Once a Year
.Starter switch check. SeeOwner Checks and
Services on page 7‑11.
.Parking brake and automatic transmission P (Park)
mechanism check. See Owner Checks and
Services on page 7‑11.
.Automatic transmission shiftlock control system
check. See Owner Checks and Serviceson
page 7‑11.
.Ignition transmission lock check. See Owner
Checks and Services on page 7‑11.
.Engine cooling system and pressure cap pressure
check. Radiator and air conditioning condenser
outside cleaning. See Cooling System
on
page 6‑29.
.Exhaust system and nearby heat shields
inspection for loose or damaged components.
.Accelerator pedal check for damage, high effort,
or binding. Replace if needed.
First Engine Oil Change After Every
40 000 km/25,000 Miles
.Fuel system inspection for damage or leaks.
.Four‐wheel drive only: Transfer case fluid change
(extreme duty service) for vehicles mainly driven
off‐road in four‐wheel drive. Vehicles used for
farming, mining, forestry, Department of Natural
Resources (DNR), and snow plowing occupations
meet this definition. Check vent hose at transfer
case for kinks and proper installation. Check to be
sure vent hose is unobstructed, clear, and free of
debris. 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 fluid. Contaminated fluid will
decrease the life of the transfer case and should
be replaced.
7-6
First Engine Oil Change After Every
80 000 km/50,000 Miles
.Engine air cleaner filter replacement. SeeEngine
Air Cleaner/Filter on page 6‑21.
.Automatic transmission fluid change (severe
service) for vehicles with Gross Vehicle Weight
Rating (GVWR) over 3 901 kg (8,600 lbs) or mainly
driven in heavy city traffic in hot weather, in hilly or
mountainous terrain, when frequently towing a
trailer, or used for taxi, police, or delivery service.
See Automatic Transmission Fluid (4-Speed
Transmission)
on page 6‑23or Automatic
Transmission Fluid (6-Speed Transmission)on
page 6‑26.
.Four‐wheel drive only: Transfer case fluid change
(severe service) for vehicles mainly driven when
frequently towing a trailer, or used for taxi, police,
or delivery service. Check vent hose at transfer
case for kinks and proper installation. Check to be
sure vent hose is unobstructed, clear, and free of
debris. 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 fluid. Contaminated fluid will
decrease the life of the transfer case and should
be replaced.
.Evaporative control system inspection. 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.
An Emission Control Service. The U.S.
Environmental Protection Agency or the California
Air Resources Board has determined that the
failure to perform this maintenance item will not
nullify the emission warranty or limit recall liability
prior to the completion of the vehicle's useful life.
We, however, urge that all recommended
maintenance services be performed at the
indicated intervals and the maintenance be
recorded.
7-7
First Engine Oil Change After Every
160 000 km/100,000 Miles
.Automatic transmission fluid change (normal
service). SeeAutomatic Transmission Fluid
(4-Speed Transmission)
on page 6‑23or
Automatic Transmission Fluid (6-Speed
Transmission) on page 6‑26.
.Four‐wheel drive only: Transfer case fluid change
(normal service). Check vent hose at transfer case
for kinks and proper installation. Check to be sure
vent hose is unobstructed, clear, and free of
debris. 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 fluid. Contaminated fluid will
decrease the life of the transfer case and should
be replaced.
.Spark plug replacement and spark plug wires
inspection. An Emission Control Service.
First Engine Oil Change After Every
240 000 km/150,000 Miles
.Engine cooling system drain, flush, and refill,
cooling system and cap pressure check, and
cleaning of outside of radiator and air conditioning
condenser (or every 5 years, whichever occurs
first). SeeEngine Coolant
on page 6‑31.An
Emission Control Service.
.Engine accessory drive belt inspection for fraying,
excessive cracks, or obvious damage and
replacement, if needed. An Emission Control
Service.
7-8
Scheduled Maintenance
ServiceMaintenanceIMaintenance II
Change engine oil and filter. Reset oil life system. • •
Engine coolant level check. • •
Windshield washer fluid level check. • •
Tire inflation pressures check. • •
Tire wear inspection. • •
Rotate tires. • •
Fluids visual leak check. • •
Engine air cleaner filter inspection (vehicles driven in dusty conditions only). • •
Brake system inspection. • •
Allison Transmission
®only: External transmission filter replacement (at the first
maintenance service performed on the vehicle only).
7-9
Recommended Fluids and
Lubricants
This maintenance section applies to vehicles with a
gasoline engine. If the vehicle has a diesel engine and/
or an Allison Transmission, see the maintenance
schedule section in the DURAMAX
®Diesel manual.
Fluids and lubricants identified below by name, part
number, or specification can be obtained from your
dealer.
Usage Fluid/Lubricant
Engine Oil Engine oil which meets GM Standard
GM6094M and displays the American
Petroleum Institute Certified for
Gasoline Engines starburst symbol.
To determine the proper viscosity for
your vehicle's engine, see
Engine Oil
on page 6‑18.
Engine Coolant 50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
coolant. See
Engine Coolanton
page 6‑31.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid
(GM Part No. U.S. 12377967, in
Canada 89021320).
Windshield Washer Optikleen
®Washer Solvent.
Usage
Fluid/Lubricant
Power Steering
System GM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Automatic
Transmission DEXRON
®-VI Automatic Transmission
Fluid.
Key Lock
Cylinders Multi-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Floor Shift Linkage Lubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293, in
Canada 992723) or lubricant meeting
requirements of NLGI #2 Category LB
or GC-LB.
Chassis
Lubrication Chassis 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) ‐Four‐
Wheel Drive SAE 80W-90 Axle Lubricant
(GM Part No. U.S. 89021671, in
Canada 89021672).
Front Axle
(1500, 2500 HD, and 3500 HD
Series) SAE 75W-90 Synthetic Axle Lubricant
(GM Part No. U.S. 89021677, in
Canada 89021678).
7-13
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
If your vehicle has the DURAMAX
®diesel engine, see the DURAMAX®Diesel manual for more information.
Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter Standard Filter 15908916* A3086C*
High Capacity Filter 15908915 A3085C
Oil Filter 4.3L V6 25010792 PF47
4.8L V8; 5.3L V8; 6.0L V8; 6.2L V8 89017524 PF48
Spark Plugs 4.3L V6 12568387 41-101
4.8L V8; 5.3L V8; 6.0L V8; 6.2L V8 12621258 41-110
Wiper Blades –21.6 in (55.0 cm) 25877402 —
*15908915 (A3085C) high-capacity air cleaner filter may be substituted.
7-15
Engine (cont.)Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54
Fan Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37
Fast Idle System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Overheated Protection Operating Mode . . . . . . . . . . 6-36
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Engine Oil
Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Event Data Recorders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Extender, Safety Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
Exterior Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
F
Fast Idle System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Filter Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Finish Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-116
Fixed Mast Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-147
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-89 Flat Tire, Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-90
Flat Tire, Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-106
Fluid
Automatic Transmission . . . . . . . . . . . . . . . . . . . . 6-23, 6-26
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37
Windshield Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
Fog Lamps
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36, 6-50
Four-Wheel-Drive Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-52
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6 Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
E85 (85% Ethanol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . 6-13
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
Management, Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Fuel Economy
Driving for Better . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
i - 6
FusesCenter Instrument Panel Fuse Block . . . . . . . . . . . . .6-121
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . 6-118
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . 6-119
Underhood Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . .6-122
Windshield Wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-118
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-69
Gasoline
Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Gauges
Engine Coolant Temperature . . . . . . . . . . . . . . . . . . . . . 4-40
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
Oil Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Voltmeter Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-75
GM Mobility Reimbursement Program . . . . . . . . . . . . . . .8-7
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
Hazard Warning Flashers . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57 Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-54
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . . 4-12
Exterior Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
High/Low Beam Changer . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
On Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Pickup Box Identification and Fender MarkerLamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-59
Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18, 4-21 Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
High-Speed Operation, Tires . . . . . . . . . . . . . . . . . . . . . . 6-74
Highbeam On Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
Highway Hypnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Hood Checking Things Under . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . 2-21
i - 7