2007 GMC SIERRA automatic transmission

Engine Specications
Engine VIN Code Transmission Spark Plug Gap
4.3L V6 X Automatic 0.060 in (1.52 mm)
4.8L V8 C Automatic 0.040 in (1.01 mm)
5.3L V8 Iron, Flexible Fuel
with Active Fuel
Management™, SFI, OHV0 Automatic 0.040 in (1.01 mm)
5.3L V8 Aluminum, Flexible
Fuel with Active Fuel
Management™, SFI3 Automatic 0.040 in (1.01 mm)
5.3L V8 Aluminum with Active
Fuel Management™M Automatic 0.040 in (1.01 mm)
5.3L V8 Iron with Active Fuel
Management™J Automatic 0.040 in (1.01 mm)
6.0L V8 K Automatic 0.040 in (1.01 mm)
6.0L V8 with Active Fuel
Management™Y Automatic 0.040 in (1.01 mm)
618

Additional Required Services (Gasoline Engine)
This maintenance section applies to vehicles with a gasoline engine. If your vehicle has a diesel engine,
see the maintenance schedule section in the DURAMAX®Diesel Engine Supplement.
The following services should be performed at the rst maintenance service (IorII) after the indicated
miles (kilometers) shown for each item.
Additional Required Services
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
Inspect fuel system for damage or
leaks.• •••••
Inspect exhaust system for loose or
damaged components.• •••••
Vehicles without a lter restriction
indicator: Replace engine air cleaner
lter. SeeEngine Air Cleaner/Filter
(Gasoline Engines) on page 505.•••
Change automatic transmission uid and
lter (severe service).See footnote (h).•••
Change automatic transmission uid and
lter (normal service).•
627

(e)Make sure the safety belt reminder light and all
your belts, buckles, latch plates, retractors, and
anchorages are working properly. Look for
any other loose or damaged safety belt system
parts. If you see anything that might keep a safety
belt system from doing its job, have it repaired.
Have any torn or frayed safety belts replaced. Also
look for any opened or broken airbag coverings,
and have them repaired or replaced. The
airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders, body door
hinges, hood latch assembly, secondary latch,
pivots, spring anchor, release pawl, tailgate hinges,
tailgate linkage, tailgate handle pivot points,
latch bolt, fuel door hinge, locks, and folding seat
hardware. More frequent lubrication may be
required when exposed to a corrosive
environment. Applying silicone grease on
weatherstrips with a clean cloth will make them
last longer, seal better, and not stick or squeak.
(g)Check vent hose at transfer case for kinks and
proper installation. Check to be sure vent hose
is unobstructed, clear, and free of debris.(h)Change automatic transmission uid and lter
if the vehicle Gross Vehicle Weight Rating
(GVWR) is over 8600 lbs or if the vehicle is mainly
driven under one or more of these conditions:
In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery
service.
(i)Drain, ush, and rell cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 513 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and ller neck. Pressure test the cooling
system and pressure cap.
(j)A uid loss in any vehicle system could indicate
a problem. Have the system inspected and
repaired and the uid level checked. Add uid if
needed.
630

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 162.
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 162.
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.
633

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 ignition 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.
634

Usage Fluid/Lubricant
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherGM Optikleen
®Washer Solvent.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Automatic
TransmissionDEXRON
®-VI Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Floor Shift
LinkageLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293, in
Canada 992723) or lubricant
meeting requirements of NLGI #2
Category LB or GC-LB.
Usage Fluid/Lubricant
Chassis
LubricationChassis Lubricant
(GM Part No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Front Axle
(1500 Series)SAE 80W-90 Axle Lubricant
(GM Part No. U.S. 1052271, in
Canada 10950849).
Front Axle
(1500 HD,
2500, 2500 HD,
and 3500
Series)SAE 75W-90 Synthetic
Axle Lubricant (GM Part
No. U.S. 12378261, in
Canada 10953455) meeting
GM Specication 9986115.
Rear AxleSAE 75W-90 Synthetic
Axle Lubricant (GM Part
No. U.S. 12378261, in Canada
10953455) meeting GM
Specication 9986115.
636

Usage Fluid/Lubricant
Transfer Case
(Four-Wheel
Drive)DEXRON
®-VI Automatic
Transmission Fluid.
Front Axle
Propshaft
Spline or
One-Piece
Propshaft
Spline
(Two-Wheel
Drive with
4-Speed Auto.
Trans.)Spline Lubricant, Special Lubricant
(GM Part No. U.S. 12345879, in
Canada 10953511) or lubricant
meeting requirements of
GM 9985830.
Rear Driveline
Center SplineChassis Lubricant (GM Part
No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Usage Fluid/Lubricant
Body Door
Hinge Pins,
Tailgate Hinge
and Linkage,
Folding Seats,
and Fuel Door
HingeMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Tailgate Handle
Pivot Points,
Hinges, Latch
Bolt, and
LinkageMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Weatherstrip
ConditioningWeatherstrip Lubricant (GM Part No.
U.S. 3634770, in Canada 10953518)
or Dielectric Silicone Grease
(GM Part No. U.S. 12345579, in
Canada 992887).
Weatherstrip
SqueaksSynthetic Grease with Teon,
Superlube (GM Part
No. U.S. 12371287, in
Canada 10953437).
637

Appearance Care (cont.)
Washing Your Vehicle.............................. 601
Weatherstrips........................................... 601
Windshield and Wiper Blades................... 603
Ashtray....................................................... 233
Audio System.............................................. 300
AM-FM Radio.......................................... 304
Audio Steering Wheel Controls................. 368
Care of Your CD and DVD Player............ 371
Care of Your CDs and DVDs................... 370
Fixed Mast Antenna................................. 371
Navigation/Radio System, see Navigation
Manual................................................. 355
Radio with CD................................306, 312
Rear Seat Audio (RSA)............................ 366
Setting the Time...................................... 301
Theft-Deterrent Feature............................ 368
Understanding Radio Reception............... 369
XM™ Satellite Radio Antenna System...... 371
Audio System(s)
Radio with CD and DVD.......................... 322
Automatic Headlamp System....................... 223
Automatic Transmission
Fluid........................................................ 508
Operation................................................. 138
Auxiliary Roof Mounted Lamp Switch.......... 225B
Battery........................................................ 531
Electric Power Management..................... 227
Run-Down Protection............................... 228
Before Leaving on a Long Trip.................... 414
Brake
Emergencies............................................ 381
Parking.................................................... 162
Brakes........................................................ 528
System Warning Light.............................. 256
Braking....................................................... 378
Braking in Emergencies............................... 381
Break-In, New Vehicle................................. 132
Bulb Replacement....................................... 543
Center High-Mounted Stoplamp (CHMSL)
and Cargo Lamp.................................. 545
Halogen Bulbs......................................... 544
Headlamps............................................... 544
License Plate Lamps................................ 548
Pickup Box Identication and Fender
Marker Lamps...................................... 546
Replacement Bulbs.................................. 549
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps..................................... 546
Buying New Tires........................................ 568
666