1997 GMC T6500 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
- F6B042
Engines covered
- 6.0L 366Cu. In. V8 GAS OHV Naturally Aspirated
- 6.6L 403Cu. In. l6 DIESEL OHV Turbocharged
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
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
SOME MEDIUM DUTY TILT CAB TRUCKS WITH 3116 CATERPILLAR DIESEL ENGINES EQUIPPED WITH 26 INCH FAN BLADES MAY EXHIBIT THE ENGINE OVERHEAT LAMP ON, AND THE TEMPERATURE GAUGE IN THE RED ZONE. *TT
AIR INLET RESTRICTION GAUGES THAT POP OR THAT THE VEHICLE EXHIBITS LOW HORSEPOWER. YD
STEERING WHEEL KEEPS LOCKING UP AT ANYTIME AND ANY SPEED. TOOK TO DEALER, AND THEY STATED THAT STEERING COMBINATION SWITCH KEEPS BREAKING, AND THAT IS CAUSING STEERING TO LOCK UP. CAUSE UNKNOWN. PL
