1987 GMC Caballero service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- Base Standard Cab Pickup 2-Door
- Diablo Standard Cab Pickup 2-Door
Engines covered
- 5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated
- 4.3L 262Cu. In. V6 GAS OHV Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
MANUAL VALVE LINK IN THE TRANSMISSION MAY HAVE BEEN IMPROPERLY FORMED.
THE VALVE LINK COULD SEPARATE RESULTING IN A GEARSELECTION DIFFERENT FROM WHAT THE DRIVER SELECTS.
REPLACE THE MANUAL VALVE DETENT LEVER LINK.
SOME OWNERS MAY COMMENT ON HIGH OIL CONSUMPTION AFTER A GM GOODWRENCH REMANUFACTURED 4.3L V6 ENGINE IS INSTALLED. *TT
