1999 CHEVROLET S10 maintenance

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7-42
Part B: Owner Checks and Services
Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your vehicle,
make sure they are the proper ones, as shown in Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if necessary.
See ªEngine Oilº in the Index for further details.
Engine Coolant Level Check
Check the engine coolant level and add DEX
-COOL

coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the windshield
washer tank and add the proper fluid if necessary. See
ªWindshield Washer Fluidº in the Index for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
See ªTiresº in the Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the
Index for further details.
At Least Twice a Year
Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages are
working properly. Look for any other loose or damaged
safety belt system parts. If you see anything that might
keep a safety belt system from doing its job, have it
repaired. Have any torn or frayed safety belts replaced.
Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag system
does not need regular maintenance.)

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7-46
Part C: Periodic
Maintenance Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall). You should let your dealer's
service department or other qualified service center do
these jobs. Make sure any necessary repairs are
completed at once.
Proper procedures to perform these services may be
found in a service manual. See ªService and Owner
Publicationsº in the Index.
Steering, Suspension and Front Drive
Axle Boot and Seal Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook
-up, binding, leaks,
cracks, chafing, etc. Clean and then inspect the drive
axle boot seals for damage, tears or leakage. Replace
seals if necessary.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out
-of-position parts as well as open seams,
holes, loose connections or other conditions which could
cause a heat build
-up in the floor pan or could let
exhaust fumes into the vehicle. See ªEngine Exhaustº
in the Index.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they are
cracked, swollen or deteriorated. Inspect all pipes, fittings
and clamps; replace as needed. Clean the outside of the
radiator and air conditioning condenser. To help ensure
proper operation, a pressure test of the cooling system and
pressure cap is recommended at least once a year.

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7-51
Part E: Maintenance Record
After the scheduled services are performed, record the
date, odometer reading and who performed the service
in the boxes provided after the maintenance interval.
Any additional information from ªOwner Checks andServicesº or ªPeriodic Maintenanceº can be added on
the following record pages. Also, you should retain all
maintenance receipts. Your owner information portfolio
is a convenient place to store them.
Maintenance Record
DATEODOMETER
READINGSERVICED BYMAINTENANCE PERFORMED

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7-52
Maintenance Record
DATEODOMETER
READINGSERVICED BYMAINTENANCE PERFORMED

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8-12
CURRENT PUBLICATIONS FOR 1999 CHEVROLET
SERVICE MANUALS
Service Manuals have the diagnosis and repair information
on engines, transmission, axle, suspension, brakes,
electrical, steering, body, etc.
RETAIL SELL PRICE: $90.00
TRANSMISSION, TRANSAXLE, TRANSFER CASE
UNIT REPAIR MANUAL
This manual provides information on unit repair service
procedures, adjustments and specifications for the
1999 GM transmissions, transaxles and transfer cases.
RETAIL SELL PRICE: $50.00
SERVICE BULLETINS
Service Bulletins give technical service information needed
to knowledgeably service General Motors cars and trucks.
Each bulletin contains instructions to assist in the
diagnosis and service of your vehicle.OWNER'S INFORMATION
Owner publications are written directly for Owners and
intended to provide basic operational information about the
vehicle. The owner's manual will include the Maintenance
Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner's Manual and
Warranty Booklet.
RETAIL SELL PRICE: $20.00
Without Portfolio: Owner's Manual only.
RETAIL SELL PRICE: $15.00
CURRENT & PAST MODEL ORDER FORMS
Service Publications are available for current and past
model GM vehicles. To request an order form, please
specify year and model name of the vehicle.
PLEASE COMPLETE THE ORDER FORM SHOWN ON
THE FOLLOWING PAGE AND MAIL TO:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207OR ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM ± 6:00 PM Eastern Time
For Credit Card Orders Only (VISA±MasterCard±Discover)
1999 CHEVROLET SERVICE PUBLICATIONS ORDERING INFORMATION
The following publications covering the operation and servicing of your vehicle can be purchased by filling out
the Service Publication Order Form in this book and mailing it in with your check, money order,
or credit card information to Helm, Incorporated (address below.)

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9-6
Lights
Air Bag Off 1-28, 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Bag Readiness 1-22, 2-56 . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning 2-60, 4-7 . . . . . . . . . . . .
Brake System Warning 2-60 . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System 2-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Gages 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt Reminder 1-7, 2-55 . . . . . . . . . . . . . . . . . . . . . .
Security Warning 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 4WD 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Engine Soon 2-61 . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift 2-23, 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading, Truck-Camper 4-43 . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle 4-40 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle Off-Road Driving 4-14 . . . . . . . . . . . .
Locking Rear Axle 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lockout Prevention 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locks
Door 2
-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Transmission Check 7-45 . . . . . . . . . . . . . . . . . . . .
Key Lock Cylinder Service 7-43 . . . . . . . . . . . . . . . . . . . . .
Power Door 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Control 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel Light 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants and Fluids 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication Service
Body 7
-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate 7-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lumbar Controls 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Record 7-51 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Schedule 7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long Trip/Highway 7-6, 7-29 . . . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7-42 . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-46 . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7-48 . . . . . . . . . . . . .
Scheduled Maintenance Services 7-4 . . . . . . . . . . . . . . . . . .
Short Trip/City 7-5, 7-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance, Underbody 6-58 . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance When Trailer Towing 4-54 . . . . . . . . . . . . . . . . .
Malfunction Indicator Lamp 2-61 . . . . . . . . . . . . . . . . . . . . . .
Manual Front Seat 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Lumbar Support 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission
Check 7
-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-20, 7-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Methanol 6-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirrors 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convex Outside 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illuminated Visor Vanity 2-49 . . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night Rearview 2-45 . . . . . . . . . . . . . . . . . . . . .
Power Remote Control 2-45 . . . . . . . . . . . . . . . . . . . . . . . . .
Visor Vanity 2-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model Reference vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mountain Roads 4
-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multifunction Lever 2-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Neutral
Automatic Transmission 2-20 . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission 2-22 . . . . . . . . . . . . . . . . . . . . . . . . . .
New Vehicle ªBreak-Inº 2-12 . . . . . . . . . . . . . . . . . . . . . . . . .

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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-8
Rearview Mirror 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reclining Front Seatbacks 1-3 . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Hooks 5-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Tank, Coolant 5-13, 6-26 . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle Towing 4-39 . . . . . . . . . . . . . . . . . . . . . .
Replacement Bulbs 6-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement Parts 6-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement, Wheel 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reporting Safety Defects 8-10 . . . . . . . . . . . . . . . . . . . . . . . . .
Restraints
Check 7
-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking 1-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Child 1-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Parts After a Crash 1-52 . . . . . . . . . . . . . . . . . . .
Retained Accessory Power 2-15 . . . . . . . . . . . . . . . . . . . . . . . .
Reverse
Automatic Transmission 2
-19 . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission 2-22 . . . . . . . . . . . . . . . . . . . . . . . . . .
Right Front Passenger Position 1-20 . . . . . . . . . . . . . . . . . . . .
Roadside Assistance 8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian 8-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rocking Your Vehicle 5-33 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotation, Tires 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belts 1-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adults 1-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Care 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Passenger Position 1-31 . . . . . . . . . . . . . . . . . . . . . .
Children 1-34, 1-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver Position 1-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Extender 1-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Wear Properly 1-12 . . . . . . . . . . . . . . . . . . . . . . . . .
Label 1-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lap Belt 1
-31, 1-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lap-Shoulder 1-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Questions and Answers 1-11 . . . . . . . . . . . . . . . . . . . . . . . .
Rear Seat Passengers 1-33 . . . . . . . . . . . . . . . . . . . . . . . . . .
Reminder Light 1-7, 2-55 . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing After a Crash 1-52 . . . . . . . . . . . . . . . . . . . . . . . .
Right Front Passenger Position 1-20 . . . . . . . . . . . . . . . . . .
Use During Pregnancy 1-19 . . . . . . . . . . . . . . . . . . . . . . . . .
Why They Work 1-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Chains 4-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Defects, Reporting 8-10 . . . . . . . . . . . . . . . . . . . . . . . .
Safety Warnings and Symbols iii. . . . . . . . . . . . . . . . . . . . . . .
Scheduled Maintenance Services 7
-4 . . . . . . . . . . . . . . . . . . . .
Seatback
Latches 1
-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reclining Front 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seats 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seats and Restraint Systems 1-1 . . . . . . . . . . . . . . . . . . . . . . . .
Second Gear
Automatic Transmission 2
-20 . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission 2-22 . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Warning Light 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 4WD Light 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service and Appearance Care 6-1 . . . . . . . . . . . . . . . . . . . . . .
Service Engine Soon Light 2-61 . . . . . . . . . . . . . . . . . . . . . . .
Service Parts Identification Label 6-60 . . . . . . . . . . . . . . . . . .
Service Publications 8-12, 8-13 . . . . . . . . . . . . . . . . . . . . . . . .
Service Work, Doing Your Own 6-2 . . . . . . . . . . . . . . . . . . . .
Sheet Metal Damage 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Light 2-23, 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting 2-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Into Park 2-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Out of Park 2-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Access Panel 2-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .