Page 631 of 680

(k)Inspect system. Check all fuel and vapor lines
and hoses for proper hook-up, routing, and
condition. Check that the purge valve, if the vehicle
has one, works properly. Replace as needed.
(l)Extreme Duty Service: Change transfer case
uid if the vehicle is mainly driven off-road in
four-wheel drive, or is used for heavy trailer towing.
Farming, mining, forestry, and Department of
Natural Resources (DNR) vehicles meet this
de nition.
(m)During any maintenance, if a power washer is
used to clean mud and dirt from the underbody,
care should be taken to not directly spray the
transfer case output seals. High pressure water can
overcome the seals and contaminate the transfer
case uid. Contaminated uid will decrease the life
of the transfer case and should be replaced.
(n)Vehicles with diesel engine or with GVWR
above 10,000 lbs (4 536 kg) only: Inspect shields
for damage or looseness. Adjust or replace as
required. This is a Noise Emission Control Service.
Applicable to vehicles sold in the United States
and recommended for vehicles sold in Canada.
(p)If you drive regularly under dusty conditions,
inspect the lter or change indicator (if equipped)
at each engine oil change.(q)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
Owner Checks and Services
These owner checks and services should be
performed at the intervals speci ed to help ensure
the safety, dependability, and emission control
performance of your vehicle. Your GM
Goodwrench
®dealer can assist you with these
checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 635.
At the First 100, 1,000 and
6,000 Miles (160, 1 600 and
10 000 km)
Check dual wheel nut torque. For proper torque,
seeCapacities and Speci cations on page 616.
631
Page 637 of 680

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 Te on,
Superlube (GM Part
No. U.S. 12371287, in
Canada 10953437).
637
Page 670 of 680

Event Data Recorders (EDR)...................... 656
Exit Lighting................................................ 226
Extender, Safety Belt..................................... 44
Exterior Lamps............................................ 221
F
Filter
Engine Air Cleaner................................... 505
Finish Damage............................................ 605
Fixed Mast Antenna.................................... 371
Flashers, Hazard Warning........................... 211
Flash-to-Pass.............................................. 214
Flat Tire...................................................... 576
Flat Tire, Changing...................................... 576
Flat Tire, Storing......................................... 592
Fluid
Automatic Transmission............................ 508
Power Steering........................................ 526
Windshield Washer.................................. 527
Fog Lamp
Fog .......................................................... 224
Fog Lamp Light........................................... 265
Four-Wheel Drive...............................147, 539
Four-Wheel-Drive Light................................ 265
Front Axle................................................... 541Fuel............................................................ 488
Additives.................................................. 490
California Fuel.......................................... 489
E85 (85% Ethanol)................................... 491
Filling a Portable Fuel Container.............. 495
Filling Your Tank...................................... 493
Fuels in Foreign Countries....................... 492
Gage....................................................... 266
Gasoline Octane...................................... 489
Gasoline Speci cations............................ 489
Low Warning Light................................... 267
Fuses
Center Instrument Panel Fuse Block........ 611
Fuses and Circuit Breakers...................... 608
Instrument Panel Fuse Block................... 609
Underhood Fuse Block............................. 612
Windshield Wiper..................................... 608
G
Gage
Engine Coolant Temperature.................... 258
Fuel......................................................... 266
Oil Pressure............................................. 263
Speedometer........................................... 248
670
Page 672 of 680

K
Keyless Entry System................................. 110
Keys........................................................... 109
L
Labeling, Tire Sidewall................................. 551
Lamps
Auxiliary Roof Mounted Lamp.................. 225
Cargo...................................................... 227
Dome....................................................... 226
Dome Lamp Override............................... 226
Exterior.................................................... 221
Puddle..................................................... 224
Reading................................................... 226
LATCH System
Child Restraints......................................... 58
Latches, Seatback......................................... 19
License Plate Lamps................................... 548
Light
Airbag Off................................................ 250
Airbag Readiness..................................... 250
Anti-Lock Brake System Warning............. 257
Brake System Warning............................. 256
Charging System..................................... 254Light (cont.)
Cruise Control.......................................... 265
Fog Lamp................................................ 265
Four-Wheel-Drive..................................... 265
Highbeam On.......................................... 265
Low Fuel Warning.................................... 267
Malfunction Indicator................................ 260
Oil Pressure............................................. 264
Passenger Airbag Status Indicator............ 252
Passenger Safety Belt Reminder.............. 249
Safety Belt Reminder............................... 249
Security................................................... 264
StabiliTrak
®Indicator................................ 258
Tire Pressure........................................... 259
Tow/Haul Mode........................................ 266
Lighting
Entry........................................................ 226
Exit.......................................................... 226
Loading Your Vehicle................................... 425
Locking Rear Axle....................................... 381
Lockout Protection....................................... 120
Locks
Delayed Locking...................................... 119
Door........................................................ 118
Lockout Protection................................... 120
672