1986 GMC Astro Service and Repair Manual
This factory service and repair manual for the 1986 GMC Astro spans six designations, four body configurations and three named diesel engines. The trucks are high tilt and low tilt tractors and straight trucks; the engines are the turbocharged 14.0L inline-six, the 9.0L V6 and the 12.1L V8, with one further entry listed without details. Each engine has its own specifications, torque values and diagnostic routines, and the cab, frame and electrical sections apply across the whole range.
Engines covered
- 14.0L inline-six (855 cu in) — turbocharged, diesel
- 9.0L V6 (552 cu in) — diesel
- 12.1L V8 (736 cu in) — diesel
Body styles covered
- Tractor truck, high tilt
- Tractor truck, low tilt
- Straight truck, high tilt
- Straight truck, low tilt
Trims covered
- D9K020 Gliders - High Tilt
- D9K042
- D9K064
- D9L020 Gliders - High Tilt
- D9L042
- D9L064
Known issues on the 1986 Astro. No recalls appear on the federal record for this model year, and NHTSA holds no owner complaints against it. The manual's job is consequently the routine one of keeping the truck serviceable. It documents the turbocharged 14.0L inline-six, the 9.0L V6 diesel and the 12.1L V8 diesel with procedures, specifications, torque values, wiring diagrams and diagnostics, and it carries the same treatment through the tilt cab, chassis, driveline and electrical systems of the tractor and straight truck versions.
