1998 GMC SIERRA Owners Manual

Battery
Every new vehicle has an ACDelco Freedom@ battery.
You never have to add water to one of these. When it’s
time for a new battery, we recommend an ACDelco
Freedom battery. Get one that has the replacement
number shown
on the original battery’s label.
Vehicle Storage
If you’re not going to drive your vehicle for 25 days
or more, remove the black, negative
(-) cable from
the battery. This
will help keep your battery from
running down.
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if
you
aren’t careful. See “Jump Starting” in the Index
for tips on working around
a battery without
getting hurt. Contact
your dealer to learn how
to prepare your vehicle
for longer storage periods.
Also, for your audio system. see “Theft-Deterrent
Feature”
in the Index.
Bulb Replacement
Before you replace any bulbs, be sure that all the lamps
are off and the engine isn‘t running. See “Replacement
Bulbs”
in the Index for the proper types of bulbs to use.
1 6!!, CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb.
You or
others could be injured. Be sure to read
and
follow the instructions on the bulb package.
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Headlamps
Sealed Beam Lamps
Remove the four
screws from the
headlamp retainer.
2. Pull the headlamp out and remove the retainer.
3. Unplug and remove
the headlamp.
4. Plug in the new headlamp and put it in place.
5. Install the retainer to the headlamp and tighten
the screws.
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Composite Headlamps
1. Remove the two hex head pins at the location shown.
2. Pull the headlamp lens assembly out.
3. Unplug the electrical connector.
4. Turn the bulb to the left
and remove it.
5. Put the new bulb into the lens assembly and turn it to
the right
until it is tight.
6. Plug in the electrical connector.
7. Put the headlamp lens assembly back into the
vehicle. Install and tighten the two hex head pins.
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Front Turn Signal Lamps
/c
1. Remove the two screws at the inside edge
of the
parkinghurn signal lamp assembly.
2. Remove the lamp assembly by swinging it out from
the inside edge and sliding
it out at the outside edge.
3. Squeeze the tab on the side of the lamp socket while
turning the socket to the left.
4. Pull the socket out of the
lamp assembly.
5. Push in gently on the bulb, turn it to the left and
remove
it from the socket.
6. Put the new bulb into the socket, gently press in on
the bulb and
turn it to the right until it is tight.
7. Put the socket back into the lamp assembly and turn
it to the right until it locks.
8. Put the parkinghrn signal lamp assembly back into
the vehicle and tighten the screws.
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Front Turn Signal Lamps
(Composite Headlamps)
1. Remove the four screws
and take out the
parking/turn signal
lamp assembly.
2. Squeeze the tab on the side of the lamp socket while
turning the socket
to the left.
4. Push in gently on the bulb, turn it to the left and
remove
it from the socket.
5. Put the new bulb into the socket, gently press in on
the bulb and turn it to the right until it
is tight.
6. Put the socket back into the lamp assembly and turn
it to the right until it locks.
7. Put the parkinghrn signal lamp assembly back into
the vehicle and tighten the four screws.
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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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Fender Marker Lamps (Dual Rear Wheel Pickup Models)
1. Remove the screws
and take the fender
marker assembly out
of the fender.
2. Turn the bulb socket to
the left and remove it
from
the lens assembly.
3. Pull the bulb straight out of the socket.
4. Put a new bulb into the socket and push it in until it
is tight.
5. Put the socket back into the lens assembly and turn it
to the right to tighten it.
6. Replace the lens and tighten the screws.
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Center High-Mounted Stoplamp (CHMSL)
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2. Pull the old bulb straight out of the socket.
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3. Put a new bulb into the
socket
and push it in
until it is tight.
4. Replace the lens and tighten the screws.
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