Login- Download PDF Manual
-
9-42
Driving and Operating
drive off. After the driver completely stops and holds the vehicle in a complete standstill on a grade, HSA will be automatically activated. During the transition period between when the driver releases the brake pedal and starts to accelerate to drive off on a grade, HSA holds the braking pressure for a maximum of two seconds to ensure that there is no rolling. The brakes will automatically release when the accelerator pedal is applied within the two‐second window. If the vehicle is equipped with the Integrated Trailer Brake Control (ITBC) system, HSA may also apply the trailer brakes. It will not activate if the vehicle is in a drive gear and facing downhill or if the vehicle is facing uphill and in R (Reverse). There may be situations on minor hills (less than 5% grade) with a loaded vehicle or while pulling a trailer where HSA will not activate.
Ride Control Systems
StabiliTrak® System The vehicle has a vehicle stability enhancement system called StabiliTrak. It is an advanced computer-controlled system that assists the driver with directional control of the vehicle in difficult driving conditions. StabiliTrak activates when the computer 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 assist the driver with keeping the vehicle on the intended path. StabiliTrak is on automatically whenever the vehicle is started. To assist with directional control of the vehicle, the system should always be left on. Trailer Sway Control (TSC) is also on automatically when the vehicle is started. See Trailer Sway Control (TSC) on page 9‑77.
When the vehicle is started and begins to move, the system performs several diagnostic checks to insure there are no problems. The system may be heard or felt while it is working. This is normal and does not mean there is a problem with the vehicle. If cruise control is being used when StabiliTrak activates, the cruise control automatically disengages. The cruise control can be re-engaged when road conditions allow. See Cruise Control on page 9‑46. If the system fails to turn on or activate, the StabiliTrak light along with a message will be displayed on the Driver Information Center (DIC). If a DIC message appears, make sure the StabiliTrak system has not been turned off using the Traction Control System (TCS)/StabiliTrak button. Then turn the vehicle off, wait 15 seconds, and then turn it back on again to reset the system. If any of the messages still appear on the DIC, the vehicle should be
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (43,1)
Driving and Operating
9-43
taken in for service. For more information on the DIC messages, see Ride Control System Messages on page 5‑40.
The traction control part of StabiliTrak can be turned off by pressing and releasing the TCS/ StabiliTrak button if both systems (traction control and StabiliTrak) were previously on.
The StabiliTrak light will flash on the instrument panel cluster when the system or the TSC feature is both on and activated. The system may be heard or felt while it is working; this is normal.
The TCS/StabiliTrak button is located on the instrument panel.
To disable both TCS and StabiliTrak, press and hold the TCS/ StabiliTrak button until the StabiliTrak OFF light illuminates and the appropriate DIC message displays. This will also disable the TSC feature. Traction control and StabiliTrak can be turned on by pressing and releasing the TCS/StabiliTrak button if they are not automatically shut off for any other reason. This will also enable the TSC feature.
When the TCS or StabiliTrak system is turned off, the StabiliTrak light and the appropriate message will be displayed on the DIC to warn the driver. The vehicle will still have brake-traction control when traction control is off, but will not be able to use the engine speed management system. See “Traction Control Operation” next for more information. When the TCS has been turned off, system noises may still be heard as a result of the brake-traction control coming on. It is recommended to leave the system on for normal driving conditions, but it may be necessary to turn the system off if the vehicle is stuck in sand, mud, ice or snow, and you want to “rock” the vehicle to attempt to free it. It may also be necessary to turn off the system when driving in extreme off-road conditions where high wheel spin is required. See If the Vehicle Is Stuck on page 9‑14.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (44,1)
9-44
Driving and Operating
When the transfer case is in 4LO, the stability system is automatically disabled, the StabiliTrak light comes on, and the appropriate message will appear on the DIC. Both traction control and StabiliTrak are automatically disabled in this condition. Traction Control Operation The TCS is part of the StabiliTrak system. Traction control limits wheel spin by reducing engine power to the wheels (engine speed management) and by applying brakes to each individual wheel (brake-traction control) as necessary. The TCS is enabled automatically when the vehicle is started. It will activate and the StabiliTrak light will flash if it senses that any of the wheels are spinning or beginning to lose traction while driving. If traction control is turned off, only the brake-traction control portion of traction control will work. The engine speed management will be
disabled. In this mode, engine power is not reduced automatically and the driven wheels can spin more freely. This can cause the brake-traction control to activate constantly. Notice: If the wheel(s) of one axle is allowed to spin excessively while the StabiliTrak®, ABS, brake warning lights, and any relevant DIC messages are displayed, the transfer case could be damaged. The repairs would not be covered by the vehicle warranty. Reduce engine power and do not spin the wheel(s) excessively while these lights and messages are displayed. The TCS may activate on dry or rough roads or under conditions such as heavy acceleration while turning or abrupt upshifts/downshifts of the transmission. When this happens, a reduction in acceleration may be noticed, or a noise or vibration may be heard. This is normal.
If cruise control is being used when the system activates, the StabiliTrak light will flash and cruise control will automatically disengage. Cruise control may be reengaged when road conditions allow. See Cruise Control on page 9‑46. StabiliTrak may also turn off automatically if it determines that a problem exists with the system. If the problem does not clear itself after restarting the vehicle, see your dealer for service. Vehicles with StabiliTrak have a Trailer Sway Control (TSC) feature. See Trailer Sway Control (TSC) on page 9‑77. Vehicles with StabiliTrak have a Hill Start Assist (HSA) feature. See Hill Start Assist (HSA) on page 9‑41. Adding non-dealer accessories can affect the vehicle's performance. See Accessories and Modifications on page 10‑3.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (45,1)
Driving and Operating
9-45
rear of the vehicle to maintain proper vehicle height. The system is activated when the ignition key is turned to ON/RUN and will automatically adjust vehicle height thereafter. The system may exhaust (lower vehicle height) for up to ten minutes after the ignition key has been turned off. You may hear the air compressor operating when the height is being adjusted. If a weight‐distributing hitch is being used, it is recommended to allow the shocks to inflate, thereby leveling the vehicle prior to adjusting the hitch.
Locking Rear Axle Vehicles with a locking rear axle can give more traction on snow, mud, ice, sand, or gravel. It works like a standard axle most of the time, but when traction is low, this feature will allow the rear wheel with the most traction to move the vehicle.
Continuous Damping Control (CDC) This vehicle may have a continuous damping control system called Autoride®. With this feature, improved vehicle ride and handling is provided under a variety of passenger and loading conditions. Autoride is fully automatic and uses a computer controller to continuously monitor vehicle speed, wheel to body position, lift/dive, and steering position of the vehicle. The controller then sends signals to each shock absorber to
independently adjust the damping level to provide the optimum vehicle ride. Autoride also interact with the tow/ haul mode that, when activated, will provide additional control of the shock absorbers. This additional control results in better ride and handling characteristics when the vehicle is loaded or towing a trailer. See “Tow/Haul Mode” under Trailer Towing on page 9‑64 for more information.
Automatic Level Control The automatic level control rear suspension is available on light‐duty vehicles and comes as a part of the Continuous Damping Control (CDC) suspension, if equipped. This type of level control is fully automatic and will provide a better leveled riding position as well as better handling under a variety of passenger and loading conditions. An air compressor connected to the rear shocks will raise or lower the
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (46,1)
9-46
Driving and Operating
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, cruise control is turned off.
If the vehicle has StabiliTrak and the system begins to limit wheel spin, cruise control will automatically disengage. See StabiliTrak® System on page 9‑42. When road conditions allow the cruise control to be safely used again, it can be turned back on.
I (On/Off): Press to turn the system on or off. The indicator light is on when cruise control is on and turns off when cruise control is off.
+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. 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 located
on the steering wheel and release it.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (47,1)
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 speed reaches 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.
Driving and Operating
9-47
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 lower 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 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 on the vehicle speed, the load, and the steepness of the hills. When going up steep hills, pressing the accelerator pedal may be necessary to maintain vehicle speed. When going downhill, Cruise Grade Braking helps maintain the driver selected speed. Cruise Grade Braking is enabled when the vehicle is started and Cruise Control is active. It is not enabled in Range Selection Mode. It assists in maintaining driver selected speed when driving on downhill grades by using the engine and transmission to slow the vehicle. To disable and enable Cruise Grade Braking for the current ignition key cycle, press and hold the Tow/Haul button for three seconds. A DIC message displays. See Transmission Messages on page 5‑42.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (48,1)
9-48
Driving and Operating
For other forms of Grade Braking, see Automatic Transmission on page 9‑28 andTow/Haul Mode on page 9‑32.
Ending Cruise Control There are three ways to end cruise control:
To disengage cruise control, step lightly on the brake pedal.
. Press the [ 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.
Object Detection Systems
Ultrasonic Parking Assist If available, the Ultrasonic Rear Parking Assist (URPA) system uses sensors on the rear bumper to assist with parking and avoiding objects while in R (Reverse). { WARNING
The URPA system does not detect children, pedestrians, bicyclists, animals, or objects below the bumper or that are too close or too far from the vehicle. It is not available at speeds greater than 8 km/h (5 mph). To prevent injury, death, or vehicle damage, even with URPA, always check the area around the vehicle and check all mirrors before backing.
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. URPA operates only at speeds less than 8 km/h (5 mph). An obstacle is indicated by audible beeps. The time between the beeps gets shorter as the vehicle approaches the obstacle. A continuous tone is heard when the distance is less than 30 cm (12 in). To be detected, objects must be at least 25 cm (10 in) off the ground and below liftgate level. Objects must also be within 2.5 m (8 ft) from the rear bumper. This distance may be less during warmer or humid weather.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (49,1)
Turning the System On and Off
Press this button, located next to the radio, to disable URPA. The indicator light comes on and PARK ASSIST OFF displays on the Driver Information Center (DIC). See Object Detection System Messages on page 5‑39. When the System Does Not Seem to Work Properly The following messages may be displayed on the DIC: SERVICE PARK ASSIST: message occurs, take the vehicle to your dealer for repair.
this
Driving and Operating
9-49
PARK ASSIST OFF: This message occurs if the driver disables the system or if the vehicle is driven above 8 km/h (5 mph) in R (Reverse). PARK ASST BLOCKED SEE OWNERS MANUAL: This message can occur under the following conditions:
The ultrasonic sensors are not clean. Keep the rear bumper free of mud, dirt, snow, ice, slush, and frost. The message may not clear until frost or ice has melted all around and inside the sensor.
. A trailer is attached to the
vehicle, or a bicycle or an object hanging out of the liftgate during the current or last drive cycle. URPA will return to normal operation after it is determined the object is removed. This could take a few drive cycles.
. A tow bar is attached to the
vehicle.
Other conditions may affect system performance, such as vibrations from a jackhammer or the compression of air brakes on a very large truck.
Side Blind Zone Alert (SBZA) If available, the Side Blind Zone Alert system is a lane changing aid that assists drivers with avoiding crashes that occur with vehicles in the side blind zones.
{ WARNING
SBZA does not detect vehicles rapidly approaching outside of the side blind zones, pedestrians, bicyclists, or animals. Failure to use proper care when changing lanes may result in injury, death, or vehicle damage. Before making a lane change, always
(Continued)
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (50,1)
9-50
Driving and Operating
WARNING (Continued)
check mirrors, glance over your shoulder, and use the turn signals.
SBZA Detection Zones The SBZA sensor covers a zone of approximately one lane over from both sides of the vehicle, 3.5 m (11 ft). This zone starts at each side mirror and goes back approximately 5.0 m (16 ft). The height of the zone
is approximately between 0.5 m (1.5 ft) and 2.0 m (6 ft) off the ground. Use caution while changing lanes when towing a trailer, as the SBZA detection zones do not change when a trailer is towed.
How the System Works The SBZA symbol lights up in the side mirrors when the system detects a vehicle in the side blind zone, indicating it may be unsafe to change lanes. Before making a lane change, check the SBZA display, check all mirrors, glance over your shoulder, and use the turn signals.
Left Side Mirror
Right Side Mirror
Display
Display
When the vehicle is started, both outside mirror SBZA displays will briefly come on to indicate the system is operating. When the vehicle is moving forward, the left or right side mirror display will light up if a vehicle is detected in that blind zone. If the turn signal is activated and a vehicle is also detected on the same side, the display will flash to give you extra warning not to change lanes. At speeds greater then 32 km/h (20 mph), SBZA displays may come on when approaching or passing other vehicles. SBZA displays may come on when a passed vehicle remains in or drops back into the detection zone. SBZA can be disabled through the Driver Information Center (DIC). See Driver Information Center (DIC) on page 5‑26. If SBZA is disabled by the driver, the SBZA mirror displays will not light up.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (51,1)
Driving and Operating
9-51
When the System Does Not Seem To Work Properly Missed alerts can occur under normal circumstances and will increase in wet conditions. The system does not need to be serviced. SBZA is designed to ignore stationary objects; however, the system may occasionally light up due to guard rails, signs, trees, shrubs, and other stationary objects. This is normal system operation, the vehicle does not need service. If the SBZA displays do not light up when the system is on and vehicles are in the blind zone, the system may need service. Take the vehicle to your dealer. SBZA does not operate when the SBZA sensors in the left or right corners of the rear bumper are covered with mud, dirt, snow, ice, slush, or in heavy rainstorms. For cleaning instructions, see “Washing the Vehicle” under Exterior Care on page 10‑87. If the DIC still displays the SIDE BLIND ZONE SYSTEM
UNAVAILABLE message after cleaning the bumper, see your dealer. The SBZA displays may remain on if a trailer is attached to the vehicle, or a bicycle or object is extending out to either side of the vehicle. When SBZA is disabled for any reason other than the driver turning it off, it cannot be turned back on. The SIDE BLIND ZONE ALERT ON option will not be selectable if the conditions for normal system operation are not met.
SBZA Error Messages The following messages may appear in the DIC: SIDE BLIND ZONE ALERT SYSTEM OFF: This message indicates that the driver has turned the system off. SIDE BLIND ZONE SYSTEM UNAVAILABLE: This message indicates that the SBZA system is disabled either because the sensor is blocked and cannot detect
If this message
vehicles in your blind zone, or the vehicle is passing through an open field of view area, such as the desert, where there is insufficient data for operation. This message may also activate during heavy rain or due to road spray. The vehicle does not need service. For cleaning, see “Washing the Vehicle” under Exterior Care on page 10‑87. SERVICE SIDE BLIND ZONE ALERT SYSTEM: appears, both SBZA displays will remain on indicating there is a problem with the SBZA system. If these displays remain on after continued driving, the system needs service. Take the vehicle to your dealer. FCC Information See Radio Frequency Statement on page 13‑20 for information regarding Part 15 of the Federal Communications Commission (FCC) rules and Industry Canada Standards RSS-GEN/210/220/310.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (52,1)
9-52
Driving and Operating
Rear Vision Camera (RVC) If available, the Rear Vision Camera (RVC) system displays part of the scene behind the vehicle. { WARNING
The RVC system does not display children, pedestrians, bicyclists, animals, or any other object located outside the camera's field of view, below the bumper, or under the vehicle. Perceived distances may be different from actual distances. Do not back the vehicle using only the RVC screen, during longer, higher speed backing maneuvers, or where there could be cross traffic. Failure to use proper care before backing may result in injury, death, or vehicle damage. Always check behind and around the vehicle before backing.
Vehicles without Navigation System The RVC system displays a view of the area behind the vehicle. When the vehicle is on and shifted into R (Reverse) the video image appears on the inside rearview mirror. The video image disappears after the vehicle is shifted out of R (Reverse).
Turning the RVC System On or Off To turn off the RVC system, press and hold z , located on the inside rearview mirror, until the left indicator light turns off. The RVC display is now disabled. To turn the RVC system on, press and hold z until the left indicator light comes on. The RVC system display will appear in the mirror. Vehicles with Navigation System The RVC system is designed to help the driver when backing up by displaying a view of the area behind
the vehicle. When the vehicle is shifted into R (Reverse), the video image appears on the navigation screen. After a delay, the navigation screen displays the last screen after the vehicle is shifted out of R (Reverse).
Turning the RVC System On or Off To turn the RVC system on or off: 1. Shift into P (Park). 2. Press MENU to enter the
configure menu options. Turn the Multifunction knob until the Display feature is highlighted and press the Multifunction knob. Or press the Display screen button
3. Select the Rear Camera Options screen button. The Rear Camera Options screen displays.
4. Select the Video screen button.
When the Video screen button is highlighted the RVC system is on.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (53,1)
The delay that is received after shifting out of R (Reverse) is approximately 10 seconds. The delay can be canceled by performing one of the following: . Pressing a hard key on the
navigation system.
. Shifting into P (Park). . Reach a vehicle speed of
8 km/h (5 mph).
Symbols The navigation system may have a feature that allows for viewing parking assist symbols on the navigation screen while using the RVC. The Ultrasonic Rear Park Assist (URPA) system must not be disabled to use the caution symbols. If URPA has been disabled and the symbols have been turned on, the Rear Parking Assist Symbols Unavailable error message may display. See Ultrasonic Parking Assist on page 9‑48.
Driving and Operating
9-53
The symbols appear near objects detected by the URPA system. The symbol may cover the object when viewing the navigation screen. To turn the symbols on or off: 1. Make sure that URPA has not
been disabled.
2. Shift into P (Park). 3. Press MENU to enter the
configure menu options. Turn the Multifunction knob until the Display feature is highlighted and press the Multifunction knob. Or press the Display screen button
4. Select the Rear Camera Options screen button. The Rear Camera Options screen displays.
5. Touch the Symbols screen
button. The screen button will be highlighted when on.
Guidelines The RVC system has a guideline overlay that can help the driver align the vehicle when backing into a parking spot. To turn the guidelines on or off: 1. Make sure that URPA has not
been disabled.
2. Shift into P (Park). 3. Press MENU to enter the
configure menu options. Turn the Multifunction knob until the Display feature is highlighted and press the Multifunction knob. Or press the Display screen button
4. Select the Rear Camera Options screen button. The Rear Camera Options screen displays.
5. Touch the Guidelines screen
button. The screen button will be highlighted when on.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (54,1)
9-54
Driving and Operating
RVC Location
A. View displayed by the camera
The camera is located above the license plate. This shows the field of view that the camera provides.
A. View displayed by the camera B. Corners of the rear bumper
Displayed images may be further or closer than they appear. The area displayed is limited and objects which are close to either corner of the bumper or under the bumper do not display. When the System Does Not Seem To Work Properly The RVC system might not work properly or display a clear image if:
The RVC is turned off. See “Turning the RVC System On or Off” earlier in this section. It is dark. The sun or the beam of headlamps 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.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (55,1)
The fast flash conditions are used to protect the video device from high temperature conditions. Once conditions return to normal the device will reset and the green indicator will stop flashing.
During any of these fault conditions, the display will be blank and the indicator will flash while the vehicle is in R (Reverse) or until the conditions return to normal. Press and hold z when the left indicator light is flashing to turn off the video display along with the left indicator light.
Driving and Operating
9-55
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. TOP TIER gasoline is only available in the U.S. and Canada.
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.
The RVC system display in the rearview mirror may turn off or not appear as expected due to one of the following conditions. If this occurs the left indicator light on the mirror will flash. . A slow flash may indicate a loss
of video signal, or no video signal present during the reverse cycle.
. A fast flash may indicate that the
display has been on for the maximum allowable time during a reverse cycle, or the display has reached an Over Temperature limit.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (56,1)
9-56
Driving and Operating
Recommended Fuel 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.
Gasoline Specifications At a minimum, gasoline should meet ASTM specification D 4814. 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 9‑57.
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.
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. Vehicles that have a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See Fuel E85 (85% Ethanol) on page 9‑58. For all other vehicles, use only the unleaded gasoline described under Recommended Fuel on page 9‑56.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (57,1)
Driving and Operating
9-57
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 15% 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. Fuels containing MMT can reduce spark plug life and affect emission
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (58,1)
9-58
Driving and Operating
control system performance. The malfunction indicator lamp might turn on. If this occurs, return to your dealer for service.
Fuel E85 (85% Ethanol) Vehicles that have a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). For all other vehicles, use only the unleaded gasoline described under Recommended Fuel on page 9‑56. We encourage the use of E85 in vehicles that are designed to use it. The ethanol in E85 is a “renewable” fuel, meaning it is made from renewable sources such as corn and other crops. Many service stations will not have an 85% ethanol fuel (E85) pump available. The U.S. Department of Energy has an alternative fuels website (www.afdc.energy.gov/afdc/ locator/stations/) that can help you find E85 fuel. Those stations that do have E85 should have a label
indicating ethanol content. Do not use the fuel if the ethanol content is greater than 85%. At a minimum, E85 should meet ASTM Specification D 5798 or CGSB Specification 3.512. Filling the tank with fuel mixtures that do not meet ASTM or CGSB specifications can affect driveability and could cause the malfunction indicator lamp to come on. As the outside temperature approaches freezing, ethanol fuel distributors should supply winter grade ethanol, the same as with unleaded gasoline. It is best not to alternate repeatedly between gasoline and E85. If you do switch fuels, it is recommended that you add as much fuel as possible — do not add less than 11 L (3 gal) when refueling. You should drive the vehicle immediately after refueling for at least 11 km (7 mi) to allow the vehicle to adapt to the change in ethanol concentration.
E85 has less energy per liter (gallon) than gasoline, so you will need to refill the fuel tank more often when using E85 than when you are using gasoline. See Filling the Tank on page 9‑59. Notice: Some additives are not compatible with E85 fuel and can harm the vehicle's fuel system. Do not add anything to E85. Damage caused by additives would not be covered by the vehicle warranty. 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.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (59,1)
Driving and Operating
9-59
WARNING (Continued)
. Fuel can spray out if the fuel
cap is opened too quickly. 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
The tethered fuel cap is located behind a hinged fuel door on the driver side of the vehicle. If the vehicle has E85 fuel capability, the fuel cap will be yellow and state that E85 or gasoline can be used. See Fuel E85 (85% Ethanol) on page 9‑58.
Filling the Tank
{ WARNING
Fuel vapors and fuel fires burn violently and can cause injury or death.
. 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.
. Keep sparks, flames, and
smoking materials away from fuel.
. Do not leave the fuel pump
unattended.
. Do not reenter the vehicle
while pumping fuel.
. Keep children away from the
fuel pump and never let children pump fuel.
(Continued)
To open the fuel door, push the rearward center edge in and release and it will open.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (60,1)
9-60
Driving and Operating
To remove the fuel cap, turn it slowly counterclockwise. The fuel cap has a spring in it; if the cap is released too soon, it will spring back to the right. While refueling, hang the tethered fuel cap from the hook on the fuel door. 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 10‑87. When replacing the fuel cap, insert the tether in its hole before tightening the cap. Turn the fuel cap clockwise until it clicks. It will require more effort to turn the fuel cap on the last turn as you tighten it. 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. If the vehicle has a Driver Information Center (DIC), the TIGHTEN GAS CAP message displays if the fuel cap is not properly installed.
{ 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.
Filling a Portable Fuel Container
{ WARNING
Filling a portable fuel container while it is in the vehicle can cause fuel vapors that can ignite either by static electricity or other means. You or others could be badly burned and the vehicle could be damaged. Always:
. Use approved fuel
containers.
. Remove container from
vehicle, trunk, or pickup bed before filling.
. Place container on the
ground.
(Continued)
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (61,1)
WARNING (Continued)
. Place the nozzle inside the fill
opening of the container before dispensing fuel, and keep it in contact with the fill opening until filling is complete.
. Do not smoke while
pumping fuel.
Driving and Operating
9-61
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. Read the entire section before towing a trailer. For towing a disabled vehicle, see Towing the Vehicle on page 10‑82. For towing the vehicle behind another vehicle such as a motor home, see Recreational Vehicle Towing on page 10‑82.
Driving Characteristics and Towing Tips
Driving with a Trailer When towing a trailer: . Become familiar with the state
and local laws that apply to trailer towing.
. Do not tow a trailer during the first 800 km (500 mi) to prevent damage to the engine, axle, or other parts. Then during the first 800 km (500 mi) of trailer towing, do not drive over 80 km/h (50 mph) and do not make starts at full throttle.
. Vehicles can tow in D (Drive).
Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/ or hilly conditions.
{ WARNING
When towing a trailer, exhaust gases may collect at the rear of the vehicle and enter if the liftgate, trunk/hatch, or rear-most window is open. When towing a trailer:
. Do not drive with the liftgate,
trunk/hatch, or rear-most window open.
(Continued)
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (62,1)
9-62
Driving and Operating
WARNING (Continued)
. Fully open the air outlets on
or under the instrument panel.
. Also adjust the climate
control system to a setting that brings in only outside air. See “Climate Control System” in the Index.
For more information about Carbon Monoxide, see Engine Exhaust on page 9‑27.
Towing a trailer requires a certain amount of experience. The combination you are driving is longer and not as responsive as the vehicle itself. Get acquainted with the handling and braking of the rig before setting out for the open road. Before starting, check all trailer hitch parts and attachments, safety chains, electrical connectors, lamps, tires, and mirrors. If the trailer has electric brakes, start the
combination moving and then apply the trailer brake controller by hand to be sure the brakes work. During the trip, check occasionally to be sure that the load is secure and the lamps and any trailer brakes still work. 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 heavy braking and sudden turns. Passing More passing distance is needed when towing a trailer. The combination will not accelerate as quickly and is longer so 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. 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. 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 will not strike soft shoulders, curbs, road signs, trees, or other objects. Avoid jerky or sudden maneuvers. Signal well in advance. If the trailer turn signal bulbs burn out, the arrows on the instrument cluster will still flash for turns. It is important to check occasionally to be sure the trailer bulbs are still working.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (63,1)
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 get hot and no longer work well. Vehicles can tow in D (Drive). Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/or hilly conditions. The Tow/Haul Mode may be used if the transmission shifts too often. See Tow/Haul Mode on page 9‑32. 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. If the overheat warning comes on, see Engine Overheating on page 10‑18. 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. Turn the wheels into the curb if facing downhill or into traffic if facing uphill.
2. Have someone place chocks
under the trailer wheels.
Driving and Operating
9-63
3. When the wheel chocks are in
place, release the regular brakes until the chocks absorb the load.
4. Reapply the brake pedal. Then
apply the parking brake and shift into P (Park).
5. Release the brake pedal. Leaving After Parking on a Hill 1. Apply and hold the brake pedal. 2. Start the engine. 3. Shift into a gear. 4. Release the parking brake. 5. Let up on the brake pedal. 6. Drive slowly until the trailer is
clear of the chocks.
7. Stop and have someone pick up
and store the chocks.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (64,1)
9-64
Driving and Operating
Maintenance when Trailer Towing The vehicle needs service more often when pulling a trailer. See Maintenance Schedule on page 11‑2. 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.
Trailer Towing If the vehicle has a hybrid engine, see the Hybrid supplement for more information. Do not tow a trailer during break-in. See New Vehicle Break-In on page 9‑19 for more information.
{ 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 have been followed. Ask your dealer for advice and information about towing a trailer with the vehicle.
Notice: Pulling a trailer improperly can damage the vehicle and result in costly repairs not covered by the vehicle warranty. To pull a trailer correctly, follow the advice in this section and see your dealer for important information about towing a trailer with the vehicle. To identify the trailering capacity of the vehicle, read the information in “Weight of the Trailer” that appears later in this section. Trailering is different than just driving the vehicle by itself. Trailering means changes in handling, acceleration, braking, durability and fuel economy. Successful, safe trailering takes correct equipment, and it has to be used properly.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (65,1)
Driving and Operating
9-65
Trailer weight rating (TWR) is calculated assuming the tow vehicle has only the driver but all required trailering equipment. Weight of additional optional equipment, passengers, and cargo in the tow vehicle must be subtracted from the trailer weight rating. Use the following chart to determine how much the vehicle can weigh, based upon the vehicle model and options.
The following information has many time-tested, important trailering tips and safety rules. Many of these are important for your safety and that of your passengers. So please read this section carefully before pulling a trailer. Weight of the Trailer How heavy can a trailer safely be? It depends on how the rig is used. Speed, altitude, road grades, outside temperature, and how much the vehicle is used to pull a trailer are all important. It can depend on any special equipment on the vehicle, and the amount of tongue weight the vehicle can carry. See “Weight of the Trailer Tongue” later in this section for more information.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (66,1)
9-66
Driving and Operating
Vehicle 1500 Series 2WD Short Wheel Base
5.3L V8
5.3L V8
5.3L V8 K5L HD Cooling Pkg1500 Series 2WD Long Wheel Base
5.3L V8
5.3L V8
5.3L V8 K5L HD Cooling Pkg1500 Series 4WD Short Wheel Base
5.3L V8
5.3L V8
5.3L V8 K5L HD Cooling Pkg1500 Series 4WD Long Wheel Base
5.3L V8
5.3L V8
5.3L V8 K5L HD Cooling PkgAxle Ratio
Maximum Trailer Weight
GCWR*
3.08
3.42
3.423.08
3.42
3.423.08
3.42
3.423.08
3.42
3.422 495 kg (5,500 lb) 2 722 kg (6,000 lb) 3 856 kg (8,500 lb)
4 990 kg (11,000 lb) 5 216 kg (11,500 lb) 6 350 kg (14,000 lb)
2 313 kg (5,100 lb) 2 540 kg (5,600 lb) 3 674 kg (8,100 lb)
4 990 kg (11,000 lb) 5 216 kg (11,500 lb) 6 350 kg (14,000 lb)
2 359 kg (5,200 lb) 2 586 kg (5,700 lb) 3 720 kg (8,200 lb)
4 990 kg (11,000 lb) 5 216 kg (11,500 lb) 6 350 kg (14,000 lb)
2 268 kg (5,000 lb) 2 495 kg (5,500 lb) 3 629 kg (8,000 lb)
4 990 kg (11,000 lb) 5 216 kg (11,500 lb) 6 350 kg (14,000 lb)
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (67,1)
Driving and Operating
9-67
Vehicle 2500 Series 2WD Long Wheel Base
6.0L V8
2500 Series 4WD Long Wheel Base
6.0L V8
Axle Ratio
Maximum Trailer Weight
GCWR*
3.73
3.73
4 355 kg (9,600 lb)
7 258 kg (16,000 lb)
4 264 kg (9,400 lb)
7 258 kg (16,000 lb)
*The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. The GCWR for the vehicle should not be exceeded.
Ask your dealer for trailering information or advice, or write us at our Customer Assistance Offices, See Customer Assistance Offices (U.S. and Canada) on page 13‑5 or Customer Assistance Offices (Mexico) on page 13‑5.
Weight of the Trailer Tongue The tongue load (A) of any trailer is very important because it is also part of the vehicle weight. 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 as well as trailer tongue weight. Vehicle options, equipment,
passengers and cargo in the vehicle reduce the amount of tongue weight the vehicle can carry, which will also reduce the trailer weight the vehicle can tow. See Vehicle Load Limits on page 9‑15 for more information about the vehicle's maximum load capacity.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (68,1)
9-68
Driving and Operating
Trailer tongue weight (A) should be 10 percent to 15 percent of the loaded trailer weight (B) up to the maximums for vehicle series and hitch type.
Vehicle Series
Hitch Type
1500/2500
1500/2500Weight Carrying
Weight Distributing
Maximum Tongue
Weight
272 kg (600 lb) 453 kg (1,000 lb)
Do not exceed the maximum allowable tongue weight for the vehicle. Choose the shortest hitch extension that will position the hitch ball closest to the vehicle. This will help reduce the effect of trailer tongue weight on the rear axle. Trailer rating may be limited by the vehicle's ability to carry tongue weight. Tongue weight cannot cause the vehicle to exceed the GVWR (Gross Vehicle Weight Rating) or the RGAWR (Rear Gross Axle Weight Rating). See “Total Weight on the Vehicle's Tires” later in this section for more information. 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 Be sure the vehicle's tires are inflated to the inflation pressures found on the Certification label on the drivers door or see Vehicle Load Limits on page 9‑15 for more information. Make sure not to exceed the GVWR limit for the vehicle, or the RGAWR, with the tow vehicle and trailer fully loaded for the trip including the weight of the trailer tongue. If using a weight distributing hitch, make sure not to exceed the RGAWR before applying the weight distribution spring bars.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (69,1)
Weight of the Trailering Combination It is important that the combination of the tow vehicle and trailer does not exceed any of its weight ratings — GCWR, GVWR, RGAWR, Trailer Weight Rating or Tongue Weight. The only way to be sure it is not exceeding any of these ratings is to weigh the tow vehicle and trailer combination, fully loaded for the trip, getting individual weights for each of these items.
Towing Equipment
Hitches The correct hitch equipment helps maintain combination control. Most small-to-medium trailers can be towed with a weight carrying hitch which simply features a coupler latched to the hitch ball. Larger trailers may require a weight distributing hitch that uses spring bars to distribute the trailer tongue weight among the two vehicle and trailer axles.
See “Weight of the Trailer Tongue” in Trailer Towing on page 9‑64 for rating limits with various hitch types. Consider using sway controls with any trailer. Ask a trailering professional about sway controls or refer to the trailer manufacturer's recommendations and instructions. Weight-Distributing Hitch Adjustment
A. Body to Ground Distance B. Front of Vehicle
Driving and Operating
9-69
When using a weight-distributing hitch, the spring bars should be adjusted so the distance (A) is the same after coupling the trailer to the tow vehicle and adjusting the hitch. Safety Chains Always attach chains between the vehicle and the trailer. Cross the safety chains under the tongue of the trailer to help prevent the tongue from contacting the road if it becomes separated from the hitch. Instructions about safety chains may be provided by the hitch manufacturer or by the trailer manufacturer. If the trailer being towed weighs up to 2 271 kg (5,000 lbs) with a factory-installed step bumper, safety chains may be attached to the attaching points on the bumper, otherwise, safety chains should be attached to holes on the trailer hitch platform. Always leave just enough slack so the combination can turn. Never allow safety chains to drag on the ground.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (70,1)
9-70
Driving and Operating
The seven-wire harness contains the following trailer circuits: . Yellow: Left Stop/Turn Signal . Dark Green: Right Stop/Turn
Signal
. Brown: Taillamps . White: Ground
Light Green: Back-up Lamps
. Red: Battery Feed* . Dark Blue: Trailer Brake* *The fuses for these two circuits are installed in the underhood electrical center, but the wires are not connected. They should be connected by your dealer or a qualified service center.
Trailer Brakes A loaded trailer that weighs more than 900 kg (2,000 lbs) needs to have its own brake system that is adequate for the weight of the trailer. Be sure to read and follow the instructions for the trailer brakes so they are installed, adjusted and maintained properly. Since the vehicle is equipped with StabiliTrak®, the trailer brakes cannot tap into the vehicle's hydraulic system. Trailer Wiring Harness The vehicle is equipped with the following wiring harnesses for towing a trailer.
Basic Trailer Wiring The trailer wiring harness, with a seven-pin connector, is located at the rear of the vehicle and is tied to the vehicle's frame. The harness connector can be plugged into a seven-pin universal heavy-duty trailer connector available through your dealer.
Heavy-Duty Trailer Wiring Harness Package
The vehicle is equipped with the seven-wire trailer towing harness. This harness with a seven-pin universal trailer connector is attached to a bracket on the hitch platform. The seven-wire harness contains the following trailer circuits: . Yellow: Left Stop/Turn Signal . Dark Green: Right Stop/Turn
Signal
. Brown: Taillamps
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (71,1)
. White: Ground
Light Green: Back-up Lamps
. Red: Battery Feed* . Dark Blue: Trailer Brake* *The fuses for these two circuits are installed in the underhood electrical center, but the wires are not connected. They should be connected by your dealer or a qualified service center. If charging a remote (non-vehicle) battery, press the tow/haul mode button located at the end of the shift lever. This will boost the vehicle system voltage and properly charge the battery. If the trailer is too light for tow/haul mode, turn on the headlamps as a second way to boost the vehicle system and charge the battery.
Electric Brake Control Wiring Provisions These wiring provisions are included with the vehicle as part of the trailer wiring package. These provisions are for an electric brake controller. The instrument panel contains blunt cut wires near the data link connector for the trailer brake controller. The harness contains the following wires: . Dark Blue: Brake Signal to
Trailer Connector
. Red/Black: Battery
Light Blue/White: Brake Switch
. White: Ground It should be installed by your dealer or a qualified service center. If the vehicle is equipped with an ITBC, the blunt cuts exist, but are not connected further in the harness. If an aftermarket trailer brake controller is installed, the ITBC must be disconnected. Do not
Driving and Operating
9-71
power both ITBC and aftermarket controllers to control the trailer brakes at the same time. Tow/Haul Mode
Pressing this button at the end of the shift lever turns on and off the tow/haul mode.
This indicator light on the instrument panel cluster comes on when the tow/haul mode is on.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (72,1)
9-72
Driving and Operating
Tow/Haul is a feature that assists when pulling a heavy trailer or a large or heavy load. See Tow/Haul Mode on page 9‑32 for more information. Tow/Haul is designed to be most effective when the vehicle and trailer combined weight is at least 75 percent of the vehicle's Gross Combined Weight Rating (GCWR). See “Weight of the Trailer” earlier in the section. Tow/Haul is most useful under the following driving conditions: . When pulling a heavy trailer or a
large or heavy load through rolling terrain.
. When pulling a heavy trailer or a
large or heavy load in stop and go traffic.
. When pulling a heavy trailer or a
large or heavy load in busy parking lots where improved low speed control of the vehicle is desired.
Operating the vehicle in Tow/Haul when lightly loaded or with no trailer at all will not cause damage. However, there is no benefit to the selection of Tow/Haul when the vehicle is unloaded. Such a selection when unloaded may result in unpleasant engine and transmission driving characteristics and reduced fuel economy. Tow/ Haul is recommended only when pulling a heavy trailer or a large or heavy load. Integrated Trailer Brake Control System
The vehicle may have an Integrated Trailer Brake Control (ITBC) system for electric trailer brakes.
This symbol is located on the Trailer Brake Control Panel on vehicles with an Integrated Trailer Brake Control System. The power output to the trailer brakes is based on the amount of brake pressure being applied by the vehicle’s brake system. This available power output to the trailer brakes can be adjusted to a wide range of trailering situations. The ITBC system is integrated with the vehicle’s brake, anti-lock brake and StabiliTrak systems. In trailering conditions that cause the vehicle’s anti-lock brake or StabiliTrak systems to activate, power sent to the trailer's brakes will be automatically adjusted to minimize trailer wheel lock-up. This does not imply that the trailer has the StabiliTrak system. The vehicle may have a Trailer Sway Control (TSC) feature. See Trailer Sway Control (TSC) on page 9‑77.
Chevrolet Tahoe/Suburban Owner Manual - 2013 - crc2 - 8/14/12
Black plate (73,1)
{ WARNING Connecting a trailer that has a surge, air, or electric-over-hydraulic trailer brake system may result in reduced or complete loss of trailer braking. There may be an increase in stopping distance or trailer instability which could result in personal injury or
