
5. Remove the bulb by turning it counterclockwise.
6. Turn the bulb clockwise to install it.
7. Reinstall the cover and reconnect the wiring
harness.
Center High-Mounted
Stoplamp (CHMSL) (Retractable
Hardtop and Coupe)
If your vehicle has this component and it needs
replacement, it is recommended that it be replaced
as a unit by your dealer/retailer.
Taillamps, Turn Signal, Sidemarker,
Stoplamps and Back-up Lamps
(Sedan)
A. Stoplamp/Taillamp/Turn Signal
B. Sidemarker Lamp
C. Back-up Lamp
To replace one of these bulbs:
1. Open the trunk. SeeTrunk on page 3-11.
2. Remove the convenience net.
3. Remove the wing nuts holding the trunk trim.
6-50

4. Remove the two nuts that hold the taillamp
assembly.
5. Remove the taillamp assembly.
6. Turn the bulb socket counterclockwise to remove.
7. Pull the bulb straight out of the socket.
8. Push the new bulb straight in until it clicks.
9. Turn the bulb socket clockwise to reinstall.
10. Reinstall the taillamp assembly and the two nuts
that hold the taillamp assembly.
11. Reinstall the wing nuts holding the trunk trim.
Taillamps, Turn Signal, Sidemarker,
Stoplamps and Back-up Lamps
(Coupe)
A. Sidemarker Lamp
B. Stoplamp/Taillamp/Turn Signal Lamp
C. Back-up Lamp
6-51

To replace one of these bulbs:
1. Open the trunk. SeeTrunk on page 3-11.
2. Remove the convenience net.
3. Remove the two wing nuts from the trunk trim and
pull back the trunk trim to expose the hex nuts.4. Remove the three hex nuts retaining the taillamp
assembly.
5. Pull the assembly off to the side to release it from
the rear of the vehicle.
6. Turn the bulb socket counterclockwise to remove
from the taillamp assembly.
7. Pull the bulb from the socket.
8. Push the new bulb into the socket until it clicks.
9. Turn the bulb socket clockwise to reinstall into the
taillamp assembly.
10. Push the taillamp assembly back into the rear of
the vehicle.
11. Reinstall the three hex nuts retaining the taillamp
assembly.
12. Reinstall the trunk trim and the two wing nuts.
6-52

Taillamps, Turn Signal, Sidemarker,
Stoplamps and Back-up Lamps
(Retractable Hardtop)
A. Sidemarker Lamp
B. Stoplamp/Taillamp/Turn Signal Lamp
C. Back-up LampTo replace one of these bulbs:
1. Open the trunk. SeeTrunk on page 3-11.
2. Locate the three rubber covers in the trunk trim,
near the taillamp assembly and remove them.
3. Remove the two nuts and one bolt retaining the
taillamp assembly.
4. Pull off the taillamp assembly to the side to release
it from the vehicle.
5. Turn the bulb socket counterclockwise to remove.
6. Pull the bulb from the bulb socket.
7. Push the new bulb straight in until it clicks.
8. Turn the bulb socket clockwise to reinstall.
9. Push the taillamp assembly back into place.
10. Reinstall the two nuts and one bolt retaining the
taillamp assembly.
11. Reinstall the trunk trim and three rubber covers.
6-53

License Plate Lamp
To replace the license plate lamp bulb:
1. Remove the license plate assembly by turning the
two screws counterclockwise.
2. Turn and pull the license plate lamp forward
through the fascia opening.
3. Turn the bulb socket counterclockwise and pull the
bulb straight out of the socket.
4. Push the new bulb in and turn it clockwise to install.
5. Replace the license plate lamp by pushing it
through the fascia opening.
6. Turn the two screws that hold the license plate
lamp clockwise to reinstall.
Replacement Bulbs
Exterior Lamp Bulb Number
Coupe and Retractable
Hardtop921
Sedan 3057K
Center High-Mounted Stoplamp
(CHMSL)912***
Front Parking and Turn Signal
Lamp (Amber Lens)3157KX
Front Parking and Turn Signal
Lamp (Crystal Lens)3157AK
Front/Rear Sidemarker Lamp 194
License Plate Lamp 168
Headlamps
High-Beam Lamp H9
Low-Beam Lamp H11
Stoplamp, Taillamp and Turn
Signal Lamp3057K*
Sidemarker, Stoplamp, Taillamp
and Turn Signal Lamp3157K**
*Coupe and Sedan only
**Retractable Hardtop only
***Sedan Only
For replacement bulbs not listed here, contact your
dealer/retailer.
6-54

Audio System.........................................4-53, 4-72
Audio Steering
Wheel Controls........................................4-82
Radio Reception..........................................4-83
Setting the Clock.........................................4-53
Theft-Deterrent Feature................................4-81
XM™ Satellite Radio Antenna System............4-84
Audio System(s).............................................4-54
Automatic Climate Control System.....................4-20
Automatic Dimming Mirror Operation..................3-34
Automatic Door Lock......................................... 3-9
Automatic Headlamp System............................4-12
Automatic Transmission
Fluid..................................................6-27, 6-28
Operation...................................................3-24
Automatic Transmission Shift Lock Control
System Check.............................................. 7-8
B
Backglass Antenna..........................................4-84
Backing Up....................................................5-31
Battery..........................................................6-42
Electric Power Management..........................4-14
Run-Down Protection...................................4-15
Battery Replacement......................................... 3-5
Belt Routing, Engine.......................................7-12
Bench Seat, Split (60/40).................................2-13Blizzard Conditions..........................................5-16
Bluetooth Controls...........................................4-72
Bluetooth
®.....................................................4-71
Brake
Emergencies................................................ 5-5
Brake Adjustment............................................6-41
Brake Fluid....................................................6-39
Brake Pedal Travel.........................................6-41
Brake Wear...................................................6-41
Brakes..........................................................6-39
Antilock....................................................... 5-4
Parking......................................................3-29
System Warning Light..................................4-30
Braking........................................................... 5-3
Braking in Emergencies..................................... 5-5
Break-In, New Vehicle.....................................3-20
Bulb Replacement...........................................6-54
Center High-Mounted Stoplamp
(CHMSL) ........................................6-49, 6-50
Fog Lamps .................................................4-12
Halogen Bulbs............................................6-47
Headlamp Aiming........................................6-47
Headlamps.................................................6-47
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................6-48
License Plate Lamps....................................6-54
Taillamps, Turn Signal, Sidemarker, Stoplamps,
and Back-Up Lamps.................6-50, 6-51, 6-53
Buying New Tires...........................................6-75
2

Flash-to-Pass................................................... 4-5
Flat Tire........................................................6-81
Flat Tire, Changing.........................................6-90
Flat Tire, Storing.............................................6-99
Fluid
Automatic Transmission........................6-27, 6-28
Power Steering...........................................6-37
Windshield Washer......................................6-38
FM Stereo.....................................................4-83
Tire Size.......................................................6-60
Fog Lamps
Bulb Replacement.......................................4-12
Folding the Seatback.......................................2-13
Following Distance..........................................5-31
Format..........................................................4-63
Fuel............................................................... 6-6
Additives...................................................... 6-8
California Fuel.............................................. 6-7
E85 (85% Ethanol)........................................ 6-9
Filling a Portable Fuel Container....................6-13
Filling the Tank...........................................6-11
Fuels in Foreign Countries............................6-11
Gage .........................................................4-38
Gasoline Octane........................................... 6-7
Gasoline Specifications.................................. 6-7
Low Fuel Warning Light................................4-39Fuel Economy
Driving for Better.........................................1-21
Fuses..........................................................6-116
Engine Compartment Fuse Block.................6-119
Instrument Panel Fuse Block.......................6-116
Rear Compartment Fuse Block....................6-122
Windshield Wiper.......................................6-115
G
Gages
Engine Coolant Temperature.........................4-33
Fuel..........................................................4-38
Speedometer..............................................4-26
Tachometer.................................................4-26
Trip Odometer.............................................4-26
Gasoline
Octane........................................................ 6-7
Specifications............................................... 6-7
Glove Box.....................................................3-37
GM Mobility Reimbursement Program.................. 8-7
7

H
Halogen Bulbs................................................6-47
Hazard Warning Flashers................................... 4-3
Head Restraints............................................... 2-2
Headlamps....................................................4-10
Aiming .......................................................6-47
Bulb Replacement.......................................6-47
Daytime Running Lamps (DRL).....................4-11
Delayed.....................................................4-11
Flash-to-Pass............................................... 4-5
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................6-48
High/Low Beam Changer................................ 4-5
On Reminder..............................................4-10
Headlamps Off in Park....................................4-11
Heated Seats................................................... 2-6
Heater...........................................................4-16
Engine Coolant...........................................3-23
Highbeam On Light.........................................4-38
High-Speed Operation, Tires.............................6-66
Highway Hypnosis...........................................5-13
Hill and Mountain Roads..................................5-14
Hitches..........................................................5-30
Hood
Checking Things Under................................6-14
Release.....................................................6-15Horn ............................................................... 4-3
How OnStar Service Works..............................1-22
How the System Alarm is Activated...................3-17
How to Add Automatic Transmission Fluid..........6-30
How to Add Coolant to the Coolant
Surge Tank.................................................6-33
How to Check................................................6-65
How to Check Automatic Transmission Fluid.......6-28
How to Check Power Steering Fluid..................6-38
How to Detect a Tamper Condition....................3-18
How to Inspect the Engine Air Cleaner/Filter.......6-26
How to Reset the Engine Oil Life System...........6-25
How to Turn Off the System Alarm....................3-17
How to Wear Safety Belts Properly
...................2-20
Hydraulic Power Steering................................... 5-8
Hydroplaning..................................................5-12
I
If a Crash Occurs...........................................8-13
If No Steam Is Coming From The Engine
Compartment..............................................6-36
If Steam Is Coming From The Engine
Compartment..............................................6-35
If the Off Indicator is Lit for an Adult-Size
Occupant...................................................2-70
8