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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Chevrolet R3500 Pickup car and truck
repair procedures including Chevrolet engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 1991 Chevrolet R3500 Pickup automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1991 Chevrolet R3500 Pickup
- 1991 Chevrolet R3500 Pickup 6.2 V8 DIESEL, CID:379, Fuel Injection, Aspiration:379, Engine VIN:, Desg:J
- 1991 Chevrolet R3500 Pickup 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
- 1991 Chevrolet R3500 Pickup 7.4 V8 GAS, CID:454, Fuel Injection, Aspiration:454, Engine VIN:, Desg:N
BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet R3500 Pickup AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet R3500 Pickup cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> TROUBLESHOOTING
Vehicle: 1991 Chevrolet R3500 Pickup 6.2 V8 DIESEL
Refer to Figs. throug...
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BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet R3500 Pickup AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet R3500 Pickup cars and light trucks from 1990+.
DRUM BRAKES, GENERAL MOTORS -> Drum Brake Service -> Removal -> 1990-91 C & K SERIES w/NON-SERVO BRAKES -> EXCEPT TRACKER & 1990-91 C & K SERIES w/NON-SERVO BRAKES -> TRACKER
Vehicle: 1991 Chevrolet R3500 Pickup 5.7 V8 GAS
EXCEPT TRACKER & 1990-91 C & K SERIES w/NON-SERVO BRAKES
- Raise and support vehicle, then remove tire and wheel assembly.
- Remove brake drum. If brake lining is dragging on brake drum, back off brake adjustment by rotating adjustment screw. Refer to individual truck chapter for procedure. If brake drum is rusted or corroded to axle flange and cannot be removed, lightly tap flange to drum mounting surface with a suitable hammer.
- Using brake spring pliers or equivalent, unhook primary and secondary return springs, Figs. through . Observe location of brake parts being removed to aid during ins...
CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet R3500 Pickup BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet R3500 Pickup AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet R3500 Pickup cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> General Service -> CHECKING COMPLAINTS
Vehicle: 1991 Chevrolet R3500 Pickup 5.7 V8 GAS
Diagnose power brakes systems as if two separate systems exist. Check for faults in the regular brake system first. If no problem exists in the regular brake system, diagnosis the power brake circuit is necessary. For a quick check of proper power unit operation, press the brake pedal firmly and then start the engine. The pedal should fall away slightly and less pressure should be needed to maintain the pedal in any position. On vacuum suspended power units, air will rush into the air intake when the brakes are applied.
To perform another check, remove the stop light switch, ...
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BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet R3500 Pickup AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet R3500 Pickup cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> Delco-Moraine Brake Boosters -> POWER BRAKE UNIT, Replace -> 1990-91 C & K SERIES -> ASTRO & SAFARI VAN -> CABALLERO & EL CAMINO -> FULL SIZE EXCEPT 1990-91 C & K SERIES -> LUMINA APV, SILHOUTTE & TRANS SPORT -> S/T 10 & 15 & BRAVADA
Vehicle: 1991 Chevrolet R3500 Pickup 7.4 V8 GAS
CABALLERO & EL CAMINO
- Remove vacuum hose from check valve and master cylinder retaining nuts.
- Pull master cylinder forward so it clears mounting studs and move to one side. Support cylinder to avoid stress on hydraulic lines.
- Remove power unit to dash nuts.
- Remove brake pedal pushrod retainer and disconnect pushrod from pin.
- Remove power brake unit from vehicle.
- Reverse procedure to install.
ASTRO & SAFARI VAN
- Disconnect master cylinder from power brake unit.
- Disconnect power brake unit pushrod from brake pedal.
- Remove power brake unit retaining nuts and the power brake unit.
- Rev...
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BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet R3500 Pickup AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet R3500 Pickup cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> Tracker Brake Booster -> IN-VEHICLE SERVICE -> BOOSTER PISTON ROD ADJUSTMENT
Vehicle: 1991 Chevrolet R3500 Pickup 6.2 V8 DIESEL
BOOSTER PISTON ROD ADJUSTMENT
- Pump brake pedal several times, then remove master cylinder from brake booster.
- With gasket installed on master cylinder, install booster piston rod gauge tool No. J34873-A or equivalent on master...
CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet R3500 Pickup BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet R3500 Pickup AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet R3500 Pickup cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> DIAGNOSIS & TESTING -> CLEARING CODES -> DIAGNOSTIC CIRCUIT CHECK -> DIAGNOSTIC TESTS -> READING CODES -> WIRING DIAGRAMS
Vehicle: 1991 Chevrolet R3500 Pickup 7.4 V8 GAS
WIRING DIAGRAMS
Refer to "Wiring Diagrams" in "Vehicle Systems."
DIAGNOSTIC CIRCUIT CHECK
Refer to Figs. and for diagnostic circuit checks.
READING CODES
Trouble codes may be read with the TECH 1 scanner or by jumping terminal "H " of the ALDL to terminal "A" of the ALDL while observing the flashing of the "Anti-Lock" warning lamp. The terminals must be jumped for a few seconds before the code will begin.""
DIAGNOSTIC TESTS
[[table data]]CLEARING CODES
If the "Anti-Lock" warning lamp stays lit, the codes may be cleared with the TECH 1 scanner or by the following procedu...
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