD. To restore AWD operation and prevent excessive wear on the system, replace the compact spare with a full-size tire as soon as possible. See Compact Spare Tire on page 10‑106 for more information.

Antilock Brake System (ABS) This vehicle has the Antilock Brake System (ABS), an advanced electronic braking system that helps prevent a braking skid. When the engine is started and the vehicle begins to drive away, ABS checks itself. A momentary motor or clicking noise might be heard while this test is going on, and it might even be noticed that the brake pedal moves a little. This is normal.

Driving and Operating

9-33

If driving safely on a wet road and it becomes necessary to slam on the brakes and continue braking to avoid a sudden obstacle, a computer senses that the wheels are slowing down. If one of the wheels is about to stop rolling, the computer will separately work the brakes at each wheel. ABS can change the brake pressure to each wheel, as required, faster than any driver could. This can help the driver steer around the obstacle while braking hard. As the brakes are applied, the computer keeps receiving updates on wheel speed and controls braking pressure accordingly.

If there is a problem with ABS, this warning light stays on. See Antilock Brake System (ABS) Warning Light on page 5‑23.

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9-34

Driving and Operating

Remember: ABS does not change the time needed to get a foot up to the brake pedal or always decrease stopping distance. If you get too close to the vehicle in front of you, there will not be enough time to apply the brakes if that vehicle suddenly slows or stops. Always leave enough room up ahead to stop, even with ABS. Using ABS Do not pump the brakes. Just hold the brake pedal down firmly and let ABS work. You might hear the ABS pump or motor operating and feel the brake pedal pulsate, but this is normal. Braking in Emergencies ABS allows the driver to steer and brake at the same time. In many emergencies, steering can help more than even the very best braking.

Parking Brake (Manual)

If the ignition is on, the brake system warning light on the instrument panel cluster should come on. If it does not, you need to have the vehicle serviced. See Brake System Warning Light on page 5‑22 for more information.

The parking brake pedal is located on the lower portion of the instrument panel to the left of the steering wheel. To set the parking brake, hold the brake pedal down, then push the parking brake pedal down.

To release the parking brake, pull the release lever located to the left of the steering wheel on the instrument panel.

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Driving and Operating

9-35

Notice: Driving with the parking brake on can overheat the brake system and cause premature wear or damage to brake system parts. Make sure that the parking brake is fully released and the brake warning light is off before driving. A warning chime will sound if the parking brake is set, the ignition is on, and the vehicle begins to move. To stop the chime, fully release the parking brake. If you are towing a trailer and parking on a hill, see Driving Characteristics and Towing Tips on page 9‑53 for more information.

Parking Brake (Electric)

{ WARNING On vehicles with a manual transmission, releasing the clutch and pressing the accelerator will release the Electric Parking Brake. If the vehicle is not in a gear, the vehicle could move, and you or others could be injured. Make sure the vehicle is in a gear before attempting to drive away. To avoid unexpected vehicle movement, do not partially release the clutch or press the accelerator pedal until you are ready to release the parking brake and drive away.

Vehicles with the electric parking brake (EPB) have a switch in the center console. The EPB takes the place of the manual parking brake system, the foot pedal and release handle. The EPB can always be activated, even if the ignition is OFF. To avoid draining the battery, do not operate the EPB too often without the engine running.

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Driving and Operating

The system has two warning lights and five Driver Information Center (DIC) messages. See Brake System Warning Light on page 5‑22 and Driver Information Center (DIC) on page 5‑27 for more information. In case of insufficient electrical power, the EPB cannot be applied or released. EPB Apply The EPB can be applied any time the vehicle is stopped. The EPB is applied by momentarily lifting up on the EPB switch. Once fully applied, the BRAKE light will be on, and the DIC message PARK BRAKE SET will be displayed. While the brake is being applied, the status light will flash until full apply is reached. If the light does not come on, or remains flashing, you need to have the vehicle serviced. Do not drive the vehicle if the BRAKE light is flashing. See your dealer. See Brake System Warning Light on page 5‑22 for more information.

If the EPB is applied while the vehicle is in motion, a chime will sound, and the DIC message RELEASE PARK BRAKE SWITCH will be displayed. The vehicle will decelerate as long as the switch is held in the up position. Releasing the EPB switch during the deceleration will release the parking brake. If the switch is held in the up position until the vehicle comes to a stop, the EPB will remain applied. If the BRAKE light is on, either the EPB is applied, or there is a failure in the hydraulic brake system. If this light is flashing continuously, the EPB is only partially applied or released, or there is a problem with the EPB. The DIC message SERVICE PARK BRAKE will be displayed. If this light is flashing continuously, release the EPB, and attempt to apply it again. If this light continues to flash, do not drive the vehicle. See your dealer.

If the yellow light is on, the EPB has detected an error in another system and is operating with reduced functionality. To apply the EPB when this light is on, lift up on the EPB switch and hold it in the up position. Full application of the parking brake by the EPB system may take a longer period of time than normal when this light is on. Continue to hold the switch until the BRAKE light remains on. If the yellow light is on, see your dealer. If the EPB fails to apply, the rear wheels should be blocked to prevent vehicle movement. EPB Release To release the EPB, turn the ignition switch to the ON/RUN position, apply and hold the brake pedal, and push down momentarily on the EPB switch. If you attempt to release the EPB without the brake pedal applied, a chime will sound, and the DIC message STEP ON BRAKE TO RELEASE PARK BRAKE will be displayed.

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The EPB is released when the BRAKE light is off and the DIC message PARK BRAKE RELEASED is displayed. If the yellow light is on, the EPB has detected an error in another system and is operating with reduced functionality. To release the EPB when this light is on, push down on the EPB switch and hold it in the down position. EPB release may take a longer period of time than normal when this light is on. Continue to hold the switch until the BRAKE light is off. If the yellow light is on, see your dealer. Notice: Driving with the parking brake on can overheat the brake system and cause premature wear or damage to brake system parts. Make sure that the parking brake is fully released and the red brake warning light is off before driving.

Automatic EPB Release The EPB will automatically release if the vehicle is running, placed into gear, and an attempt is made to drive away. Avoid rapid acceleration when the EPB is applied, to preserve park brake lining life. The EPB can also be used to prevent roll back for vehicles with a manual transmission taking off on a hill. In a situation where no roll back is desired, an applied EPB will allow both feet to be used for the clutch and accelerator pedals in preparation for starting the vehicle moving in the intended direction. In this situation, perform the normal clutch and/or accelerator actions required to begin moving the vehicle. There is no need to push the switch to release the EPB. If you are towing a trailer and parking on a hill, see Driving Characteristics and Towing Tips on page 9‑53 for more information.

Driving and Operating

9-37

Brake Assist (Except CTS-V) This vehicle has a brake assist feature designed to assist the driver in stopping or decreasing vehicle speed in emergency driving conditions. This feature uses the stability system hydraulic brake control module to supplement the power brake system under conditions where the driver has quickly and forcefully applied the brake pedal in an attempt to quickly stop or slow down the vehicle. The stability system hydraulic brake control module increases brake pressure at each corner of the vehicle until the ABS activates. Minor brake pedal pulsation or pedal movement during this time is normal and the driver should continue to apply the brake pedal as the driving situation dictates. The brake assist feature will automatically disengage when the brake pedal is released or brake pedal pressure is quickly decreased.

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Driving and Operating

Ride Control Systems

Traction Control System (TCS) The vehicle has a Traction Control System (TCS) that limits wheel spin. This is especially useful in slippery road conditions. On a rear-wheel-drive vehicle, the system operates if it senses that one or both of the rear wheels are spinning or beginning to lose traction. On an All-Wheel-Drive (AWD) vehicle, the system will operate if it senses that any of the wheels are spinning or beginning to lose traction. When this happens, the system brakes the spinning wheel(s) and/or reduces engine power to limit wheel spin. The system may be heard or felt while it is working, but this is normal.

on page 9‑11 for more information. See Winter Driving on page 9‑9 for information on using TCS when driving in snowy or icy conditions.

This button is located on the instrument panel (CTS) or the steering wheel (CTS-V). Press and release the TCS/ StabiliTrak button and the traction control system will turn off and the TCS/StabiliTrak warning light will come on. Press the button again to turn the system back on. For information on turning StabiliTrak off and on, see StabiliTrak System following. Adding non‐dealer accessories can affect your vehicle's performance. See Accessories and Modifications on page 10‑3 for more information.

The TCS/StabiliTrak warning light flashes when the traction control system is limiting wheel spin. The TCS/StabiliTrak warning light comes on if there is a problem with the traction control system. When the TCS/StabiliTrak warning light is on, the system will not limit wheel spin. Adjust your driving accordingly. See Traction Control System (TCS)/StabiliTrak® Light on page 5‑24 for more information. TCS automatically comes on whenever the vehicle is started. To limit wheel spin, especially in slippery road conditions, the system should always be left on, but it may be necessary to turn the system off if the vehicle is stuck in sand, mud or snow and rocking the vehicle is required. See If the Vehicle is Stuck

Cadillac CTS/CTS-V Owner Manual - 2011

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StabiliTrak® System The vehicle has an electronic stability control system called StabiliTrak. It is an advanced computer controlled system that assists with directional control of the vehicle in difficult driving conditions. StabiliTrak activates when the system senses a discrepancy between the intended path and the direction the vehicle is actually traveling. StabiliTrak selectively applies braking pressure at any one of the vehicle's brakes to help steer the vehicle in the direction which you are steering.

the brake pedal. This is normal. Continue to steer the vehicle in the intended direction. If there is a problem detected with StabiliTrak, SERVICE STABILITRAK displays on the Driver Information Center (DIC) and the TCS/StabiliTrak warning light comes on the instrument panel cluster. When this message and warning light displays, the system is not operational. Driving should be adjusted accordingly. See Driver Information Center (DIC) on page 5‑27 and Messages and Traction Control System (TCS)/ StabiliTrak® Light on page 5‑24 for more information.

When the system activates, this warning light flashes on the instrument panel. A noise may be heard or a vibration may be felt in

This button is located on the instrument panel (CTS) or the steering wheel (CTS-V).

Driving and Operating

9-39

StabiliTrak comes on automatically whenever the vehicle is started. The system should be left on to help assist with directional control of the vehicle. If StabiliTrak needs to be turned off, press and hold the TCS/ StabiliTrak button until the TCS/ StabiliTrak warning light comes on and STABILITRAK OFF comes on the DIC. More steering effort is required when the system is turned off. If cruise control is being used when the StabiliTrak activates, the cruise control will automatically disengage. When road conditions allow, reengage the cruise control. See Cruise Control on page 9‑41 for more information.

Competitive Driving Mode To select this optional handling mode, press the TCS/StabiliTrak button quickly two times and STABILITRAK COMPETITIVE MODE displays in the Driver Information Center (DIC).

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Driving and Operating

While in the StabiliTrak Competitive Mode, the TCS/StabiliTrak warning light comes on, TCS does not limit wheel spin, and more effort is required to turn the steering wheel. Adjust your driving accordingly. Press the TCS/StabiliTrak button again, or turn the ignition to ACC/ACCESSORY and restart the vehicle, to turn TCS back on and turn the TCS/StabiliTrak warning light off. Notice: When traction control is turned off, or Competitive Driving Mode is active, it is possible to lose traction. If you attempt to shift with the drive wheels spinning with a loss of traction, it is possible to cause damage to the transmission. Do not attempt to shift when the drive wheels do not have traction. Damage caused by misuse of the vehicle is not covered. See the warranty book for additional information.

Magnetic Ride Control With this feature on the CTS-V, the Magnetic Ride Control system adjusts the ride of the vehicle to Tour or Sport modes. Magnetic Ride Control monitors the suspension system to determine the proper system response. TOUR: Use for normal city and highway driving. This setting provides a smooth, soft ride. SPORT: Use where road conditions or personal preference demand more control. This setting provides more “feel,” or response to road conditions. The setting can be changed at any time. Based on road conditions, steering wheel angle, and the vehicle speed, the system automatically adjusts to provide the best handling while providing a smooth ride. The Tour and Sport modes will feel similar on a smooth road. Select a new setting whenever driving conditions change.

The Driver Information Center (DIC) briefly displays SUSPENSION MODE TOUR or SUSPENSION MODE SPORT on vehicle startup or when a new mode is selected.

Press and release this button, located in the center of the instrument panel, to change modes.

Limited-Slip Rear Axle Vehicles with a limited-slip rear axle can give more traction on snow, mud, ice, sand, or gravel. When traction is low, this feature allows the drive wheel with the most traction to move the vehicle. The limited-slip rear axle also gives the driver enhanced control when cornering hard or completing a maneuver, such as a lane change.

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Cruise Control

{ WARNING

Cruise control can be dangerous where you cannot drive safely at a steady speed. So, do not use the cruise control on winding roads or in heavy traffic. Cruise control can be dangerous on slippery roads. On such roads, fast changes in tire traction can cause excessive wheel slip, and you could lose control. Do not use cruise control on slippery roads.

With cruise control, a speed of about 40 km/h (25 mph) or more can be maintained without keeping your foot on the accelerator. Cruise control does not work at speeds below about 40 km/h (25 mph). When the brakes are applied, the cruise control turns off.

If the vehicle has the Stabilitrak® system and begins to limit wheel spin while you are using cruise control, the cruise control will automatically disengage. See StabiliTrak® System on page 9‑39. When road conditions allow you to safely use it again, the cruise control can be turned back on.

CTS Shown, CTS‐V Similar

The cruise control buttons are located on the left side of the steering wheel.

Driving and Operating

9-41

I (On/Off): Turns the system on or off. The indicator light on the button turns on when cruise control is on. +RES (Resume/Accelerate): Press briefly to make the vehicle resume to a previously set speed, or press and hold to accelerate. −SET (Set/Coast): Press to set the speed and activate cruise control or make the vehicle decelerate. [ (Cancel): Press to disengage cruise control without erasing the set speed from memory.

Setting Cruise Control If the cruise button is on when not in use, it could get bumped and go into cruise when not desired. Keep the cruise control switch off when cruise is not being used.

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Driving and Operating

The cruise control light on the instrument panel cluster comes on after the cruise control has been set to the desired speed. 1. Press the I button. 2. Get up to the desired speed. 3. Press the −SET button and

release it.

4. Take your foot off the

accelerator.

Resuming a Set Speed If the cruise control is set at a desired speed and then the brakes are applied, the cruise control is disengaged without erasing the set speed from memory. Once the vehicle is driving at about 40 km/h (25 mph) or more, press the +RES button on the steering wheel. The vehicle returns to the previous set speed and stays there.

Increasing Speed While Using Cruise Control If the cruise control system is already activated, . Press and hold the +RES button

on the steering wheel until the desired speed is reached, then release it. To increase vehicle speed in small amounts, press the +RES button. Each time this is done, the vehicle goes about 1.6 km/h (1 mph) faster.

Reducing Speed While Using Cruise Control If the cruise control system is already activated, . Press and hold the −SET button

on the steering wheel until the desired speed is reached, then release it.

To slow down in small amounts, press the −SET button on the steering wheel briefly. Each time this is done, the vehicle goes about 1.6 km/h (1 mph) slower.

Passing Another Vehicle While Using Cruise Control Use the accelerator pedal to increase the vehicle's speed. When you take your foot off the pedal, the vehicle will slow down to the previous set cruise speed.

Using Cruise Control on Hills How well the cruise control works on hills depends upon the vehicle speed, load, and the steepness of the hills. When going up steep hills, you might have to step on the accelerator pedal to maintain the vehicle speed. When going downhill, you might have to brake or shift to a lower gear to keep the vehicle's speed down. When the brakes are applied the cruise control is disengaged.

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Driving and Operating

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Object Detection Systems

Ultrasonic Parking Assist The Ultrasonic Rear Parking Assist (URPA) system assists the driver with parking and avoiding objects while in R (Reverse). URPA operates at speeds less than 8 km/h (5 mph), and the sensors on the rear bumper detect objects up to 2.4 m (8 ft) behind the vehicle, and at least 25.4 cm (10 in) off the ground.

Ending Cruise Control There are four ways to end cruise control: . Step lightly on the brake pedal

(manual and automatic transmissions).

. Press the clutch pedal to the floor (manual transmissions).

. Press [ on the steering wheel.

To turn off the cruise control, press I on the steering wheel.

Erasing Speed Memory The cruise control set speed is erased from memory by pressing the I button or if the ignition is turned off.

{ WARNING

The Ultrasonic Rear Parking Assist (URPA) system does not replace driver vision. It cannot detect:

. Objects that are below the

bumper, underneath the vehicle, or too close or far from the vehicle.

. Children, pedestrians,

bicyclists, or pets.

If you do not use proper care before and while backing, vehicle damage, injury, or death could occur. Even with URPA, always check behind the vehicle before backing up. While backing, be sure to look for objects and check the vehicle's mirrors.

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Driving and Operating

How the System Works URPA comes on automatically when the shift lever is moved into R (Reverse). A single tone sounds to indicate the system is working. Objects must be at least 25.4 cm (10 in) off the ground and below trunk level, and within 2.4 m (8 ft) from the rear bumper to be detected. The distance may be less during warmer or humid weather. A single beep sounds the first time an object is detected between 1.0 m (40 in) and 2.4 m (8 ft) away. Beeping occurs continuously when the vehicle is 0.3 m (12 in) or closer to an object. The system can be disabled through the Driver Information Center (DIC). See “Parking Assist” under Driver Information Center (DIC) on page 5‑27 for more information.

When the System Does Not Seem to Work Properly If the URPA system will not activate due to a temporary condition, the message PARK ASSIST OFF will be displayed on the DIC when the shift lever is moved into R (Reverse). This occurs under the following conditions:

The driver disables the system. The ultrasonic sensors are not clean. Keep the vehicle's rear bumper free of mud, dirt, snow, ice and slush. For cleaning instructions, see Exterior Care on page 10‑113.

. A trailer was attached to the

vehicle, or a bicycle or an object was hanging out of the trunk during the last drive cycle. Once the attached object is removed, URPA will return to normal operation.

. A tow bar is attached to the

vehicle.

The vehicle's bumper is damaged. Take the vehicle to your dealer to repair the system.

. Other conditions may affect

system performance, such as vibrations from a jackhammer or the compression of air brakes on a very large truck.

Rear Vision Camera (RVC) The vehicle may have a Rear Vision Camera system. Read this entire section before using it. The rear vision camera system is designed to help the driver when backing up by displaying a view of the area behind the vehicle.

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{ WARNING

The Rear Vision Camera (RVC) system does not replace driver vision. RVC does not:

. Detect objects that are

outside the camera's field of view, below the bumper, or underneath the vehicle.

. Detect children, pedestrians,

bicyclists, or pets.

Do not back the vehicle by only looking at the RVC screen, or use the screen during longer, higher speed backing maneuvers or where there could be cross-traffic. Your judged distances using the screen will differ from actual distances. If you do not use proper care before backing up, you could hit a vehicle, child, pedestrian, bicyclist, or pet, resulting in vehicle damage, injury, or death.

(Continued)

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WARNING (Continued)

Even though the vehicle has the RVC system, always check carefully before backing up by checking behind and around the vehicle.

Using the System When the driver shifts the vehicle into R (Reverse), the video image automatically appears on the navigation screen, or on the inside rear view mirror. Once the driver shifts out of R (Reverse), the navigation screen will go back to the last screen that had been displayed, or the video image will automatically disappear from the mirror after a delay. The delay that is received after shifting out of R (Reverse) is approximately 5 seconds.

The delay can be cancelled by performing one of the following: . Shifting in to P (Park). . Reach a vehicle speed of

8 km/h (5 mph).

There may be a message on the rear vision camera screen that states “Check Surroundings for Safety.”

Rear Vision Camera Error Messages Service Rear Vision Camera System: This message can display when the system is not receiving information it requires from other vehicle systems. d (Service Rear Vision Camera System Icon): This icon can display when the system is not receiving information it requires from other vehicle systems. If any other problem occurs or if a problem persists, see your dealer.

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Driving and Operating

Rear Vision Camera Location

The area displayed by the camera is limited and does not display objects that are close to either corner or under the bumper. The area displayed can vary depending on vehicle orientation or road conditions. The distance of the image that appears on the screen differs from the actual distance. The following illustration shows the field of view that the camera provides.

The camera is located above the license plate.

A. View displayed by the camera. B. Corner of the rear bumper.

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Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com.

When the System Does Not Seem To Work Properly The rear vision camera system might not work properly or display a clear image if:

It is dark. The sun or the beam of headlights is shining directly into the camera lens. Ice, snow, mud, or anything else builds up on the camera lens. Clean the lens, rinse it with water, and wipe it with a soft cloth. The back of the vehicle is in an accident, the position and mounting angle of the camera can change or the camera can be affected. Be sure to have the camera and its position and mounting angle checked at your dealer. There are extreme temperature changes.

The eighth digit of the Vehicle Identification Number (VIN) shows the code letter or number that identifies the vehicle's engine. The VIN is at the top left of the instrument panel. See Vehicle Identification Number (VIN) on page 12‑1.

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Driving and Operating

Recommended Fuel If the vehicle has a V6 engine, use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service. If the vehicle has the 6.2L V8 engine (VIN Code P), use premium unleaded gasoline with a posted octane rating of 91 or higher. For best performance, use premium unleaded gasoline with a posted octane rating of 93. In an emergency, you can use regular unleaded gasoline with an octane rating of 87 or higher. If 87 octane fuel is used, do not perform any aggressive driving maneuvers such as wide open throttle applications.

You might also hear audible spark knock during acceleration. Refill the tank with premium fuel as soon as possible to avoid damaging the engine. If heavy knocking is heard when using gasoline rated at 91octane or higher, the engine needs service.

Gasoline Specifications (U.S. and Canada Only) At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB‐3.5
or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives on page 9‑49 for additional information.

California Fuel Requirements If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is not available in states adopting California Emissions Standards, the vehicle will operate satisfactorily on fuels meeting federal specifications, but emission control system performance might be affected. The malfunction indicator lamp could turn on and the vehicle might fail a smog‐check test. See Malfunction Indicator Lamp on page 5‑19. If this occurs, return to your authorized dealer for diagnosis. If it is determined that the condition is caused by the type of fuel used, repairs might not be covered by the vehicle warranty.

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Fuels in Foreign Countries Never use leaded gasoline or any other fuel not recommended in the previous text on fuel. Costly repairs caused by use of improper fuel would not be covered by the vehicle warranty. To check the fuel availability, ask an auto club, or contact a major oil company that does business in the country where you will be driving.

Fuel Additives To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control system to work properly. In most cases, nothing should have to be added to the fuel. However, some gasolines contain only the minimum amount of additive required to meet U.S. Environmental Protection Agency

regulations. To help keep fuel injectors and intake valves clean and avoid problems due to dirty injectors or valves, look for gasoline that is advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by the auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com. For customers who do not use TOP TIER Detergent Gasoline regularly, one bottle of GM Fuel System Treatment PLUS, added to the fuel tank at every engine oil change, can help clean deposits from fuel injectors and intake valves. GM Fuel System Treatment PLUS is the only gasoline additive recommended by General Motors. It is available at your dealer. Gasolines containing oxygenates, such as ethers and ethanol, and reformulated gasolines might be available in your area.

We recommend that you use these gasolines, if they comply with the specifications described earlier. However, E85 (85% ethanol) and other fuels containing more than 10% ethanol must not be used in vehicles that were not designed for those fuels. Notice: This vehicle was not designed for fuel that contains methanol. Do not use fuel containing methanol. It can corrode metal parts in the fuel system and also damage plastic and rubber parts. That damage would not be covered under the vehicle warranty. Some gasolines that are not reformulated for low emissions can contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); ask the attendant where you buy gasoline whether the fuel contains MMT. We recommend against the use of such gasolines.

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Driving and Operating

Fuels containing MMT can reduce spark plug life and affect emission control system performance. The malfunction indicator lamp might turn on. If this occurs, return to your dealer for service.

Filling the Tank

{ WARNING

Fuel vapor burns violently and a fuel fire can cause bad injuries. To help avoid injuries to you and others, read and follow all the instructions on the fuel pump island. Turn off the engine when refueling. Do not smoke near fuel or when refueling the vehicle. Do not use cellular phones. Keep sparks, flames, and smoking materials away from fuel. Do not leave the fuel pump unattended when refueling the vehicle. This is against the law in some places. Do not re-enter the vehicle while

(Continued)

WARNING (Continued)

pumping fuel. Keep children away from the fuel pump; never let children pump fuel.

The cap is behind a locking fuel door on the passenger side of the vehicle. The fuel door is locked or unlocked every time the driver’s door is locked or unlocked with the power door locks or the transmitter.

To open the fuel door, push the rearward center edge in and release and it will open. To remove the tethered fuel cap, turn it slowly counterclockwise. While refueling, hang the tethered fuel cap from the hook on the fuel door. If the fuel cap is not installed properly, the TIGHTEN GAS CAP message will appear on the Driver Information Center display. See Fuel System Messages on page 5‑36. When reinstalling the cap, turn it clockwise until it clicks once, otherwise the Malfunction Indicator Lamp could turn on. See Malfunction Indicator Lamp on page 5‑19.

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{ WARNING

Fuel can spray out on you if you open the fuel cap too quickly. If you spill fuel and then something ignites it, you could be badly burned. This spray can happen if the tank is nearly full, and is more likely in hot weather. Open the fuel cap slowly and wait for any hiss noise to stop. Then unscrew the cap all the way.

Be careful not to spill fuel. Do not top off or overfill the tank and wait a few seconds after you have finished pumping before removing the nozzle. Clean fuel from painted surfaces as soon as possible. See Exterior Care on page 10‑113. When replacing the fuel cap, turn it clockwise until it clicks once. Make sure the cap is fully installed. The diagnostic system can determine if the fuel cap has been left off or improperly installed. This would allow fuel to evaporate into the atmosphere. See Malfunction Indicator Lamp on page 5‑19.

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{ WARNING If a fire starts while you are refueling, do not remove the nozzle. Shut off the flow of fuel by shutting off the pump or by notifying the station attendant. Leave the area immediately.

Notice: If a new fuel cap is needed, be sure to get the right type of cap from your dealer. The wrong type of fuel cap might not fit properly, might cause the malfunction indicator lamp to light, and could damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 5‑19.

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Driving and Operating

Filling a Portable Fuel Container

{ WARNING

Never fill a portable fuel container while it is in the vehicle. Static electricity discharge from the container can ignite the fuel vapor. You can be badly burned and the vehicle damaged if this occurs. To help avoid injury to you and others:

. Dispense fuel only into

approved containers.

. Do not fill a container while it

is inside a vehicle, in a vehicle's trunk, pickup bed, or on any surface other than the ground.

(Continued)

WARNING (Continued)

. Bring the fill nozzle in contact

with the inside of the fill opening before operating the nozzle. Contact should be maintained until the filling is complete.

. Do not smoke while

pumping fuel.

. Do not use a cellular phone

while pumping fuel.

Towing

General Towing Information Only use towing equipment that has been designed for the vehicle. Contact your dealer or trailering dealer for assistance with preparing the vehicle for towing a trailer. See the following trailer towing information in this section:

For information on driving while towing a trailer, see “Driving Characteristics and Towing Tips.” For maximum vehicle and trailer weights, see “Trailer Towing.” For information on equipment to tow a trailer, see “Towing Equipment.”

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WARNING (Continued)

have been followed. Ask your dealer for advice and information about towing a trailer with the vehicle.

The vehicle can tow a trailer if it is equipped with the proper trailer towing equipment. To identify the trailering capacity of the vehicle, see Trailer Towing (Except CTS-V) on page 9‑57 or Trailer Towing (CTS-V) on page 9‑58. Trailering changes handling, acceleration, braking, durability, and fuel economy. With the added weight, the engine, transmission, wheel assemblies, and tires are forced to work harder and under greater loads. The trailer also adds wind resistance, increasing the pulling requirements. For safe trailering, correctly use the proper trailering equipment.

The following information has important trailering tips and rules for your safety and that of your passengers. Read this section carefully before pulling a trailer. Pulling a Trailer Here are some important points:

There are many laws, including speed limit restrictions that apply to trailering. Check for legal requirements with state or provincial police.

. Do not tow a trailer at all during the first 1 600 km (1,000 miles) the new vehicle is driven. The engine, axle, or other parts could be damaged.

. During the first 800 km

(500 miles) that a trailer is towed, do not drive over 80 km/h (50 mph) and do not make starts at full throttle. This reduces wear on the vehicle.

For information on towing a disabled vehicle, see Towing the Vehicle on page 10‑111. For information on towing the vehicle behind another vehicle such as a motor home, see Recreational Vehicle Towing on page 10‑111.

Driving Characteristics and Towing Tips

{ WARNING

The driver can lose control when pulling a trailer if the correct equipment is not used or the vehicle is not driven properly. For example, if the trailer is too heavy, the brakes may not work well — or even at all. The driver and passengers could be seriously injured. The vehicle may also be damaged; the resulting repairs would not be covered by the vehicle warranty. Pull a trailer only if all the steps in this section (Continued)

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Driving and Operating

. Vehicles with automatic transmissions can tow in D (Drive) but M (Manual Mode) is recommended. See Manual Mode on page 9‑29 for more information. Use a lower gear if the transmission shifts too often. For vehicles with a manual transmission, it is better not to use the highest gear.

. Use the cruise control when

towing.

. Obey speed limit restrictions.

Do not drive faster than the maximum posted speed for trailers, or no more than 90 km/h (55 mph), to reduce wear on the vehicle.

Driving with a Trailer Towing a trailer requires experience. Get familiar with handling and braking with the added trailer weight. The vehicle is now longer and not as responsive as the vehicle is by itself.

Check all trailer hitch parts and attachments, safety chains, electrical connectors, lamps, tires, and mirror adjustments. If the trailer has electric brakes, start the vehicle and trailer moving and then apply the trailer brake controller by hand to be sure the brakes are working. During the trip, check regularly to be sure that the load is secure, and the lamps and trailer brakes are working properly. Towing with a Stability Control System When towing, the sound of the stability control system might be heard. The system is reacting to the vehicle movement caused by the trailer, which mainly occurs during cornering. This is normal when towing heavier trailers.

Following Distance Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer. This can help to avoid situations that require heavy braking and sudden turns. Passing More passing distance is needed when towing a trailer. Because the rig is longer, it is necessary to go much farther beyond the passed vehicle before returning to the lane. Backing Up Hold the bottom of the steering wheel with one hand. Then, to move the trailer to the left, move that hand to the left. To move the trailer to the right, move your hand to the right. Always back up slowly and, if possible, have someone guide you.

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Making Turns Notice: Making very sharp turns while trailering could cause the trailer to come in contact with the vehicle. The vehicle could be damaged. Avoid making very sharp turns while trailering. When turning with a trailer, make wider turns than normal. Do this so the trailer won't strike soft shoulders, curbs, road signs, trees or other objects. Avoid jerky or sudden maneuvers. Signal well in advance. Turn Signals When Towing a Trailer The arrows on the instrument panel flash whenever signaling a turn or lane change. Properly hooked up, the trailer lamps also flash, telling other drivers the vehicle is turning, changing lanes, or stopping.

When towing a trailer, the arrows on the instrument panel flash for turns even if the bulbs on the trailer are burned out. For this reason you may think other drivers are seeing the signal when they are not. It is important to check occasionally to be sure the trailer bulbs are still working. Driving On Grades Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get hot and no longer work well. Vehicles with an automatic transmission can tow in D (Drive) but M (Manual Mode) is recommended. Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/or hilly conditions. For vehicles with a manual transmission, it is better not to use the highest gear.

When towing at high altitude on steep uphill grades, consider the following: Engine coolant will boil at a lower temperature than at normal altitudes. If the engine is turned off immediately after towing at high altitude on steep uphill grades, the vehicle may show signs similar to engine overheating. To avoid this, let the engine run while parked, preferably on level ground, with the automatic transmission in P (Park) for a few minutes before turning the engine off. For vehicles with manual transmissions, let the engine run while parked, preferably on level ground, with the transmission out of gear and the parking brake applied, for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating on page 10‑24.

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Parking on Hills

{ WARNING

Parking the vehicle on a hill with the trailer attached can be dangerous. If something goes wrong, the rig could start to move. People can be injured, and both the vehicle and the trailer can be damaged. When possible, always park the rig on a flat surface.

If parking the rig on a hill: 1. Press the brake pedal, but do

not shift into P (Park) yet for vehicles with an automatic transmission, or into gear for vehicles with a manual transmission. Turn the wheels into the curb if facing downhill or into traffic if facing uphill.

2. Have someone place chocks

under the trailer wheels.

3. When the wheel chocks are in place, release the brake pedal until the chocks absorb the load.

4. Reapply the brake pedal. Then

apply the parking brake and shift into P (Park) for vehicles with an automatic transmission or into gear for vehicles with a manual transmission.

5. Release the brake pedal. Leaving After Parking on a Hill 1. Apply and hold the brake pedal

while you:

Start the engine, Shift into a gear, and Release the parking brake.

2. Let up on the brake pedal. 3. Drive slowly until the trailer is

clear of the chocks.

4. Stop and have someone pick up

and store the chocks.

Maintenance When Trailer Towing The vehicle needs service more often when pulling a trailer. See this manual's Maintenance Schedule or Index for more information. Things that are especially important in trailer operation are automatic transmission fluid, engine oil, axle lubricant, belts, cooling system, and brake system. It is a good idea to inspect these before and during the trip. Check periodically to see that all hitch nuts and bolts are tight. Engine Cooling When Trailer Towing The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating on page 10‑24.

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Trailer Towing (Except CTS-V and Coupe) Before pulling a trailer, there are three important considerations that have to do with weight:

The weight of the trailer. The weight of the trailer tongue. The total weight on the vehicle's tires.

Weight of the Trailer How heavy can a trailer safely be? It should never weigh more than 450 kg (1,000 lbs). But even that can be too heavy. Speed, altitude, road grades, outside temperature, special equipment, and the amount of tongue weight the vehicle can carry must be considered. See “Weight of the Trailer Tongue” later in this section for more information.

Maximum trailer weight is calculated assuming only the driver is in the tow vehicle and it has all the required trailering equipment. The weight of additional optional equipment, passengers, and cargo in the tow vehicle must be subtracted from the maximum trailer weight. Ask your dealer for our trailering information or advice, or write us at our Customer Assistance Offices. See Roadside Service (U.S. and Canada) on page 13‑7 or Roadside Service (Mexico) on page 13‑9 for more information. Weight of the Trailer Tongue The tongue load (A) of any trailer is an important weight to measure because it affects the total gross weight of the vehicle. The Gross Vehicle Weight (GVW) includes the curb weight of the vehicle, any cargo carried in it, and the people who will be riding in the vehicle.

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If there are a lot of options, equipment, passengers or cargo in the vehicle, it will reduce the tongue weight the vehicle can carry, which will also reduce the trailer weight the vehicle can tow. If towing a trailer, the tongue load must be added to the GVW because the vehicle will be carrying that weight, too. See Vehicle Load Limits on page 9‑11
for more information about the vehicle's maximum load capacity.

For a weight-carrying hitch, the trailer tongue (A) should weigh 10 to 15 percent of the total loaded trailer weight (B).

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Driving and Operating

After loading the trailer, weigh the trailer and then the tongue, separately, to see if the weights are proper. If they are not, adjustments might be made by moving some items around in the trailer. Total Weight on the Vehicle's Tires Inflate the vehicle's tires to the upper limit for cold tires. These numbers can be found on the Certification label or see Vehicle Load Limits on page 9‑11. Do not go over the GVW limit for the vehicle, or the GAWR, including the weight of the trailer tongue.

Trailer Towing (CTS-V and Coupe) The vehicle is neither designed nor intended to tow a trailer.

Towing Equipment

Hitches Use the correct hitch equipment.