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1991 Chevrolet C1500 Pickup CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Chevrolet REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-95 Chevrolet & GMC C & K, G, P & R & V Series
Vehicle: 1991 Chevrolet C1500 Pickup 5.7 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
ANTI-LOCK BRAKES, GENERAL MOTORS -> Rear Wheel Anti-Lock Brake System -> DIAGNOSIS & TESTING -> DIAGNOSTIC CHARTS -> DIAGNOSTIC CIRCUIT CHECK -> READING TROUBLE CODES -> WIRING DIAGRAMS
Vehicle: 1991 Chevrolet C1500 Pickup 4.3 V6 GAS
WIRING DIAGRAMS
Refer to "Wiring Diagrams" in "Vehicle Systems."
READING TROUBLE CODES
Trouble codes are accessed by connecting a jumper wire between terminals A and H of the underdash ALDL connector and observing the flashes of the brake warning lamp. Note the following when performing the Diagnostic Circuit Check to access trouble codes.
- When the terminals are jumped, count the number of short flashes starting from the initial long flash and including the long flash in the count.
- The count sequence will repeat as long as the ALDL connector terminals are jumped with the ignition on.
- ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Component Locations -> C/K, G & R/V Series w/6.2L, 6.5L & 6.6L Diesel Engines
Vehicle: 1991 Chevrolet C1500 Pickup 6.2 V8 DIESEL
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 1991 Chevrolet C1500 Pickup 7.4 V8 GAS
Never clamp propeller shaft tubing in a vise. Clamping could dent or deform the tube causing an imbalance or unsafe condition. Always clamp on one of the yokes and support the shaft horizontally. Avoid damaging the slip yoke sealing surface. Nicks may damage the bushing or cut the lip seal.
Disassemble
- Support propeller shaft in a line horizontal with table of a press.
- Mark propeller shaft in order to show which end connects to transmission and which end goes to rear axle.
- On models equipped with external snap ring retainers, proceed as follows:
- Disassemble snap rings by ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
Starter, Replace
Vehicle: 1991 Chevrolet C1500 Pickup 5.7 V8 GAS
- Disconnect battery ground cable.
- Remove starter braces or heat shields, if equipped.
- Disconnect starter solenoid electrical connectors.
- Raise and support vehicle.
- Remove at...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
General Motors Corp./Saturn Trucks -> Check Engine Oil Level ->
Vehicle: 1991 Chevrolet C1500 Pickup 5.7 V8 GAS
This system is used to indicate a low engine oil level condition. The lamp should light during engine starting. If oil level is sufficient, the lamp should go off when engine is operating. If oil level is low the...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1991 Chevrolet C1500 Pickup 5.0 V8 GAS
Lower
- Drain cooling system into a suitable container.
- Reposition hose clamp at radiator outlet and remove hose.
- Reposition hose clamp at water pump inlet and remove hose.
- Remove hose from vehicle.
- Reverse procedure...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1991 Chevrolet C1500 Pickup 5.0 V8 GAS
- Rotate tensioner counterclockwise, using a 1/2 inch breaker bar with a socket placed on tensioner ...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
Component location diagrams for most 1991 Chevrolet C1500 Pickup cars and light trucks sold in the U.S. from 1990+.
A/C Blower Motor Diagram for 1991 Chevrolet C1500 Pickup 4.3 V6 GAS Components on diagram: |
Fog Lamp Diagram for 1991 Chevrolet C1500 Pickup 5.0 V8 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Chevrolet C1500 Pickup cars and light trucks sold in the U.S.
1991 Chevrolet C1500 Pickup 5.0 V8 GAS Wiring Diagram Components on diagram: |
1991 Chevrolet C1500 Pickup 4.3 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
OEM TSB listings for most 1991 Chevrolet C1500 Pickup cars and light trucks sold in the U.S. from 1985+.
Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1991 Chevrolet C1500 Pickup 4.3 V6 GAS Auto Systems: |
Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED Vehicle: 1991 Chevrolet C1500 Pickup 4.3 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Chevrolet C1500 Pickup AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Chevrolet C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1991 Chevrolet C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1991 Chevrolet C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1991 Chevrolet C1500 Pickup cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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