
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 128.
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 128.
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.
413

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.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 flush
any corrosive materials from the underbody.
Take care to clean thoroughly any areas where
mud and other debris can collect.
414

Recommended Fluids
and Lubricants
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.
Fluids and lubricants identified below by name,
part number, or specification can be obtained
from your dealer/retailer.
Usage Fluid/Lubricant
Engine OilEngine 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, seeEngine Oil (Gasoline
Engine) on page 303.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant
on page 312.
Usage Fluid/Lubricant
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake fluid.
Windshield
WasherGM Optikleen
®Washer Solvent.
Parking Brake
Cable GuidesChassis Lubricant
(GM Part No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
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).
415

Audio System.............................................. 187
AM-FM Radio.......................................... 190
Care of Your Cassette Tape Player.......... 224
Care of Your CD Player........................... 226
Care of Your CDs.................................... 225
Chime Level Adjustment........................... 226
Fixed Mast Antenna................................. 226
Radio with Cassette and CD.................... 198
Radio with CD......................................... 193
Radio with Six-Disc CD............................ 211
Setting the Time with Radio Data
Systems (RDS)..................................... 189
Setting the Time without Radio Data
Systems (RDS)..................................... 189
Theft-Deterrent Feature............................ 223
Understanding Radio Reception............... 224
Automatic Transmission
Fluid........................................................ 309
Operation................................................. 125
B
Battery........................................................ 329
Run-Down Protection............................... 158
Before Leaving on a Long Trip.................... 252Brake
Emergencies............................................ 235
Parking.................................................... 128
Brakes........................................................ 325
System Warning Light.............................. 175
Braking....................................................... 232
Braking in Emergencies............................... 235
Break-In, New Vehicle................................. 119
Bulb Replacement....................................... 340
Center High-Mounted Stoplamp
(CHMSL).............................................. 342
Front Turn Signal, Sidemarker and
Parking Lamps..................................... 342
Halogen Bulbs......................................... 340
Headlamps............................................... 340
Replacement Bulbs.................................. 344
Taillamps.................................................. 343
Buying New Tires........................................ 358
C
Calibration................................................... 134
California Fuel............................................. 293
California Proposition 65 Warning................ 291
Canadian Owners........................................... 3
446

Parking
Brake....................................................... 128
Over Things That Burn............................ 131
Passenger Airbag Status Indicator............... 172
Passenger Sensing System........................... 89
Passing....................................................... 241
Passlock
®.................................................... 118
Power
Door Locks.............................................. 109
Reduced Engine Light.............................. 184
Retained Accessory (RAP)....................... 121
Seat.......................................................... 10
Steering Fluid.......................................... 323
Windows.................................................. 116
Pretensioners, Safety Belt............................. 40
Privacy........................................................ 441
Event Data Recorders.............................. 442
Navigation System................................... 443
OnStar..................................................... 443
Radio Frequency Identification.................. 443
Q
Questions and Answers About Safety Belts ... 21
R
Radiator Pressure Cap................................ 315
Radio Frequency Identification (RFID),
Privacy..................................................... 443
Radios........................................................ 187
AM-FM Radio.......................................... 190
Care of Your Cassette Tape Player.......... 224
Care of Your CD Player........................... 226
Care of Your CDs.................................... 225
Radio with Cassette and CD.................... 198
Radio with CD......................................... 193
Radio with Six-Disc CD............................ 211
Setting the Time with Radio Data
Systems (RDS)..................................... 189
Setting the Time without Radio Data
Systems (RDS)..................................... 189
Theft-Deterrent......................................... 223
Understanding Reception ......................... 224
Reading Lamps........................................... 158
Rear Air Conditioning and Heating
System.................................................... 164
Rear Axle.................................................... 337
Locking.................................................... 235
Rear Door Security Locks........................... 110
Rear Doors................................................. 114
Rear Heating System.................................. 163
454