1998 GMC SIERRA headlamp

Front Sidemarker Lamps (Composite Headlamps)
1. Remove the four screws
and pull out the
parkinghrn signal
lamp assembly.
2. Reach through the opening and turn the sidemarker
bulb socket to the left and remove it.
3.
4. Put a new bulb into the socket and push it in until it
5. Put the socket back into the sidemarker assembly
is
tight.
and turn it to the right to tighten it.
6. Replace the parkinghrn signal lamp assembly and
tighten the screws.
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Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are not
needed. However,
if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset.
If you notice your vehicle
vibrating when driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted
or corroded. If wheel nuts keep corning loose, the wheel,
wheel bolts and wheel nuts should be replaced. If the
wheel leaks
air, replace it (except some aluminum
wheels, which can sometimes be repaired). See your
dealer if any
of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted the
same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new
GM original equipment
parts. This way, you will be sure to have the
right wheel, wheel bolts and wheel nuts for your vehicle.
~ Using the wrong replacement wheels, wheel bolts
or wheel nuts on your vehicle can be dangerous.
It could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control. You could have a collision in which
you or others could be injured. Always use
the correct wheel, wheel bolts and wheel nuts
for replacement.
~
NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, 'bumper
height, vehicle ground clearance and tire or tire
chain clearance to the body and chassis.
6-59
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Headlamps Fuses and Circuit Breakers
The headlamp wiring is protected by an internal circuit
breaker. An electrical overload will cause
the lamps
to go on and off, or
in some cases to remain off. If
this happens, have your headlamp wiring checked
right away.
Windshield Wipers
The windshield wiper motor is protected by a circuit
breaker and
a fuse. If the motor overheats due to heavy
snow, etc., the wiper will stop
until the motor cools. If
the overload is caused by some electrical problem and
not snow, etc., be sure to get it fixed.
Power Windows and Other Power Options
Circuit breakers protect the power windows and other
power accessories. When the current load is too heavy,
the circuit breaker opens and closes, protecting the
circuit
until the problem is fixed or goes away. The wiring circuits
in your vehicle are protected from
short circuits by
a combination of fuses, circuit breakers
and fusible thermal links.
This greatly reduces the
chance
of fires caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace
a bad fuse with a new one of the identical size
and rating.
If you ever have
a problem on the road and don’t have a
spare fuse, you can “borrow” one that has the same
amperage. Just pick some feature
of your vehicle that
you can get along without
-- like the radio or cigarette
lighter
-- and use its fuse, if it is the correct amperage.
Replace
it as soon as you can.
6-7 1
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FuseKircuit Breaker
3
4
Usage
Courtesy Lamps, Cargo Lamp,
Glove Box Lamp, Dome/Reading
Lamps, Vanity Mirrors,
Power Mirrors
Instrument Cluster, DRL Relay,
Lamp Switch, Keyless Entry,
Low Coolant Module, Illuminated Entry Module,
DRAC (Diesel Engine)
Not Used
Cruise Control
Auxiliary Power Outlet
Crank
License Lamp, Parking Lamps,
Taillamps,
Roof Marker Lamps,
Tailgate Lamps, Front
Sidemarkers, Fog Lamp Relay,
Door Switch Illumination,
Fender Lamps, Headlamp Switch Illumination
FuseKircuit
Breaker
10
11
12
13
14
15
I6
17
18
19
Usage
Air Bag System
Wiper Motor, Washer Pump
A/C,
A/C Blower,
High Blower Relay
Power
Amp, Cigarette Lighter,
Door Lock Relay,
Power Lumbar Seat
4WD Indicator, Cluster, Comfort
Controls, Instrument Switches,
Radio Illumination,
Chime Module
DRL Relay,
Fog Lamp Relay
Front and Rear Turn Signals,
Back-up Lamps, BTSl Solenoid
Radio (Ignition)
4WAL/VCM, ABS. Cruise Control
Radio (Batterv)
6-73
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STARTER RELAY
[-I
[-I
[T)
I BLOWER
n STOPiHAZ
Name
ECM-B RR DEFOG
IGN-E
FUEL
SOL
GLOW PLUG
Usage
Horn, Underhood Lamps
Auxiliary Fan
Injectors, PCM/VCM
Not Used
Air Conditioning
Not Used
Ignition Switch, EGR, Canister
Purge, EVRV Idle Coast Solenoid,
Heated
02, Fuel Heater
(Diesel Engine), Water Sensor
(Diesel Engine)
HTD ST-RR Not Used
LIGHTING Headlamp and Panel Dimmer
BATT Battery, Fuse Block Busbar
IGN-A Ignition Switch
IGN-B Ignition Switch Switch,
Fog and Courtesy Fuses
ABS Anti-Lock Brake Module
BLOWER High Blower Relay
STOP/HAZ Stoplamps
HEATED SEATS Not Used
6-75
Usage
Fuel Pump, PCM/VCM
Rear Window Defogger
Auxiliary Fan Relay Coi
il, AIC
Compressor Relay, Hot Fuel
Module, Dual Tanks
Fuel Solenoid (Diesel Engine)
Glow Plugs (Diesel Engine)
Name
HORN
AUX FAN
ECM- 1
HTD ST-FR
AIC HTD MIR
ENG-
1
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Replacen- - --:
Exterior Lamps
.-
Quantity Number
H6054
Interior Lamps Quantity Number
21 1-2
21 1-2
194
Sealed
Beam Headlamps
Composite Low-Beam
Headlamps
Composite High-Beam
Headlamps
Front Marker Lamp
Front Parking and
Turn Lamp
Rear Parking Lamp
Rear Stop and
Turn Lamp
Back-up Lamp
Fender Marker Lamp
Roof Marker Lamp
License Plate Lamp
Center High-Mounted
Stoplamp
Underhood Lamp
Pickup
Box
Identification Lamp
2 Dome Lamps
Reading Lamps Door Courtesy Lamps
Four-Wheel-Drive
Indicator**
Four-Wheel-Drive Shift Lever4:
:P
Instrument Panel
Compartment Lamp
2 9006
2
2 9005
194 1 194
1 194
4
2
2357NA
3057 194
194
74
Ashtray Lamp
Sunshade Vmity Mirror
3057
3156 I94
194
194
'@ Peterson Manufacturing
*'k Manual Transfer Case
4
1
92 1
93
3
6-76
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Tachometer .................................. 2-63
Voltmeter
................................... 2-67
Garage Door Opener
............................ 2-5 1
GAWR ....................................... 4-43
Gear Positions. Automatic Transmission
............. 2- 15
Gear Positions. Manual Transmission .......... 2- I8 . 2- 19
GloveBox .................................... 2-51
Gross Axle Weight Rating ........................ 4-43
Gross Vehicle Weight Rating
...................... 4-43
Guide en Franpis
11
GVWR ....................................... 4-43
.. .................................
Halogen Bulbs ................................ 6-39
Hazard Warning Flashers
.......................... 5-2
Head Restraints ................................. 1-5
Headlamps .................................... 2-41
Bulb Replacement
....................... 6-40. 6.4 I
High/Low Beam Changer ...................... 2-36
On Reminder
................................ 2-42
Wiring
..................................... 6-71
Heating
........................................ 3-5
High-Beam Headlamps
.......................... 2-36
Hill and Mountain Roads
......................... 4-34
Hitches. Trailer
................................. 4-55
Hood
Checking Things Under ......................... 6-9
Release
..................................... 6-10
Horn ......................................... 2-34
Hydraulic Clutch Fluid
...................... 6-25 . 7-46
Hydraulic Clutch System Check
................... 7-41
Hydroplaning
.................................. 4-30
Hearing Ilnpaired
. Customer Assistance .............. 8-4
Highway Hypnosis
.............................. 4-33 Ignition
Positions
..............................
Brakesystem ................................ 7-45
Drive Axle
.................................. 7-45
Engine Cooling System
........................ 7-44
Exhaust
Systems ............................. 7-44
Steering
.................................... 7-44
Suspension
.................................. 7-44
Throttle Linkage
.............................. 7-44
Transfer Case (Four-Wheel Drive)
............... 7-45
Instrument Panel
............................... 2-60
Cleaning
.................................... 6-64
Cluster
..................................... 2-62
FuseBlock
.................................. 6-72
Intensity Control
............................. 2-43
Interior Lamps
................................. 2-43
.................................... J ack. Tire 5-25
Jump Starting
................................... 5-3
Key Lock Cylinders Service
..................... 7-41
Key Release Button
............................. 2-12
Keyless Entry System ............................ 2-6
Keys
.......................................... 2-2
9-5
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Windshield Washet- Fluid
..........
Fluid Level Check
Windshield WiDers
.
............................. 2-37 Winter Drivins ................................. 4-36
................... 2-37.6-33. 7-47 Wiper Blades. Cleaning .......................... 6-65
............................ 7-40 Wiring Headlamp .............................. 6-71
............................. 2-36 Wrench, Wheel ................................. 5-25 L Blade
Replacement ...................... 6-50.6-78
Cleaning
the Blades ........................... 6-65
Fuses ...................................... 6-71
9-12
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