1990 GMC Light Duty Truck Unit Repair Manual

Year
1990
Make
GMC
Vehicle
C/K Trucks, G Vans, Light Duty Trucks, M Vans (Astro/Safari), P Forward Control, R/V Trucks, S/T Trucks, Trucks
Type
Overhaul & Unit Repair
Publication
X-9037
Pages
1,052

The 1990 GMC Light Duty Truck Unit Repair Manual covers bench disassembly and assembly of major components for GMC light trucks and vans, including C/K (GMT 400) and R/V trucks, S and T compact trucks, G vans, M and L vans and P models. On-vehicle service is in the companion service manual. After general information on identification, fasteners and metric conversion, it covers air-conditioning compressors, steering gears and pumps, rear and front axles, brake boosters and master cylinders, every 1990 engine from the 2.5 liter L4 to the 6.2 liter diesel, carburetors and TBI units, generators, starters and distributors, automatic and manual transmissions, and transfer cases. Each sub-section opens with its own contents list.

Section 0A · Pages 7–20 (14 pages)

General Information

Identification and shop basics: the service parts identification label, vehicle identification number, certification label, engine and transmission identification numbers and tag locations (with the Hydra-matic HM-117 tag decoded by build month and day), fastener strength markings, prevailing-torque fasteners and recommendations for reuse, and decimal and metric equivalent tables.

What this section covers

  • Service parts identification label
  • Vehicle identification number
  • Engine and transmission identification
  • Fastener strength and reuse
  • Decimal and metric equivalents
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