1999 CHEVROLET S10 Owners Manual

yellowblue
6-35
Battery
Your new vehicle comes with an ACDelco Freedom

battery. 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.
CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº 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 ªTheft
-Deterrent
Featureº 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 ªReplacement
Bulbsº in the Index.
For any bulb changing procedure not listed in this
section, contact your GM dealer's service department.
Halogen Bulbs
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.

yellowblue
6-36 Headlamps
One-Piece Composite Headlamp System
1. Open the hood.
2. Remove the black retainer clips by lifting up.
3. Pull the headlamp assembly out.
4. Unplug the electrical connector.
5. Turn the bulb assembly counterclockwise to
remove it.
6. Put the new bulb assembly into the headlamp
assembly and turn it clockwise until it is tight.
7. Plug in the electrical connector.
8. Put the headlamp assembly back into the vehicle.
Install the two retaining clips.

yellowblue
6-37
Tw o-Piece Composite Headlamp System
1. Open the hood.
2. Remove the black retainer clips by lifting up.
3. Pull the headlamp lens assembly out.
4. Unplug the electrical connector.
5. Turn the bulb assembly counterclockwise to
remove it.
6. Put the new bulb assembly into the headlamp
assembly and turn it clockwise until it is tight.
7. Plug in the electrical connector.
8. Put the headlamp lens assembly back into the
vehicle. Install the two retaining clips.

yellowblue
6-38 One-Piece Front Turn Signal
Lamp Assembly
1. Remove the headlamp assembly as shown under
ªOne
-Piece Composite Headlamp Systemº earlier in
this section.
2. Twist the bulb socket
counterclockwise to
remove it from the
headlamp assembly.
3. Pull the bulb straight out to remove it from the socket.
4. Push the new bulb into the socket until it snaps
into place.
5. Put the bulb socket into the lamp assembly and twist
it clockwise until it is tight.
6. Put the headlamp assembly back into the vehicle.
Install the two retaining clips.
Two-Piece Front Turn Signal
Lamp Assembly
1. Remove the headlamp assembly as shown under
ªTwo
-Piece Composite Headlamp Systemº earlier in
this section.
2. Locate the locking tabs
on the assembly.
Squeeze the tabs
together and push that
end of the assembly out
while holding the tabs.
The assembly will
swing out.
3. Unplug the electrical connector.

yellowblue
6-39
4. Turn the harness bulb socket counterclockwise to
remove it. Pull the bulb straight out to remove it
from the socket.
5. Push the new bulb into the socket until it snaps
into place.
6. Put the socket into the lamp assembly and turn it
clockwise until it is tight.
7. To replace the assembly, snap the outboard end of
the lamp assembly back into the vehicle. Then swing
the assembly in and snap it into place.8. Replace the headlamp assembly. Install the two
retaining clips.
Center High-Mounted Stoplamp
1. Remove the lens retaining screws.
2. Remove the lens.

yellowblue
6-40
3. Remove the bulb.
4. Install a new bulb.
5. Replace the lens. Install and tighten the screws.
If equipment such as a cap or camper is installed on
your vehicle, a center high
-mounted stoplamp feed wire
is provided along the driver's side rear frame. This wire
should be used to install a center high
-mounted
stoplamp in the cap or camper.
Taillamps
1. Open the tailgate.
2. Remove the screws from
the lamp assembly near
the tailgate latch.
3. Pull the assembly away from the pickup side panel.
4. Turn the socket counterclockwise to remove it. Push
the tab in while you turn the socket.
5. Pull the bulb out.
6. Push the new bulb into the socket.
7. Put the socket into the assembly and turn the socket
clockwise until it locks in place.
8. Replace the assembly. Install and tighten the screws.
9. Close the tailgate.

yellowblue
6-41
Windshield Wiper
Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. See ªWiper Blade
Checkº in Section 7 in this manual under Part B ªOwner
Checks and Servicesº for more information.
NOTICE:
Use care when removing or installing a blade
assembly. Accidental bumping can cause the arm
to fall back and strike the windshield.
1. To remove the old wiper blades, lift the wiper arm
until it locks into a vertical position.
A. Blade Assembly
B. Arm Assembly
C. Locking Tab
D. Blade Pivot
E. Hook Slot
F. Arm Hook

yellowblue
6-42
2. Press down on the blade assembly pivot locking tab.
Pull down on the blade assembly to release it from
the wiper arm hook.
3. Remove the insert from the blade assembly. The
insert has two notches at one end that are locked by
bottom claws of the blade assembly. At the notched
end, pull the insert from the blade assembly.
4. To install the new wiper insert, slide the insert (D),
notched end last, into the end with two blade claws
(A). Slide the insert all the way through the blade
claws at the opposite end (B). The plastic caps (C)
will be forced off as the insert is fully inserted.5. Be sure that the notches are locked by the bottom
claws. Make sure that all other claws are properly
locked on both sides of the insert slots.
A. Claw in Notch
B. Correct Installation
C. Incorrect Installation