1999 CHEVROLET SUBURBAN power steering

yellowblue
6-28
CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
With the coolant recovery tank, you will almost
never have to add coolant at the radiator.
Never turn the radiator pressure cap
-- even a
little
-- when the engine and radiator are hot.
Add coolant mixture at the recovery tank, but be careful
not to spill it.
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
Power Steering Fluid
When to Check Power Steering Fluid
It is not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system or
you hear an unusual noise. A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.

yellowblue
6-29 How To Check Power Steering Fluid
When the engine compartment is cool, wipe the cap and
the top of the reservoir clean, then unscrew the cap and
wipe the dipstick with a clean rag. Replace the cap and
completely tighten it. Then remove the cap again and
look at the fluid level on the dipstick.
The level should be at the FULL COLD mark. If
necessary, add only enough fluid to bring the level up to
the mark.
What to Use
To determine what kind of fluid to use, see
ªRecommended Fluids and Lubricantsº in the Index.
Always use the proper fluid. Failure to use the proper
fluid can cause leaks and damage hoses and seals.
Windshield Washer Fluid
What to Use
When you need windshield washer fluid, be sure to read
the manufacturer's instructions before use. If you will be
operating your vehicle in an area where the temperature
may fall below freezing, use a fluid that has sufficient
protection against freezing.
Adding Washer Fluid
Open the cap labeled WASHER FLUID ONLY. Add
washer fluid until the tank is full.

yellowblue
6-63
Fuse/Circuit
BreakerUsage
14 4WD Indicator, Cluster, Front and
Rear Comfort Controls (If Equipped),
Instrument Switches, Radio
Illumination, Chime Module
15 DRL Relay, Fog Lamp Relay
16 Front and Rear Turn Signals,
Back
-Up Lamps, BTSI Solenoid
17 Radio (Ignition)
18 4WAL/VCM, ABS, Cruise Control
19 Radio (Battery)
20 PRNDL, Automatic Transmission,
Speedometer, Check Gages,
Warning Lights
21 Security/Steering
22 Not Used
23 Rear Wiper, Rear Washer Pump
24 Front Axle, 4WD Indicator Lamp,
TP2 Relay (Gasoline Engine)
A Power Door Lock, Six
-Way Power
Seat, Keyless Entry Module
B Power WindowsUnderhood Fuse/Relay Center
The underhood fuse/relay center is located in the rear of
the engine compartment near the brake fluid reservoir.
Move the retainer clips for the cover to access the
fuse block.
You can remove fuses with a fuse extractor. The fuse
extractor is mounted to the interior fuse block. To
remove fuses if you don't have a fuse extractor, hold the
end of the fuse between your thumb and index finger
and pull straight out.

yellowblue
7-42
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 and Suspension 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.
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.

yellowblue
7-44
Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name, part
number or specification may be obtained from your dealer.
USAGE
FLUID/LUBRICANT
Engine Oil
(Gasoline
Engine)Engine Oil with the American
Petroleum Institute Certified For
Gasoline Engines ªStarburstº
symbol of the proper viscosity. To
determine the preferred viscosity
for your vehicle's engine, see
ªEngine Oilº in the Index.
Engine Coolant50/50 mixture of clean, drinkable
water and use only GM
Goodwrench

DEX-COOL
or
Havoline
DEX-COOL
Coolant.
See ªEngine Coolantº in the Index.
Hydraulic Brake
SystemDelco Supreme 11
Brake Fluid
(GM Part No. 12377967 or
equivalent DOT
-3 Brake Fluid).
Windshield
Washer SolventGM Optikleen
Washer Solvent
(GM Part No. 1051515)
or equivalent.
USAGEFLUID/LUBRICANT
Parking Brake
Cable GuidesChassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.
Power Steering
SystemGM Power Steering Fluid (GM
Part No. 1052884
- 1 pint,
1050017
- 1 quart, or equivalent).
Automatic
TransmissionDEXRON
-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant,
Superlube
(GM Part
No. 12346241 or equivalent).
Chassis
LubricationChassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.
Front Wheel
BearingsWheel Bearing Lubricant meeting
requirements of NLGI # 2,
Category GC or GC
-LB (GM Part
No. 1051344 or equivalent).

yellowblue
9-8
Passing 4-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passlock
2-11, 2-80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-42 . . . . . . . . . . . . . . . . . .
Power
Auxiliary Outlet 2
-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Locks 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lumbar Adjustment 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option Fuses 6-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 2-52 . . . . . . . . . . . . . . . . . . . . . . . .
Seat 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Fluid 6-28, 7-44 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winches 4-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Lumbar Adjustment 1-3 . . . . . . . . . . . . . . . . . . . . . . . .
Pregnancy, Use of Safety Belts 1-28 . . . . . . . . . . . . . . . . . . . .
Problems on the Road 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protecting Exterior Bright Metal Parts 6-56 . . . . . . . . . . . . . . .
Publications, Service and Owner 8-11, 8-12 . . . . . . . . . . . . . .
Radiator 5-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Pressure Cap 6-24 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio Reception 3-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radios 3-11, 3-12, 3-15, 3-19 . . . . . . . . . . . . . . . . . . . . . . . .
Rain, Driving In 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Lamps 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear
Axle 6
-22, 7-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Child Security Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lamp Bulb Replacement 6-41 . . . . . . . . . . . . . . . . . . . . . . .
Outside Seat Position 1-38 . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Belt Comfort Guides 1
-41 . . . . . . . . . . . . . . . . . . . . .
Seat Passengers 1-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window Defogger 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Wiper and Washer 2-36 . . . . . . . . . . . . . . . . . . .
Rear Air Conditioning and Heating Systems 3-4 . . . . . . . . . . .
Rear Towing 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rearview Mirror 2-43, 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrochromic Day/Night with Compass 2-43 . . . . . . . . . .
Electrochromic Day/Night with Compass/Temperature
Display 2
-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside 2-43, 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reclining Front Seatbacks 1-4 . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Hooks 5-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Tank, Coolant 5-13 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle Towing 4-42 . . . . . . . . . . . . . . . . . . . . . .
Refrigerants, Air Conditioning 6-68 . . . . . . . . . . . . . . . . . . . .
Removing the Rear (Third) Seat (Suburban) 1-12 . . . . . . . . . .
Replacement
Bulbs 6
-65, 6-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 6-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel, Used 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Safety Belts 1-63 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Rear (Third) Seat (Suburban) 1-13 . . . . . . . . . .
Reporting Safety Defects 8-10 . . . . . . . . . . . . . . . . . . . . . . . . .
Restraints
Checking 1
-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Child 1-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head 1-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Parts After a Crash 1-63 . . . . . . . . . . . . . . . . . . .
System Check 7-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse, Automatic Transmission 2-17 . . . . . . . . . . . . . . . . . .

yellowblue
9-10
Service and Appearance Care 6-1 . . . . . . . . . . . . . . . . . . . . . .
Service and Owner Publications 8-11, 8-12 . . . . . . . . . . . . . .
Service Four-Wheel Drive Warning Light 2-80 . . . . . . . . . . . .
Service Publications 8-11, 8-12 . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Your Air Bag-Equipped Vehicle 1-35 . . . . . . . . . . .
Sheet Metal Damage 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lever 2-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting
Automatic Transmission 2
-16 . . . . . . . . . . . . . . . . . . . . . . .
Into Park (P) 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Out of Park (P) 2-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shoulder Belt Height Adjuster 1-22, 1-40 . . . . . . . . . . . . . . . .
Signaling Turns 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Skidding 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sound Equipment, Adding 3-27 . . . . . . . . . . . . . . . . . . . . . . . .
Specifications and Capacities 6-67 . . . . . . . . . . . . . . . . . . . . . .
Specifications, Engine 6-67 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speech Impaired, Customer Assistance 8-4 . . . . . . . . . . . . . . .
Speedometer 2-71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speed-Sensitive Steering 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . .
Stains, Cleaning 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Switch Check 7-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steam 5-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Emergencies 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speed-Sensitive 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tips 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel, Tilt 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step-Bumper Pad 4-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Compartments 2-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage, Overhead 2
-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage, Vehicle 6-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stuck: In Sand, Mud, Ice or Snow 5-36 . . . . . . . . . . . . . . . . . .
Sun Visors 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sunglasses Storage 2-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols, Vehicle v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer 2-71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate 2-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate, Glass Release 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player Care 3-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Feature 3-24 . . . . . . . . . . . . . . . . . . . . . . . . . .
THEFTLOCK
3-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat 6-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Gear, Automatic Transmission 2-18 . . . . . . . . . . . . . . . .
Tilt Steering Wheel 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time, Setting the 3-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire Chains 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire Loading 4-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information Label 4-44 . . . . . . . . . . . . . . . . . . .
Tires 6-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance 6-48 . . . . . . . . . . . . . . . . . . . . . . . .
Buying New 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat 5-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation 6-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation Check 7-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Rotation 6-44 . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .