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the vehicle is first started, and then turn off as the vehicle is driven. This could be an early indicator that the
air pressure is getting low and needs to be inflated to the proper pressure. A Tire and Loading Information label shows the size of the original equipment tires and the correct inflation pressure for the tires when they are cold. See Vehicle Load Limits on page 9‑16, for an example of the Tire and Loading Information label and its location. Also see Tire Pressure on page 10‑50. The TPMS can warn about a low tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection on page 10‑55, Tire Rotation on page 10‑55 and Tires on page 10‑41. Notice: Tire sealant materials are not all the same. A non-approved tire sealant could damage the TPMS sensors. TPMS sensor damage caused by using an incorrect tire sealant is not covered by the vehicle warranty. Always use only the
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GM-approved tire sealant available through your dealer or included in the vehicle. TPMS Malfunction Light and Message The TPMS will not function properly if one or more of the TPMS sensors are missing or inoperable. When the system detects a malfunction, the low tire warning light flashes for about one minute and then stays on for the remainder of the ignition cycle. A DIC warning message also displays. The malfunction light and DIC warning message come on at each ignition cycle until the problem is corrected. Some of the conditions that can cause these to come on are: . One of the road tires has been
replaced with the spare tire. The spare tire does not have a TPMS sensor. The malfunction light and DIC message should go off after the road tire is replaced and the sensor matching process is performed
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
successfully. See "TPMS Sensor Matching Process" later in this section. The TPMS sensor matching process was not done or not completed successfully after rotating the tires. The malfunction light and the DIC message should go off after successfully completing the sensor matching process. See "TPMS Sensor Matching Process" later in this section.
. One or more TPMS sensors are
missing or damaged. The malfunction light and the DIC message should go off when the TPMS sensors are installed and the sensor matching process is performed successfully. See your dealer for service.
. Replacement tires or wheels do not match the original equipment tires or wheels. Tires and wheels other than those recommended
could prevent the TPMS from functioning properly. See Buying New Tires on page 10‑57.
. Operating electronic devices or being near facilities using radio wave frequencies similar to the TPMS could cause the TPMS sensors to malfunction.
If the TPMS is not functioning properly, it cannot detect or signal a low tire condition. See your dealer for service if the TPMS malfunction light and DIC message comes on and stays on. TPMS Sensor Matching Process Each TPMS sensor has a unique identification code. The identification code needs to be matched to a new tire/wheel position after rotating the vehicle’s tires or replacing one or more of the TPMS sensors. The TPMS sensor matching process should also be performed after replacing a spare tire with a road tire containing the TPMS sensor. The malfunction light and the DIC
message should go off at the next ignition cycle. The sensors are matched to the tire/wheel positions, using a TPMS relearn tool, in the following order: driver side front tire, passenger side front tire, passenger side rear tire, and driver side rear. See your dealer for service or to purchase a relearn tool. There are two minutes to match the first tire/wheel position, and five minutes overall to match all four tire/wheel positions. If it takes longer, the matching process stops and must be restarted. The TPMS sensor matching process is outlined below: 1. Set the parking brake. 2. Turn the ignition to ON/RUN with
the engine off.
3. Press Q and K on the Remote Keyless Entry (RKE) transmitter at the same time for approximately five seconds. The horn sounds twice to signal the receiver is in relearn mode and
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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TIRE LEARNING ACTIVE message displays on the DIC screen.
4. Start with the driver side
front tire.
5. Place the relearn tool against
the tire sidewall, near the valve stem. Then press the button to activate the TPMS sensor. A horn chirp confirms that the sensor identification code has been matched to this tire and wheel position.
6. Proceed to the passenger side
front tire, and repeat the procedure in Step 5.
7. Proceed to the passenger side
rear tire, and repeat the procedure in Step 5.
8. Proceed to the driver side rear
tire, and repeat the procedure in Step 5. The horn sounds two times to indicate the sensor identification code has been matched to the driver side rear tire, and the TPMS sensor
matching process is no longer active. The TIRE LEARNING ACTIVE message on the DIC display screen goes off.
9. Turn the ignition to LOCK/OFF. 10. Set all four tires to the
recommended air pressure level as indicated on the Tire and Loading Information label.
Tire Inspection We recommend that the tires, including the spare tire, if the vehicle has one, be inspected for signs of wear or damage at least once a month. Replace the tire if: . The indicators at three or
more places around the tire can be seen.
. There is cord or fabric
showing through the tire's rubber.
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. The tread or sidewall is
cracked, cut, or snagged deep enough to show cord or fabric.
. The tire has a bump, bulge,
or split.
. The tire has a puncture, cut, or other damage that cannot be repaired well because of the size or location of the damage.
Tire Rotation Tires should be rotated every 12 000 km (7,500 mi). See Maintenance Schedule on page 11‑2. Tires are rotated to achieve a uniform wear for all tires. The first rotation is the most important. Anytime unusual wear is noticed, rotate the tires as soon as possible, check for proper tire
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
inflation pressure, and check for damaged tires or wheels. If the unusual wear continues after the rotation, check the wheel alignment. See When It Is Time for New Tires on page 10‑57
and Wheel Replacement on page 10‑61.Use this rotation pattern when rotating the tires. Do not include the spare tire in the tire rotation.
WARNING (Continued)
off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, a cloth or a paper towel can be used; however, use a scraper or wire brush later to remove all rust or dirt.
Lightly coat the center of the wheel hub with wheel bearing grease after a wheel change or tire rotation to prevent corrosion or rust build-up. Do not get grease on the flat wheel mounting surface or on the wheel nuts or bolts.
Adjust the front and rear tires to the recommended inflation pressure on the Tire and Loading Information label after the tires have been rotated. See Tire Pressure on page 10‑50
and Vehicle Load Limits on page 9‑16. Reset the Tire Pressure Monitor System. See Tire Pressure Monitor Operation on page 10‑52. Check that all wheel nuts are properly tightened. See “Wheel Nut Torque” under Capacities and Specifications on page 12‑2.{ WARNING
Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come (Continued)
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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When It Is Time for New Tires Factors, such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions affect the wear rate of the tires.
Treadwear indicators are one way to tell when it is time for new tires. Treadwear indicators appear when the tires have only 1.6 mm (1/16 in) or less of tread remaining. Some commercial truck tires may not have treadwear indicators. See Tire
Inspection on page 10‑55 and Tire Rotation on page 10‑55 for additional information. The rubber in tires ages over time. This also applies to the spare tire, if the vehicle has one, even if it is never used. Multiple factors including temperatures, loading conditions, and inflation pressure maintenance affect how fast aging takes place. GM recommends that tires, including the spare if equipped, be replaced after six years, regardless of tread wear. The tire manufacturer date is the last four digits of the DOT Tire Identification Number (TIN) which is molded into one side of the tire sidewall. The first two digits represent the week (01-52) and the last two digits, the year. For example, the third week of the year 2010 would have a four-digit DOT date of 0310.
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Vehicle Storage Tires age when stored normally mounted on a parked vehicle. Park a vehicle that will be stored for at least a month in a cool, dry, clean area away from direct sunlight to slow aging. This area should be free of grease, gasoline or other substances that can deteriorate rubber. Parking for an extended period can cause flat spots on the tires that may result in vibrations while driving. When storing a vehicle for at least a month, remove the tires or raise the vehicle to reduce the weight from the tires.
Buying New Tires GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) system rating. When
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
replacement tires are needed, GM strongly recommends buying tires with the same TPC Spec rating. GM's exclusive TPC Spec system considers over a dozen critical specifications that impact the overall performance of the vehicle, including brake system performance, ride and handling, traction control, and tire pressure monitoring performance. GM's TPC Spec number is molded onto the tire's sidewall near the tire size. If the tires have an all-season tread design, the TPC Spec number will be followed by MS for mud and snow. See Tire Sidewall Labeling on page 10‑43 for additional information. GM recommends replacing worn tires in complete sets of four. Uniform tread depth on all tires will help to maintain the
performance of the vehicle. Braking and handling performance may be adversely affected if all the tires are not replaced at the same time. If proper rotation and maintenance have been done, all four tires should wear out at about the same time. See Tire Rotation on page 10‑55 for information on proper tire rotation. However, if it is necessary to replace only one axle set of worn tires, place the new tires on the rear axle.
{ WARNING
Tires could explode during improper service. Attempting to mount or dismount a tire could cause injury or death. Only your dealer or authorized tire service center should mount or dismount the tires.
{ WARNING
Mixing tires of different sizes, brands, or types may cause loss of control of the vehicle, resulting in a crash or other vehicle damage. Use the correct size, brand, and type of tires on all wheels. This vehicle may have a different size spare than the road tires originally installed on the vehicle. When new, the vehicle included a spare tire and wheel assembly with a similar overall diameter as the road tires and wheels, so it is all right to drive on it. The spare tire was developed for use on this vehicle and will not affect vehicle handling.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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{ WARNING
If different sized wheels are used, there may not be an acceptable level of performance and safety if tires not recommended for those wheels are selected. This increases the chance of a crash and serious injury. Only use GM specific wheel and tire systems developed for the vehicle, and have them properly installed by a GM certified technician.
See Buying New Tires on page 10‑57 and Accessories and Modifications on page 10‑3.
{ WARNING
Using bias-ply tires on the vehicle may cause the wheel rim flanges to develop cracks after many miles of driving. A tire and/or wheel could fail suddenly and cause a crash. Use only radial-ply tires with the wheels on the vehicle.
If the vehicle tires must be replaced with a tire that does not have a TPC Spec number, make sure they are the same size, load range, speed rating, and construction (radial) as the original tires. Vehicles that have a tire pressure monitoring system could give an inaccurate low-pressure warning if non-TPC Spec rated tires are installed. See Tire Pressure Monitor System on page 10‑51.
The Tire and Loading Information label indicates the original equipment tires on the vehicle. See Vehicle Load Limits on page 9‑16 for the label location and more information about the Tire and Loading Information label.
Different Size Tires and Wheels If wheels or tires are installed that are a different size than the original equipment wheels and tires, vehicle performance, including its braking, ride and handling characteristics, stability, and resistance to rollover may be affected. If the vehicle has electronic systems such as antilock brakes, rollover airbags, traction control, electronic stability control, or All-Wheel Drive, the performance of these systems can also be affected.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Uniform Tire Quality Grading Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example:
Treadwear 200 Traction AA Temperature A The following information relates to the system developed by the United States National Highway Traffic Safety Administration (NHTSA), which grades tires by treadwear, traction, and temperature performance. This applies only to vehicles sold in the United States. The grades are molded on the sidewalls of most passenger car tires. The Uniform Tire Quality Grading (UTQG) system does not apply to deep tread, winter tires, compact spare tires, tires with
nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect to these grades, they must also conform to federal safety requirements and additional General Motors Tire Performance Criteria (TPC) standards. All Passenger Car Tires Must Conform to Federal Safety Requirements In Addition To These Grades.
Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire
graded 150 would wear one and one-half (1½) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.
Traction – AA, A, B, C The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire's ability to stop on wet pavement as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance. Warning: The traction grade assigned to this tire is based on
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.
Temperature – A, B, C The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Safety Standard No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by law. Warning: The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.
Wheel Alignment and Tire Balance The tires and wheels were aligned and balanced at the factory to provide the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be necessary on a regular basis. However, check the alignment if there is unusual tire wear or if the vehicle is pulling to one side or the other. If the vehicle vibrates when driving on a smooth
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road, the tires and wheels might need to be rebalanced. See your dealer for proper diagnosis.
Wheel Replacement Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts should be replaced. If the wheel leaks air, replace it. Some aluminum wheels can be repaired. See your dealer if any of these conditions exist. Your dealer will know the kind of wheel that is needed. Each new wheel should have the same load-carrying capacity, diameter, width, offset, and be mounted the same way as the one it replaces. Replace wheels, wheel bolts, wheel nuts, or Tire Pressure Monitor System (TPMS) sensors with new GM original equipment parts.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
{ WARNING
Using the wrong replacement wheels, wheel bolts, or wheel nuts can be dangerous. It could affect the braking and handling of the vehicle. Tires can lose air, and cause loss of control, causing a crash. Always use the correct wheel, wheel bolts, and wheel nuts for replacement.
Notice: The wrong wheel can also cause problems with bearing life, brake cooling, speedometer or odometer calibration, headlamp aim, bumper height, vehicle ground clearance, and tire or tire chain clearance to the body and chassis.
Used Replacement Wheels
{ WARNING
Replacing a wheel with a used one is dangerous. How it has been used or how far it has been driven may be unknown. It could fail suddenly and cause a crash. When replacing wheels, use a new GM original equipment wheel.
Tire Chains If your vehicle is a Hybrid, see the Hybrid Supplement for more information.
{ WARNING
If the vehicle has P265/65R18 or P275/55R20 size tires, do not use tire chains. There is not enough clearance. Tire chains used on a vehicle without the proper amount (Continued)
WARNING (Continued)
of clearance can cause damage to the brakes, suspension, or other vehicle parts. The area damaged by the tire chains could cause loss of control and a crash. Use another type of traction device only if its manufacturer recommends it for the vehicle's tire size combination and road conditions. Follow that manufacturer's instructions. To avoid vehicle damage, drive slow and readjust or remove the traction device if it is contacting the vehicle. Do not spin the wheels. If traction devices are used, install them on the rear tires.
Notice: If the vehicle has P265/ 70R17 size tires, use tire chains only where legal and only when
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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necessary. Use chains that are the proper size for the tires. Install them on the rear tires only. Do not use chains on the front tires. Tighten them as tightly as possible with the ends securely fastened. Drive slowly and follow the chain manufacturer's instructions. If the chains contact the vehicle, stop and retighten them. If the contact continues, slow down until it stops. Driving too fast or spinning the wheels with chains on will damage the vehicle.
If a Tire Goes Flat It is unusual for a tire to blowout while driving, especially if the tires are maintained properly. If air goes out of a tire, it is much more likely to leak out slowly. But if there ever is a blowout, here are a few tips about what to expect and what to do: If a front tire fails, the flat tire creates a drag that pulls the vehicle toward that side. Take your foot off the accelerator pedal and grip the steering wheel firmly. Steer to maintain lane position, and then gently brake to a stop, well off the road, if possible. A rear blowout, particularly on a curve, acts much like a skid and may require the same correction as used in a skid. Stop pressing the accelerator pedal and steer to straighten the vehicle. It may be very bumpy and noisy. Gently brake to a stop, well off the road, if possible.
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{ WARNING
Driving on a flat tire will cause permanent damage to the tire. Re-inflating a tire after it has been driven on while severely underinflated or flat may cause a blowout and a serious crash. Never attempt to re-inflate a tire that has been driven on while severely underinflated or flat. Have your dealer or an authorized tire service center repair or replace the flat tire as soon as possible.
{ WARNING
Lifting a vehicle and getting under it to do maintenance or repairs is dangerous without the appropriate safety equipment and training. If a jack is provided with the vehicle, it is designed only for (Continued)
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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WARNING (Continued)
WARNING (Continued)
changing a flat tire. If it is used for anything else, you or others could be badly injured or killed if the vehicle slips off the jack. If a jack is provided with the vehicle, only use it for changing a flat tire.
If the vehicle is a hybrid, see the hybrid supplement for more information. If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place, well off the road, if possible. Turn on the hazard warning flashers. See Hazard Warning Flashers on page 6‑5.
{ WARNING
Changing a tire can be dangerous. The vehicle can slip off the jack and roll over or fall causing injury or death. Find a
(Continued)
level place to change the tire. To help prevent the vehicle from moving:
1. Set the parking brake firmly. 2. Put the shift lever in
P (Park).
3. For vehicles with
four-wheel-drive with a N (Neutral) transfer case position, be sure the transfer case is in a drive gear — not in N (Neutral). 4. Turn off the engine and do not restart while the vehicle is raised.
5. Do not allow passengers to
remain in the vehicle.
6. Place wheel blocks on both
sides of the tire at the opposite corner of the tire being changed.
When the vehicle has a flat tire (B), use the following example as a guide to assist in the placement of the wheel blocks (A).
A. Wheel Block B. Flat Tire The following information explains how to use the jack and change a tire.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Tire Changing
Removing the Spare Tire and Tools The equipment needed to change a flat tire is stored under the storage tray, located on the driver side trim panel, over the rear wheelhouse.
Regular Wheelbase Shown, Extended Wheelbase Similar 1. Remove the tray to access the tools by pulling up on the finger depression under the jack symbol.
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Use the following tools:
A. Jack Knob B. Wing Nut Retaining the
Tool Bag
C. Wing Nut Retaining the
Wheel Blocks
2. Turn the wing nut retaining the
tool bag (B) counterclockwise to remove it.
3. Turn the jack knob (A)
counterclockwise to release the jack and wheel blocks from the bracket.
4. Turn the wing nut retaining the
wheel blocks (C) counterclockwise to remove the wheel blocks and the wheel block retainer.
A. Jack B. Wheel Blocks C. Jack Handle D. Jack Handle Extensions E. Wheel Wrench
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
To access the spare tire, refer to the following graphics and instructions:
J. Hoist End of Extension Tool K. Spare Tire Lock 1. Open the hoist shaft access
door (C) on the bumper to access the spare tire lock (K). 2. To remove the spare tire lock
(K), insert the ignition key, turn it clockwise and then pull it straight out.
4.
A. Hoist Assembly B. Hoist Shaft C. Hoist Shaft Access Cover/Hole D. Jack Handle Extensions E. Wheel Wrench F. Hoist Cable G. Tire/Wheel Retainer H. Spare Tire (Valve Stem
Pointed Down)
I. Hoist Shaft Access Hole
3. Assemble the two jack handle
extensions (D) and wheel wrench (E), as shown.
Insert the open end of the extension (J) through the hole in the rear bumper (I) (hoist shaft access hole). Be sure the hoist end (J) of the extension connects to the hoist shaft. The ribbed square end of the extension is used to lower the spare tire.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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5. Turn the wheel wrench
counterclockwise to lower the spare tire to the ground. Continue to turn the wheel wrench until the spare tire can be pulled out from under the vehicle. If the spare tire does not lower to the ground, the secondary latch is engaged causing the tire not to lower. See Secondary Latch System on page 10‑76 for more information.
6. Use the wheel wrench hook to
pull the hoist cable closer to assist in reaching the spare tire.
7. Tilt the tire toward the vehicle
with some slack in the cable to access the tire/wheel retainer. Separate the retainer from the guide pin by sliding the retainer up the pin while pressing down on the latch.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
Once the retainer is separated from the guide pin, tilt the retainer and pull it through the center of the wheel along with the cable and latch.
8. Put the spare tire near the
flat tire.
Removing the Flat Tire and Installing the Spare Tire 1. Do a safety check before
proceeding. See If a Tire Goes Flat on page 10‑63 for more information.
2.
If the vehicle has a center cap that covers the wheel fasteners, place the chisel end of the wheel wrench in the slot on the wheel and gently pry the cap out. If the wheel has a bolt-on hub cap, loosen the plastic nut caps by turning the wheel wrench counterclockwise. The plastic nut caps will be retained in the hub cap after it is removed from the wheel.
3. Use the wheel wrench to loosen
all the wheel nuts. Turn the wheel wrench counterclockwise to loosen the wheel nuts. Do not remove the wheel nuts yet.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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4. Position the jack under the
vehicle, as shown.
Jacking Locations (Overall View)
A. Front Position B. Rear Position
Front Position – 2500 Models
Front Position – 1500 Models
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
Front Tire Flat: If the flat tire is on a front tire of the vehicle, use the jack handle and only one jack handle extension. Attach the wheel wrench to the jack handle extension. Attach the jack handle to the jack (A). Position the jack on the frame behind the flat tire where the frame sections overlap. Turn the wheel wrench clockwise to raise the vehicle. Raise the vehicle far enough off the ground so there is enough room for the spare tire to clear the ground.
Rear Tire Flat: If the flat tire is on a rear tire of the vehicle, use the jack handle (B) and both jack handle extensions (C). Attach the wheel wrench (D) to the jack handle extensions (C). Attach the jack handle (B) to the jack (A). Use the jacking pad provided on the rear axle. Turn the wheel wrench (D) clockwise to raise the vehicle. Raise the vehicle far enough off the ground so there is enough room for the spare tire to clear the ground.
{ WARNING
Getting under a vehicle when it is lifted on a jack is dangerous. If the vehicle slips off the jack, you could be badly injured or killed. Never get under a vehicle when it is supported only by a jack.
Rear Position – All Other Models
Rear Position – 1500 Models
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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{ WARNING
Raising the vehicle with the jack improperly positioned can damage the vehicle and even make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to fit the jack lift head into the proper location before raising the vehicle.
5. Remove all of the wheel nuts. 6. Take off the flat tire.
7. Remove any rust or dirt from the wheel bolts, mounting surfaces, and spare wheel.
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{ WARNING
Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, a cloth or a paper towel can be used; however, use a scraper or wire brush later to remove all rust or dirt.
8. Put the wheel nuts back on with
the rounded end of the nuts toward the wheel after mounting the spare tire.
{ WARNING
Never use oil or grease on bolts or nuts because the nuts might come loose. The vehicle's wheel could fall off, causing a crash.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Vehicle Care
9. Tighten each wheel nut by hand.
Then use the wheel wrench to tighten the nuts until the wheel is held against the hub.
10. Turn the wheel wrench
counterclockwise to lower the vehicle. Lower the jack completely.
11. Tighten the nuts firmly in a
crisscross sequence as shown by turning the wheel wrench clockwise.
When reinstalling the regular wheel and tire, also reinstall either the center cap or the bolt-on hub cap, depending on which one the vehicle has.
For center caps, line up the tab on the center cap with the slot in the wheel. The cap only goes in one way. Place the cap on the wheel and press until it snaps into place. For bolt-on hub caps, line up the plastic nut caps with the wheel nuts and tighten clockwise by hand to get them started. Then tighten with the wheel wrench until snug.
{ WARNING
Wheel nuts that are improperly or incorrectly tightened can cause the wheels to become loose or come off. The wheel nuts should be tightened with a torque wrench to the proper torque specification after replacing. Follow the torque specification supplied by the aftermarket manufacturer when using accessory locking wheel nuts. See Capacities and Specifications on page 12‑2 for original equipment wheel nut torque specifications.
Notice: Improperly tightened wheel nuts can lead to brake pulsation and rotor damage. To avoid expensive brake repairs, evenly tighten the wheel nuts in the proper sequence and to the proper torque specification. See Capacities and Specifications on page 12‑2 for the wheel nut torque specification.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
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Storing a Flat or Spare Tire and Tools
{ WARNING
Storing a jack, a tire, or other equipment in the passenger compartment of the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place.
Notice: Storing an aluminum wheel with a flat tire under your vehicle for an extended period of time or with the valve stem pointing up can damage the wheel. Always stow the wheel with the valve stem pointing down and have the wheel/tire repaired as soon as possible.
Store the tire under the rear of the vehicle in the spare tire carrier. Refer to the following graphics and instructions to help you:
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E. Wheel Wrench F. Hoist Cable G. Tire/Wheel Retainer H. Spare Tire/Flat Tire (Valve Stem
Pointed Down)
I. Hoist Shaft Access Hole J. Hoist End of Extension Tool K. Spare Tire Lock
A. Hoist Assembly B. Hoist Shaft C. Hoist Shaft Access Cover/Hole D. Jack Handle Extensions
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Vehicle Care
1. Put the tire (H) on the ground at
the rear of the vehicle with the valve stem pointed down, and to the rear.
2. Tilt the tire toward the vehicle.
Separate the tire/wheel retainer from the guide pin. Pull the pin through the center of the wheel. Tilt the retainer down through the center wheel opening. Make sure the retainer is fully seated across the underside of the wheel.
3. Assemble the two jack handle
extensions (D) and wheel wrench (E) as shown.
4.
Insert the open end of the extension (J) through the hole in the rear bumper (I) (hoist shaft access hole).
5. Raise the tire part way upward. Make sure the retainer is seated in the wheel opening.
6. Raise the tire fully against the
underside of the vehicle by turning the wheel wrench clockwise until you hear two clicks or feel it skip twice. The cable cannot be overtightened.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (75,1)
To store the tools, do the following:
7. Make sure the tire is stored
securely. Push, pull (A), and then try to turn (B) the tire. If the tire moves, use the wheel wrench to tighten the cable.
8. Reinstall the spare tire lock. 9. Reinstall the hoist shaft access
cover.
A. Wheel Blocks B. Tool Bag with Jack Tools C. Retaining Bracket D. Wing Nut Retaining Tool Bag E. Jack F. Wing Nut Retaining Wheel
Blocks
G. Jack Knob
Vehicle Care
10-75
1. Return the tools (wheel wrench,
jack handle, and jack handle extensions) to the tool bag (B). 2. Assemble wheel blocks (A) and
jack (E) together with the wing nut (F).
3. Position the jack (E) and wheel blocks (A) in the driver side trim panel over the wheelhouse.
4. Turn the jack knob (G) clockwise until the jack (E) is secured tight in the mounting bracket. Be sure to position the holes in the base of the jack (E) onto the pin in the mounting bracket.
5. Use the retaining bracket (C) to
fasten the tool bag (B) on the stud and turn the wing nut (D) clockwise to secure.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (76,1)
10-76
Vehicle Care
To release the spare tire from the secondary latch:
“Storing a Flat or Spare Tire and Tools” under Tire Changing on page 10‑65.
{ WARNING
Before beginning this procedure read all the instructions. Failure to read and follow the instructions could damage the hoist assembly and you and others could get hurt. Read and follow the instructions listed next.
1. Check under the vehicle to see if
2.
the cable end is visible. If the cable is not visible proceed to Step 6. If it is visible, first try to tighten the cable by turning the wheel wrench clockwise until you hear two clicks or feel it skip twice. You cannot overtighten the cable.
6. Return the storage tray to its
original stored position.
Secondary Latch System This vehicle has an underbody-mounted tire hoist assembly equipped with a secondary latch system. It is designed to stop the spare tire from suddenly falling off your vehicle. For the secondary latch to work, the spare must be installed with the valve stem pointing down. See
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (77,1)
Vehicle Care
10-77
3. Loosen the cable by turning the wrench counterclockwise three or four turns.
4. Repeat this procedure at least
two times. If the spare tire lowers to the ground, continue with Step 5 under “Removing the Spare Tire and Tools” under Tire Changing on page 10‑65. If the spare does not lower, turn the wrench counterclockwise until approximately 15 cm (6 in) of cable is exposed.
5.
6. Stand the wheel blocks on their
shortest ends, with the backs facing each other.
8. Attach the jack handle,
extension, and wheel wrench to the jack and place it (with the wheel blocks) under the vehicle toward the front of the rear bumper.
A. Jack B. Wheel Blocks
7. Place the bottom edge of the
jack (A) on the wheel blocks (B), separating them so that the jack is balanced securely.
9. Position the center lift point of
the jack under the center of the spare tire.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (78,1)
10-78
Vehicle Care
10. Turn the wrench clockwise to
raise the jack until it lifts the end fitting.
11. Continue raising the jack until
the spare tire stops moving upward and is held firmly in place. The secondary latch has released and the spare tire is balancing on the jack.
12. Lower the jack by turning the
wheel wrench counterclockwise. Keep lowering the jack until the spare tire slides off the jack or is hanging by the cable.
{ WARNING
Someone standing too close during the procedure could be injured by the jack. If the spare tire does not slide off the jack completely, make sure no one is behind you or on either side of you as you pull the jack out from under the spare.
13. Disconnect the jack handle from the jack and carefully remove the jack. Use one hand to push against the spare while firmly pulling the jack out from under the spare tire with the other hand. If the spare tire is hanging from the cable, insert the hoist end of extension, and wheel wrench into the hoist shaft hole in the bumper and turn the wheel wrench counterclockwise to lower the spare the rest of the way.
14. Turn the wheel wrench in the hoist shaft hole in the bumper clockwise to raise the cable back up if the cable is hanging under the vehicle.
Have the hoist assembly inspected as soon as you can. You will not be able to store a spare or flat tire using the hoist assembly until it has been inspected and/or replaced.
To continue changing the flat tire, see “Removing the Flat Tire and Installing the Spare Tire” under Tire Changing on page 10‑65.
Full-Size Spare Tire Your vehicle, when new, had a fully-inflated spare tire. A spare tire may lose air over time, so check its inflation pressure regularly. See Tire Pressure on page 10‑50 and Vehicle Load Limits on page 9‑16
for information regarding proper tire inflation and loading your vehicle. For instruction on how to remove, install or store a spare tire, see “Removing the Flat Tire and Installing the Spare” and “Storing a Flat or Spare Tire and Tools” under Tire Changing on page 10‑65.GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (79,1)
Notice: If the vehicle has four-wheel drive and a different size spare tire is installed, do not drive in four-wheel drive until the flat tire is repaired and/or replaced. The vehicle could be damaged and the repairs would not be covered by the warranty. Never use four-wheel drive when a different size spare tire is installed on the vehicle. Your vehicle may have a different size spare tire than the road tires originally installed on your vehicle. This spare tire was developed for use on your vehicle, so it is all right to drive on it. If your vehicle has four-wheel drive and the different size spare tire is installed, keep the vehicle in two-wheel drive.
After installing the spare tire on your vehicle, you should stop as soon as possible and make sure the spare tire is correctly inflated. Have the damaged or flat road tire repaired or replaced as soon as you can and installed back onto your vehicle. This way, the spare tire will be available in case you need it again. Do not mix tires and wheels of different sizes, because they will not fit. Keep your spare tire and its wheel together. If your vehicle has a spare tire that does not match your vehicle's original road tires and wheels in size and type, do not include the spare in the tire rotation.
Vehicle Care
10-79
Jump Starting For more information about the vehicle battery, see Battery on page 10‑25. If the vehicle is a Hybrid, see the Hybrid manual for more information. If the vehicle's battery (or batteries) has run down, you may want to use another vehicle and some jumper cables to start your vehicle. Be sure to use the following steps to do it safely.
{ WARNING
Batteries can hurt you. They can be dangerous because:
. They contain acid that can
burn you.
. They contain gas that can
explode or ignite.
. They contain enough electricity to burn you.
(Continued)
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (80,1)
warranty. Whenever possible, turn off or unplug all accessories on either vehicle when jump starting the vehicle. 3. Turn off the ignition on both
vehicles. Unplug unnecessary accessories plugged into the accessory power outlets. Turn off the radio and all the lamps that are not needed. This avoids sparks and helps save both batteries. And it could save the radio!
10-80
Vehicle Care
WARNING (Continued)
If you do not follow these steps exactly, some or all of these things can hurt you.
Notice: Ignoring these steps could result in costly damage to the vehicle that would not be covered by the warranty. Trying to start the vehicle by pushing or pulling it will not work, and it could damage the vehicle. 1. Check the other vehicle. It must
have a 12-volt battery with a negative ground system.
Notice: Only use a vehicle that has a 12-volt system with a negative ground for jump starting. If the other vehicle does not have a 12-volt system with a negative ground, both vehicles can be damaged.
2. Get the vehicles close enough
so the jumper cables can reach, but be sure the vehicles are not touching each other. If they are, it could cause a ground connection you do not want. You would not be able to start your vehicle, and the bad grounding could damage the electrical systems. To avoid the possibility of the vehicles rolling, set the parking brake firmly on both vehicles involved in the jump start procedure. Put the automatic transmission in P (Park) or a manual transmission in N (Neutral) before setting the parking brake. If the vehicle has a four-wheel-drive transfer case with a N (Neutral) position, be sure the transfer case is in a drive gear, not in N (Neutral).
Notice: If any accessories are left on or plugged in during the jump starting procedure, they could be damaged. The repairs would not be covered by the vehicle
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (81,1)
4. Open the hood on the other
vehicle and locate the positive (+) and negative (−) terminal locations on that vehicle. Your vehicle has a remote positive (+) jump starting terminal and a remote negative (−) jump starting terminal. You should always use these remote terminals instead of the terminals on the battery. If the vehicle has a remote positive (+) terminal, it is located under a red plastic cover at the positive battery post. To uncover the remote positive (+) terminal, open the red plastic cover.
The remote negative (−) terminal is a stud located on the right front of the engine, where the negative battery cable attaches. See Engine Compartment Overview on page 10‑5 for more information on the location of the remote positive (+) and remote negative (−) terminals.
Vehicle Care
10-81
{ WARNING
An electric fan can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan.
{ WARNING
Using an open flame near a battery can cause battery gas to explode. People have been hurt doing this, and some have been blinded. Use a flashlight if you need more light. Be sure the battery has enough water. You do not need to add water to the battery installed in your new vehicle. But if a battery has filler caps, be sure the right amount of fluid is there. If it is low, (Continued)
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (82,1)
10-82
Vehicle Care
WARNING (Continued)
add water to take care of that first. If you do not, explosive gas could be present. Battery fluid contains acid that can burn you. Do not get it on you. If you accidentally get it in your eyes or on your skin, flush the place with water and get medical help immediately.
{ WARNING
Fans or other moving engine parts can injure you badly. Keep your hands away from moving parts once the engine is running.
5. Check that the jumper cables do
not have loose or missing insulation. If they do, you could get a shock. The vehicles could be damaged too. Before you connect the cables, here are some basic things you should know. Positive (+) will go to positive (+) or to a remote positive (+) terminal if the vehicle has one. Negative (−) will go to a heavy, unpainted metal engine part or to a remote negative (−) terminal if the vehicle has one. Do not connect positive (+) to negative (−) or you will get a short that would damage the battery and maybe other parts too. And do not connect the negative (−) cable to the negative (−) terminal on the dead battery because this can cause sparks.
6. Connect the red positive (+)
cable to the positive (+) terminal of the vehicle with the dead battery. Use a remote positive (+) terminal if the vehicle has one.
7. Do not let the other end touch
metal. Connect it to the positive (+) terminal of the good battery. Use a remote positive (+) terminal if the vehicle has one.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (83,1)
Vehicle Care
10-83
8. Now connect the black
negative (−) cable to the negative (−) terminal of the good battery. Use a remote negative (−) terminal if the vehicle has one. Do not let the other end touch anything until the next step. The other end of the negative (−) cable does not go to the dead battery. It goes to a heavy, unpainted metal engine part or to the remote negative (−) terminal on the vehicle with the dead battery.
9. Connect the other end of the
negative (−) cable to the remote negative (−) terminal, on the vehicle with the dead battery.
10. Now start the vehicle with the
good battery and run the engine for a while.
11. Try to start the vehicle that had
the dead battery. If it will not start after a few tries, it probably needs service.
Notice: If the jumper cables are connected or removed in the wrong order, electrical shorting may occur and damage the vehicle. The repairs would not be covered by the vehicle warranty. Always connect and remove the jumper cables in the correct order, making sure that the cables do not touch each other or other metal.
Jumper Cable Removal
A. Heavy, Unpainted Metal Engine
Part or Remote Negative (−) Terminal
B. Good Battery or Remote Positive (+) and Remote Negative (−) Terminals
C. Dead Battery or Remote
Positive (+) Terminal
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (84,1)
10-84
Vehicle Care
To disconnect the jumper cables from both vehicles do the following: 1. Disconnect the black
negative (−) cable from the vehicle that had the bad battery.
2. Disconnect the black
negative (−) cable from the vehicle with the good battery.
3. Disconnect the red positive (+) cable from the vehicle with the good battery.
4. Disconnect the red positive (+)
cable from the other vehicle.
5. Return the remote positive (+)
terminal cover, if the vehicle has one, to its original position.
Recreational Vehicle Towing If the vehicle has a hybrid engine, see the hybrid manual for more information. Recreational vehicle towing means towing the vehicle behind another vehicle – such as behind a motor home. The two most common types of recreational vehicle towing are known as dinghy towing and dolly towing. Dinghy towing is towing the vehicle with all four wheels on the ground. Dolly towing is towing the vehicle with two wheels on the ground and two wheels up on a device known as a dolly.
Towing
Towing the Vehicle Notice: Incorrectly towing a disabled vehicle may cause damage. The damage would not be covered by the vehicle warranty. Have the vehicle towed on a flatbed car carrier or a wheel lift tow truck. If a wheel lift tow truck is used, the drive wheels cannot contact the road while the vehicle is being towed. A wheel dolly must be used to lift all drive wheels off the ground. Consult your dealer or a professional towing service if the disabled vehicle must be towed. To tow the vehicle behind another vehicle for recreational purposes, such as behind a motor home, see “Recreational Vehicle Towing” in this section.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (85,1)
Vehicle Care
10-85
Two-wheel-drive vehicles and four-wheel drive vehicles with a single speed automatic transfer case should not be towed with all four wheels on the ground. Two-wheel-drive transmissions have no provisions for internal lubrication while being towed. Four-wheel drive vehicles with a single speed automatic transfer case have no neutral position and will spin the transmission when the rear wheels turn.
Here are some important things to consider before recreational vehicle towing: . What is the towing capacity of the towing vehicle? Be sure to read the tow vehicle manufacturer's recommendations.
Dinghy Towing
Two-Wheel-Drive Vehicles and Four-Wheel Drive Vehicles with a Single Speed Automatic Transfer Case
. What is the distance that will be travelled? Some vehicles have restrictions on how far and how long they can tow. Is the proper towing equipment going to be used? See your dealer or trailering professional for additional advice and equipment recommendations. Is the vehicle ready to be towed? Just as preparing the vehicle for a long trip, make sure the vehicle is prepared to be towed.
Notice: If the vehicle is towed with all four wheels on the ground, the drivetrain components could be damaged. The repairs would not be covered by the vehicle warranty. Do not tow the vehicle with all four wheels on the ground.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (86,1)
10-86
Vehicle Care
Four-Wheel Drive Vehicles with a Two Speed Automatic Transfer Case
Use the following procedure to dinghy tow a four-wheel drive vehicle with a two speed automatic transfer case: 1. Position the vehicle being towed behind the tow vehicle and shift the transmission to P (Park).
5. Release the parking brake only after the vehicle being towed is firmly attached to the towing vehicle.
6. Turn the ignition to LOCK/OFF
and remove the key — the steering wheel will still turn.
After towing, see “Shifting Out of Neutral” under Four-Wheel Drive (Single Speed Automatic Transfer Case) on page 9‑39 or Four-Wheel Drive (Two Speed Automatic Transfer Case) on page 9‑34 for the proper procedure to take the vehicle out of the Neutral position.
2. Turn the engine off and firmly set
the parking brake.
3. Securely attach the vehicle
being towed to the tow vehicle.
{ WARNING Shifting a four-wheel-drive vehicle's transfer case into N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). The driver or others could be injured. Make sure the parking brake is firmly set before the transfer case is shifted to N (Neutral).
4. Shift the transfer case to
N (Neutral). See See Four-Wheel Drive (Single Speed Automatic Transfer Case) on page 9‑39 or Four-Wheel Drive (Two Speed Automatic Transfer Case) on page 9‑34.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (87,1)
Dolly Towing – Front Towing (Front Wheels Off the Ground)
Two-Wheel-Drive Vehicles and Four-Wheel Drive Vehicles with a Single Speed Automatic Transfer Case
Notice: If a two-wheel drive vehicle or a four-wheel drive vehicle with a single speed automatic transfer case is towed with the rear wheels on the ground, the transmission could be damaged. The repairs would not be covered by the vehicle
warranty. Never tow the vehicle with the rear wheels on the ground. Two-wheel-drive vehicles and four-wheel drive vehicles with a single speed automatic transfer case should not be towed with the rear wheels on the ground. Two-wheel-drive transmissions have no provisions for internal lubrication while being towed. Four-wheel drive vehicles with a single speed automatic transfer case have no neutral position and will spin the transmission when the rear wheels turn. To dolly tow a two‐wheel‐drive vehicle or a four-wheel drive vehicle with a single speed automatic transfer case, the vehicle must be towed with the rear wheels on the dolly. See “Rear Towing (Rear Wheels Off the Ground)” later in this section for more information.
Vehicle Care
10-87
Four-Wheel Drive Vehicles with a Two Speed Automatic Transfer Case
Use the following procedure to dolly tow a four-wheel drive vehicle from the front: 1. Attach the dolly to the tow vehicle following the dolly manufacturer's instructions.
2. Drive the front wheels onto the
dolly.
3. Shift the transmission to
P (Park).
4. Firmly set the parking brake.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (88,1)
10-88
Vehicle Care
{ WARNING Shifting a four-wheel-drive vehicle's transfer case into N (Neutral) can cause the vehicle to roll even if the transmission is in P (Park). The driver or others could be injured. Make sure the parking brake is firmly set before the transfer case is shifted to N (Neutral).
5. Use an adequate clamping
device designed for towing to ensure that the front wheels are locked into the straight position.
6. Shift the transfer case to
N (Neutral). See Four-Wheel Drive (Single Speed Automatic Transfer Case) on page 9‑39 or Four-Wheel Drive (Two Speed Automatic Transfer Case) on page 9‑34.
7. Secure the vehicle to the dolly
following the manufacturer's instructions.
8. Release the parking brake only after the vehicle being towed is firmly attached to the towing vehicle.
9. Turn the ignition to LOCK/OFF. After towing, see “Shifting Out of N (Neutral)” under Four-Wheel Drive (Single Speed Automatic Transfer Case) on page 9‑39 or Four-Wheel Drive (Two Speed Automatic Transfer Case) on page 9‑34.
Rear Towing (Rear Wheels Off the Ground)
Two-Wheel-Drive Vehicles and Four-Wheel Drive Vehicles with a Single Speed Automatic Transfer Case Use the following procedure to dolly tow the vehicle from the rear: 1. Attach the dolly to the tow vehicle following the dolly manufacturer's instructions.
2. Drive the rear wheels onto the
dolly.
GMC Yukon/Yukon XL Owner Manual - 2013 - CRC 2nd edition - 8/15/12
Black plate (89,1)
3. Firmly set the parking brake.
See Parking Brake on page 9‑42.
4. Put the transmission in P (Park). 5. Secure the vehicle to the dolly
following the manufacturer's instructions.
6. Use an adequate clamping
device designed for towing to ensure that the front wheels are locked into the straight position.
7. For four-wheel drive vehicles with a single speed automatic transfer case, shift the transfer case into Two-Wheel Drive High. See Four-Wheel Drive (Single Speed Automatic Transfer Case) on page 9‑39 or Four-Wheel Drive (Two Speed Automatic Transfer Case) on page 9‑34.
8. Turn the ignition to LOCK/OFF.
Four-Wheel Drive Vehicles with a Two Speed Automatic Transfer Case Use the following procedure to dolly tow a four-wheel drive vehicle from the rear: 1. Attach the dolly to the tow vehicle following the dolly manufacturer's instructions.
2. Drive the rear wheels onto the
dolly.
3. Firmly set the parking brake.
See Parking Brake on page 9‑42.
4. Put the transmission in P (Park). 5. Secure the vehicle to the dolly
following the manufacturer's
