1993 GMC SIERRA Owners Manual

Other Maintenance Items
Front Suspension and Steering Linkage
Your maintenance schedule will tell you how often to lubricate the fittings. See
“Recommended Fluids and Lubricants’’ in the Index for the proper lubricant to
use.
Front Wheel Bearings
Your vehicle has front wheel bearings that must be cleaned and repa\
cked.
Your maintenance schedule will tell you how often this must be done.
Front Shock Absorbers
The front shock absorbers of your vehicle do many things. They help the
vehicle ride smoothly and also control the travel
of the suspension system.
When the shock absorbers are serviced, any replacement shock absorber\
s
must be the same as the original equipment shock absorbers in both
extended length and strength.
1 NOTICE
If you use shock absomers that are nor me same as the original shock
I absorbers, the shock absorbers or suspension system could be da\
maged.
Wheel Nut Torque
For vehicles with dual wheels, when the vehicle, wheel or fast\
eners are new,
have the torque set at the first
100, 1,000 and 6,000 miles (160, 1600 and
9600 km). Use the torque specified in the appropriate Specification \
Chart later
in this section.
Single Belt Accessory Drive
If your new vehicle uses a serpentine belt, it is lighter, and more durable
than systems with several belts.
The belt runs over or around the pulleys
on the engine. A tensioner is used
to keep the belt tight at all times. The tensioner also makes replacing the
belt easier.
If you need to replace the belt, be sure to get the correct
replacement belt. Your dealership
or parts supplier can help you with this.
The Accessory Drive Belt Routing label on your vehicle will sh\
ow you how to
route the belt your vehicle uses.
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Service & Appearance Care
Windshield Wiper Blade Inserts
I -
r
PO232
To replace the windshield wiper blade insert, lift the wiper arm and rotate the
blade until it is facing away from the windshield. Unlatch the\
end of the insert
from the holding clips. Remove the insert and slide a new one\
in place.
Make sure the blade is secured in the clips.
Air Conditioning
Every now and then have your dealership check your air conditi\
oning system
to be sure it has not lost any cooling ability.
If you think the system is not
working properly, have your dealership check it out as soon as\
possible.
The air conditioning will not work when the temperature is bel\
ow 40°F
(4°C).
Fluid Leak Check
After the vehicle has been parked for a while, inspect the su\
rface under the
vehicle
for water, oil, fuel or other fluids. Water dripping from the air
conditioning system after it has been used is normal, If you notice fuel leaks
or fumes, the causes should be found and corrected at once.
Lubrication
Accelerator Control System
Your maintenance schedule will tell you how often the accelerator linkage
pivot points must be lubricated. See “Recommended Fluids and \
Lubricants” in
the Index for the proper lubricant to use.
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Accelerator cables and cruise control cables should not be lubr\
icated. Any
cables that are worn or are hard to pull should be replaced. \
Remove external deposits from injector pump face cam on 6.2L d\
iesel
engines, when the engine is cold.
Hood Latches and Hood Hinge
Your maintenance schedule will tell you how often to lubricate the \
hood latch
and hood hinge assembly. See “Recommended Fluids and Lubrican\
ts” in the
Index for the proper lubricant to use.
Propeller Shaft Slip Splines
See your maintenance. schedule to find out how often the slip \
splines must
be lubricated. See “Recommended Fluids and Lubricants” in \
the Index for the
proper lubricant to use.
Constant Velocity Joints
See your maintenance schedule to find out how often the consta\
nt velocity
joints must be lubricated. See “Recommended Fluids and .Lubri\
cants” in the
Index for the proper lubricant to use.
80dy
Normal use of your vehicle will cause metal to metal wear at some points on
the cab and body
if they are not lubricated.
For exposed surfaces, such as door checks, door lock bolts, lo\
ck striker
plates, dovetail bumper wedges, etc., a thin film of engine oil should be
applied.
The seat adjusters and seat track should be lubricated with chassis grease.
Door weather strips and rubber hood bumpers should be lightly coated with a
rubber lubricant.
Never use too much of any lubricant and be sure to wipe up any extra
lubricant when you are finished.
Your maintenance schedule
will tell you how often to lubricate these Ilems.
See “Recommended Fluids and Lubricants” in the Index for \
the proper
lubricant to use.
Lock Cylinders
To be sure your locks operate properly, they must be lubricated. \
Your vehicle’s
maintenance schedule
will tell you how often to lubricate them. See
“Recommended Fluids and Lubricants” in the Index for the proper lubricant to
use.
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Service & Appearance Care
You should not use penetrating oils because they could wash out the factory
installed lubricant and cause the lock to bind. De-icers which contain alcohol
could also wash away the lubricant,
so be sure to lubricate the lock after
using a de-icer of this type.
Tailgate Handle
The tailgate handle pivot points on your vehicle should be lub\
ricated to keep
it working smoothly.
Your maintenance schedule will tell you how often to lubricate the handle.
See “Recommended Fluids and Lubricants” in the Index for the proper
lubricant to use.
Electrical System
Battery
Every new GM vehicle has a Delco Freedom@ battery. You never have to
add water to one of these. When it’s time for a new battery, we recomme\
nd
a Delco Freedom@ battery. Get one that has the catalog number \
shown on
the original battery’s label.
Vehicle Storage
If you’re not going to drive your vehicle for 25 days or more, take off the
black, negative
(-) cable from the battery. This will help keep your battery
from running down.
I - Batteries have acid that can burn you and gas that can explod\
e. You I
1 can be badly hurt if you aren’t careful. See “Jump Starting” in the
Index for tips on working around a battery without getting hur\
t.
Contact your dealer to learn how to prepare your vehicle for longer periods.
Bulb Replacement
Before you replace any bulbs, be sure that all the lights are off and the
engine isn’t running.
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Sealed Beam Headlights
t i
1. Remove the four screws from the headlight retainer.
2. Pull the headlight out and remove the retainer.
3. Unplug and remove old headlight.
4. Plug in the new headlight and put it in place.
5. Install the retainer to the headlight.
6. Install the screws.
Halogen Bulbs
Halogen bulbs have pressurized gas inside and can burst if you drop
or scratch the bulb. You or others could be injured. Take special care
when handling and disposing of halogen bulbs.
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Avoid touching the bulb or letting it come in contact with anything damp
Oil from your skin or moisture on the bulb can cause the bulb to explode
when
it is turned on. If either comes in contact with the bulb, clean it with
alcohol or
a suitable degreaser and wipe the bulb dry.
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Service & Appearance Care
Composite Headlights
A
1
I
PO234
1. Remove the two screws at the top of the radiator support.
2. Pull the composite headlight lens out.
3. Unplug the electrical connector.
4. Turn the bulb counterclockwise and remove it. ,
5. Put the new bulb in and turn it clockwise until it is tight.
6. Plug in the electrical connector.
7. Put the headlight back into the vehicle and tighten the two screws.
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Front Parkinflurn Signal Lights
K2681
1. Remove the screws and take out the parking/turn signal light assembly.\

K2682
2. Squeeze the tab on the side of the light socket while turning the socket
counterclockwise.
3. Pull out the socket.
4. Push in gently on the bulb, turn it counterclockwise and remove it from
the socket.
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Service & Amearance Care
5. Put the new bulb into the socket, gently press in on the bulb and turn it
clockwise until it is tight.
6. Put the socket back into the light assembly and turn it clockwise \
until it
locks.
7. Put the parkinghurn signal light assembly back into the vehicle\
and
tighten the screws.
Side Marker Bulb
II K2683
1. Remove the screws and pull out the parkinghurn signal light as\
sembly.
2. Reach through the opening and turn the side marker bulb socket
counterclockwise and remove it.
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 side marker assembly and turn it clockwise
to tighten it.
6. Replace the parkinghurn signal light assembly and tighten the s\
crews.
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