Page 269 of 356
Headlamp aiming is done with the vehicle low beam
lamps. The high beam lamps will be correctly aimed if
the low beam lamps are aimed properly.
The headlamp aiming
devices are under the
hood near the headlamps.
If you believe your headlamps need vertical (up/down)
adjustment, follow the vertical aiming procedure.
Adjustment screws can be turned with an E8 Torx
ž
socket or T15 Torx screwdriver.
Headlamp Vertical Aiming
Notice:Horizontal aiming must be performed
before making any adjustments to the vertical aim.
Adjusting the vertical aim ®rst will result in an
incorrect headlamp aim.
1. Find the aim dot on the lens of the low beam
lamps.
2. Measure the distance from the ground to the aim
dot on each low beam lamp. Record this distance.
3. At the wall or other ¯at surface, measure from the
ground upward the recorded distance from Step 2
and draw or tape a horizontal line the width of
the vehicle.
5-47
Page 270 of 356
Notice:Do not cover a headlamp to improve beam
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp.
4. Turn on the low-beam headlamps and place a
piece of cardboard or equivalent in front of the
headlamp not being aimed. This should allow only
the beam of light from the headlamp being
aimed to be seen on the ¯at surface.5. Turn the vertical aiming screw until the headlamp
beam is aimed to the horizontal tape line. The top
edge of the cut-off should be positioned at the
bottom edge of the horizontal tape line.
5-48
Page 311 of 356
Fuses Usage
5 Stop/Back-Up Lamps
6 Oxygen Sensor
7 Battery 5
8 Parking Lamps
9 Electronic Throttle Control
10 Fuel Pump
11Engine Control Module,
Transmission Control Module
12 Odd Injectors
13 Magnetic Ride Control
14 Emission Controls
15 Air Conditioning Compressor
16 Even Injectors
17 Windshield Washer
18 Headlamp Washer
19 Right Low Beam Headlamp
20 Not Used
21 Left Low Beam Headlamp
22 Fog LampFuses Usage
23 Right High Beam Headlamp
24 Left High Beam Headlamp
25 Not Used
26 Battery 3
27 Anti-Lock Brakes
28 Climate Controls
29 Battery 2
30 Starter
31 Audio Ampli®er
32 Cooling Fan
33 Battery 1
48 Spare
49 Spare
50 Spare
51 Spare
52 Spare
53 Not Used
54 Fuse Puller
5-89
Page 312 of 356
Relays Usage
34 Horn
35 Air Conditioning Compressor
36 Windshield Washer
37 Parking Lamps
38 Fog Lamps
39 High Beam Headlamps
40 Rear Window DefoggerRelays Usage
41 Windshield Wiper High/Low
42 Wiper RUN/ACCESSORY Power
43 Starter/Crank
44 Ignition 1
45 Windshield Wiper On/Off
46 Headlamp Washer
47 Low Beam Headlamps
5-90
Page 348 of 356

Gasoline
Octane........................................................ 5-5
Speci®cations............................................... 5-5
Gate Operator and Canadian Programming........2-39
Glove Box.....................................................2-41
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Headlamp
Aiming.......................................................5-46
Vertical Aiming............................................5-47
Headlamp High/Low-Beam Changer.................... 3-6
Headlamps
Bulb Replacement.......................................5-49
Headlamps on Reminder................................... 3-6
Head-Up Display (HUD)...................................3-27
Heated Seats................................................... 1-3
Highway Hypnosis...........................................4-26
Hill and Mountain Roads..................................4-26
HomeLink
žTransmitter....................................2-37
HomeLinkžTransmitter, Programming................2-37
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-5How the System Works...................................3-31
How to Add Coolant to the Coolant
Surge Tank.................................................5-28
How to Check........................................5-19, 5-58
How to Check Lubricant...................................5-45
How to Check Power Steering Fluid..................5-33
How to Remove and Replace the Floor Mats......2-42
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly..................... 1-9
Hydroplaning..................................................4-21
I
If No Steam Is Coming From Your Engine..........5-25
If Steam Is Coming From Your Engine...............5-24
If the Light Is Flashing.....................................3-49
If the Light Is On Steady.................................3-50
If You Are Caught in a Blizzard.........................4-30
If You Are Stuck in Sand, Mud, Ice or Snow.......4-31
Ignition Positions.............................................2-19
Infants and Young Children, Restraints...............1-20
In¯ation - Tire Pressure...................................5-57
Instrument Panel
Cluster.......................................................3-40
Overview..................................................... 3-2
Instrument Panel Brightness.............................3-25
Instrument Panel Fuse Block............................5-85
Interior Lamps................................................3-25
6