Do you have a question about the GMC C Series 1993 and is the answer not in the manual?
Information on ordering special service tools for various applications.
Details on the label providing vehicle identification and production options.
Explanation of the VIN, its location, and what it identifies.
Overview of the HR6-HE compressor and clutch assembly design.
Procedures for minor repairs that can be done without discharging the system.
Procedures for major repairs requiring refrigerant recovery and system recharging.
Overview of the Sanden SD-510 HD compressor, its drive system, and identification.
Procedures for minor repairs to the SD-510 HD compressor.
Procedures for major repairs, including shaft seal replacement.
Overview of the complete steering gear assembly for medium-duty trucks.
Step-by-step instructions for taking apart the steering gear unit.
Step-by-step instructions for putting the steering gear unit back together.
Overview of the complete power steering pump assembly.
Procedures for servicing the drive shaft, seal, and ball bearing.
Instructions for removing, installing, and servicing the control valve.
Overview of the Midland BB Series power steering pump.
General procedures for disassembling the Midland power steering pump.
General procedures for assembling the Midland power steering pump.
Overview of the TRW Ross integral hydraulic power steering gear.
Step-by-step process for disassembling the TRW Ross steering gear.
Step-by-step process for assembling the TRW Ross steering gear.
Overview of the LuK LF 93 series power steering pump.
Procedures for disassembling the LuK LF 93 power steering pump.
Procedures for assembling the LuK LF 93 power steering pump.
Description of the electric shift unit for two-speed axles.
Description of the air shift unit for two-speed axles.
Description of the Bendix tandem master cylinder and its systems.
Procedures for repairing the master cylinder unit.
Procedure for bleeding the master cylinder on a workbench before installation.
Description of the Delco Moraine Hy-Power brake booster.
Procedures for removing and disassembling the hydraulic booster assembly.
Information about the electro-hydraulic pump used as a backup.
Information on air dryers, including the CR Brakemaster.
Procedures for removing, installing, and testing the Bendix AD-9 air brake valve.
Procedures for the Bendix E-6 dual application valve.
Procedures for the Rockwell automatic slack adjuster.
Procedures for Anchorlok standard service brake chambers.
Procedures for Anchorlok Gold Seal spring brake chambers.
Steps for disassembling the Bendix Tu-Flo 550 air compressor.
Procedures for cleaning, inspecting, and repairing the Tu-Flo 550 compressor.
Steps for disassembling the Bendix BX-2150 air compressor.
Procedures for cleaning, inspecting, and repairing the BX-2150 compressor.
Procedures related to the governor unit.
General description of the V8 engines, displacements, and basic components.
Initial steps and tools required for engine disassembly.
Methods and precautions for cleaning engine components.
Steps for removing the cylinder heads from the engine block.
Procedures for removing pistons and connecting rods from the engine.
Steps for removing the crankshaft from the engine block.
Procedures for cleaning, inspecting, and repairing engine components like the block.
Inspection and replacement procedures for camshaft bearings.
Steps for removing the timing chain and camshaft sprockets.
Procedures for installing pistons and connecting rods into the cylinder bores.
Steps for installing the cylinder heads onto the engine block.
Procedures for installing valve train components like lifters and rocker arms.
Description of the fuel control system and TBI unit components.
Procedures for disassembling the throttle body assembly.
Procedures for removing and disassembling the fuel meter body.
Procedures for removing, installing, and inspecting the pressure regulator.
Procedures for removing, installing, and inspecting the governor throttle drive assembly.
General description of the Delco Remy 21-SI 200 generator.
Procedure for testing the generator's output.
Steps for disassembling the 21-SI 200 generator.
Procedures for inspecting and repairing generator components.
Electrical tests for rotor, stator, rectifier bridge, and regulator.
Description of the Delco Remy CS-144 generator.
Explanation of how the CS-144 generator operates and its voltage regulation.
Procedure for testing the generator's output.
Steps for disassembling the CS-144 generator.
General description of Delco Remy SD-260 and SD-300 starter motors.
Tests to perform on starter motors before disassembly.
Steps for disassembling the SD-300 starter motor.
Steps for disassembling the SD-260 starter motor.
Procedures for inspecting, testing, and repairing starter motor components.
Description of the Delco Remy 37-MT starter motors.
Instructions for adjusting the drive housing.
Diagnostic procedures for starter motor issues.
How to check the thermostat for overcrank protection.
General steps for disassembling 37-MT starter motors.
General information about Delco Remy distributors.
Description and function of the ignition control module.
Description of the pole piece and coil assembly.
Steps for disassembling the distributor.
Procedures for inspecting distributor components and performing electrical tests.
Steps for reassembling the distributor.