1999 CHEVROLET S10 four wheel drive

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6-66
Name Usage
B/U LP Back
-Up Lamps
A/C Air Conditioning
W/W PMP Not Used
HORN Horn
IGN B Column Feed, IGN 2, 3, 4
RAP Retained Accessory Power
LD LEV Not Used
OXYSEN Oxygen Sensor
IGN E Engine
MIR/LKS Mirrors, Door Locks
FOG LP Fog Lamps
IGN A Starting and Charging IGN 1
STUD #2 Accessory Feeds, Electric Brake
PARKLP Parking Lamps
LR PRK Left Rear Parking LampsName Usage
IGN C Starter Solenoid, Fuel Pump,
PRNDL
HTDSEAT Not Used
HVAC HVAC System
TRCHMSL Not Used
RRDFOG Not Used
TBC Truck Body Computer
CRANK Clutch Switch, NSBU Switch
HAZLP Hazard Lamps
VECHMSL Vehicle Center High
-Mounted
Stoplamp
HTDMIR Heated Outside Mirrors
ATC Transfer Case (Four
-Wheel Drive)
STOPLP Stoplamps
RR W/W Not Used

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7-4
Part A: Scheduled
Maintenance Services
Using Your Maintenance Schedule
We at General Motors want to help you keep your vehicle
in good working condition. But we don't know exactly
how you'll drive it. You may drive very short distances
only a few times a week. Or you may drive long distances
all the time in very hot, dusty weather. You may use your
vehicle in making deliveries. Or you may drive it to work,
to do errands or in many other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may need more
frequent checks and replacements. So please read the
following and note how you drive. If you have any
questions on how to keep your vehicle in good
condition, see your dealer.
This part tells you the maintenance services you should
have done and when you should schedule them. If you
go to your dealer for your service needs, you'll know
that GM
-trained and supported service people will
perform the work using genuine GM parts.The proper fluids and lubricants to use are listed in
Part D. Make sure whoever services your vehicle uses
these. All parts should be replaced and all necessary
repairs done before you or anyone else drives
the vehicle.
These schedules are for vehicles that:

carry passengers and cargo within recommended
limits. You will find these limits on your vehicle's
Certification/Tire label. See ªLoading Your Vehicleº
in the Index.

are driven on reasonable road surfaces within legal
driving limits.

are driven off
-road in the recommended manner. See
ªOff
-Road Driving With Your Four-Wheel-Drive
Vehicleº in the Index.

use the recommended fuel. See ªFuelº in the Index.
Selecting the Right Schedule
First you'll need to decide which of the two schedules is
right for your vehicle. Here's how to decide which
schedule to follow:

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7-47 Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator and
cruise control cables.
Drive Axle Service
Check rear/front axle fluid level and add as needed.
Check constant velocity joints and axle seals for leaking.
Transfer Case (Four-Wheel Drive)
Inspection
Every 12 months or at oil change intervals, check front
axle and transfer case and add lubricant when necessary.
Check vent hose at transfer case for kinks and proper
installation. More frequent lubrication may be required
on off
-road use.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook
-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Also inspect drum brake linings
for wear and cracks. Inspect other brake parts, including
drums, wheel cylinders, calipers, parking brake, etc.
Check parking brake adjustment. You may need to have
your brakes inspected more often if your driving habits
or conditions result in frequent braking.

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9-4
Exhaust, Engine 2-31, 4-39 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exit Lighting 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Express-Down Window 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . .
Extender, Safety Belt 1-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fabric Cleaning 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fifth Gear, Manual Transmission 2-22 . . . . . . . . . . . . . . . . . . .
Filling a Portable Fuel Container 6-7 . . . . . . . . . . . . . . . . . . . .
Filling Your Tank 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter
Air 6
-16, 6-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Oil 6-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finish Care 6-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finish Damage 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Gear
Automatic Transmission 2
-21 . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . .
Flashers, Hazard Warning 5-2 . . . . . . . . . . . . . . . . . . . . . . . . .
Flash-To-Pass Feature 2-36 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flat Tire, Changing 5-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluids and Lubricants 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Lamp Switch 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign Countries, Fuel 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Gear, Manual Transmission 2-22 . . . . . . . . . . . . . . . . .
Four-Wheel Drive 2-23, 6-23 . . . . . . . . . . . . . . . . . . . . . . . . .
French Language Manual ii. . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Axle 6
-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Map Lamps 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Storage Area 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel 6-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filling a Portable Container 6-7 . . . . . . . . . . . . . . . . . . . . . .
Filling Your Tank 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Foreign Countries 6
-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gage 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Tank Capacity 6-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block
Engine Compartment 6
-64 . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 6-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses and Circuit Breakers 6-62 . . . . . . . . . . . . . . . . . . . . . . .
Gages
Engine Coolant Temperature 2-61 . . . . . . . . . . . . . . . . . . . .
Engine Oil Pressure 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltmeter 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Cap 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAWR 4-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Positions 2-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glove Box 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GM Mobility for Persons with Disabilities 8-5 . . . . . . . . . . . .
Gross Axle Weight Rating 4-41 . . . . . . . . . . . . . . . . . . . . . . . .
Gross Vehicle Weight Rating 4-40 . . . . . . . . . . . . . . . . . . . . . .
Guide en Fran†ais ii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GVWR 4
-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Halogen Bulbs 6-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hazard Warning Flashers 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlamp Replacement 6-36 . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlamps 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High/Low Beam Changer 2-36 . . . . . . . . . . . . . . . . . . . . . .
Wiring 6-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlamps On Reminder 2-42 . . . . . . . . . . . . . . . . . . . . . . . . .

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9-7
Night Vision 4-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Maintenance Replacement Parts 6-70 . . . . . . . . . . . . .
Odometer 2-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Road Driving 4-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Road Driving with Your Four-Wheel-Drive Vehicle 4-14
Off-Road Recovery 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil, Engine 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Service and Owner Publications 8-12, 8-13 . . . . . . .
Outside Mirror
Convex 2
-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heated 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Adjust 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Remote Control 2-45 . . . . . . . . . . . . . . . . . . . . . . . . .
Overheating Engine 5-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7-42 . . . . . . . . . . . . . . . . . . . . . . .
Owner Publications, Ordering 8-12, 8-13 . . . . . . . . . . . . . . . .
Paint Spotting, Chemical 6-58 . . . . . . . . . . . . . . . . . . . . . . . .
Park
Automatic Transmission 2
-18 . . . . . . . . . . . . . . . . . . . . . . .
Shifting Into 2-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting Out of 2-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking
At Night 2
-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Mechanism Check 7-45 . . . . . . . . . . . . . . . . . . . . . . .
Lots 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Hills with a Trailer 4-53 . . . . . . . . . . . . . . . . . . . . . . . . .
Over Things That Burn 2-30 . . . . . . . . . . . . . . . . . . . . . . . .
With a Trailer 4-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Your Vehicle, Manual Transmission 2-30 . . . . . . . . . . . . . .
Parts, Replacement 6-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Passing 4
-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passlock
2-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payload 4-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-46 . . . . . . . . . . . . . . . . . .
Pickup Conversion to Chassis Cab 4-45 . . . . . . . . . . . . . . . . .
Power
Accessory Outlets 2
-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option Fuses 6-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 2-45 . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Fluid 6-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pregnancy, Use of Safety Belts 1-19 . . . . . . . . . . . . . . . . . . . .
Problems on the Road 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Publications, Service and Owner 8-12, 8-13 . . . . . . . . . . . . . .
Radiator 5-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Pressure Cap 6-25 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio Reception 3-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radios
AM
-FM Stereo 3-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Care 3-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Player 3-8, 3-11 . . . . . . . . . . . . . . . . . . . . . .
Compact Disc Player 3-15 . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Disc Player Care 3-25 . . . . . . . . . . . . . . . . . . . . . .
Remote Cassette Tape Player 3-19 . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Feature 3-21 . . . . . . . . . . . . . . . . . . . . . . . .
Rain, Driving 4-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RAP 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear
Axle 6
-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Passengers 1-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .