2007 GMC YUKON XL parking brake

At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the
vehicle moves, you or others could be
injured.
1. Before you start, be sure you have enough
room around the vehicle.
2. Firmly apply both the parking brake and the
regular brake. SeeParking Brake on
page 151.
Do not use the accelerator pedal, and be ready
to turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The
vehicle should start only in PARK (P) or
NEUTRAL (N). If the vehicle starts in any other
position, contact your GM Goodwrench
®dealer
for service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the
vehicle moves, you or others could be
injured.
1. Before you start, be sure you have enough
room around the vehicle. It should be parked
on a level surface.
2. Firmly apply the parking brake. SeeParking
Brake on page 151.
Be ready to apply the regular brake
immediately if the vehicle begins to move.
3. With the engine off, turn the ignition to RUN,
but do not start the engine. Without applying
the regular brake, try to move the shift
lever out of PARK (P) with normal effort. If the
shift lever moves out of PARK (P), contact
your GM Goodwrench
®dealer for service.
562

Ignition Transmission Lock Check
While parked, and with the parking brake set, try
to turn the ignition to LOCK in each shift lever
position.
The ignition should turn to LOCK only when
the shift lever is in PARK (P).
The key should come out only in LOCK.
Contact your GM Goodwrench
®dealer if service is
required.
Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your
vehicle could begin to move. You or
others could be injured and property
could be damaged. Make sure there is
room in front of your vehicle in case it
begins to roll. Be ready to apply the
regular brake at once should the vehicle
begin to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular
brake, set the parking brake.
To check the parking brake’s holding ability:
With the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure
from the regular brake pedal. Do this until the
vehicle is held by the parking brake only.
To check the PARK (P) mechanism’s holding
ability: With the engine running, shift to
PARK (P). Then release the parking brake
followed by the regular brake.
Contact your GM Goodwrench
®dealer if service is
required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take
care to clean thoroughly any areas where mud and
other debris can collect.
563

Appearance Care (cont.)
Vehicle Care/Appearance Materials........... 537
Washing Your Vehicle............................... 532
Weatherstrips............................................ 531
Windshield, Backglass, and Wiper Blades.... 534
Ashtray(s)..................................................... 209
Audio System(s)........................................... 274
Audio Steering Wheel Controls................. 334
Care of Your CD and DVD Player............. 337
Care of Your CDs and DVDs.................... 336
Navigation/Radio System,
see Navigation Manual.......................... 321
Radio with CD.......................................... 278
Radio with CD and DVD........................... 295
Rear Seat Audio (RSA)............................. 332
Rear Side Window Antenna...................... 337
Setting the Time................................276, 277
Theft-Deterrent Feature............................. 334
Understanding Radio Reception................ 335
XM™ Satellite Radio Antenna System....... 337
Automatic Headlamp System........................ 201
Automatic Transmission
Fluid......................................................... 445
Operation.................................................. 142
Autoride
®..................................................... 405
Auxiliary Roof Mounted Lamp Switch........... 203
B
Battery......................................................... 466
Run-Down Protection................................ 204
Before Leaving on a Long Trip..................... 380
Bench Seat, Split (60/40)............................... 20
Brake
Anti-Lock Brake System (ABS).................. 345
Emergencies............................................. 347
Parking..................................................... 151
System Warning Light............................... 232
Brake Pedal, Throttle.................................... 140
Brakes......................................................... 463
Braking........................................................ 344
Braking in Emergencies................................ 347
Break-In, New Vehicle.................................. 136
Bucket Seats, Rear........................................ 26
Bulb Replacement........................................ 478
Halogen Bulbs.......................................... 478
Headlamp Aiming...................................... 475
License Plate Lamps................................. 480
Replacement Bulbs................................... 481
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps..................................... 478
Buying New Tires......................................... 500
594

Oil
Engine...................................................... 438
Pressure Gage.......................................... 239
Pressure Light.......................................... 240
Oil, Engine Oil Life System.......................... 441
Older Children, Restraints.............................. 61
Online Owner Center................................... 574
OnStar
®System, see OnStar®Manual......... 167
Other Warning Devices................................ 188
Outlet Adjustment......................................... 220
Outlet(s), Accessory Power........................... 208
Outside
Automatic Dimming Mirror......................... 166
Convex Mirror........................................... 166
Curb View Assist Mirrors........................... 166
Heated Mirrors.......................................... 167
Manual Mirrors.......................................... 163
Power Foldaway Mirrors............................ 165
Power Mirrors........................................... 164
Trailer-Tow Mirrors.................................... 163
Overheated Engine Protection
Operating Mode........................................ 454
Owner Checks and Services........................ 560
Owners, Canadian........................................... 3
P
Paint, Damage............................................. 536
Park Aid....................................................... 205
Park (P)
Shifting Into.............................................. 152
Shifting Out of.......................................... 154
Parking
Assist....................................................... 205
Brake........................................................ 151
Over Things That Burn............................. 154
Passenger Airbag Status Indicator................ 228
Passenger Sensing System.......................... 100
Passing........................................................ 353
PASS-Key
®III+............................................ 134
PASS-Key®III+ Operation............................ 134
Power
Accessory Outlet(s)................................... 208
Door Locks............................................... 121
Electrical System...................................... 539
Liftgate..................................................... 125
Lumbar Controls......................................... 11
Retained Accessory (RAP)........................ 138
Running Boards........................................ 129
Seat........................................................... 10
602