1990 GMC Medium Truck Unit Repair Manual

Used copy of Factory Softcover Manual.

This manual contains diagnostic information for Medium Duty Trucks excluding Forward/Tilmaster Models. This manual includes procedures involved in disassembly and assembly of components. For major components such as diesel engine, drive axle, and transmissions are not covered in this manual, refer to the component manufacture's service manual.

Contents:

• General Information
• Air Conditioning
• Steering
• Axles
  • Rear axle Controls
• Brakes
  • Hydraulic Brake Controls
  • Air Brake Control Units
  • Air Compressor and Governor
• Engine
  • Inline 6
  • V8
  • Model 1MEF, 2GF, 2GFS and Holley 4152E Carburetors
  • Model 295 TBI Unit
  • Electrical
  • Delco-Remy SI and CS-144 Generators
  • Leece-Neville Generators
  • Delco-Remy Starting Motors
• Transmission
  • Manual Transmission
  • SM 465
  • Transmission Shift Controls