This factory service and repair manual for the 1997 GMC T6500 covers a medium-duty truck in a single chassis designation, F6B042, with two engines that could hardly be more different in character: a naturally aspirated 6.0L gasoline V8 of 366 cubic inches, and a turbocharged 6.6L inline-six diesel of 403 cubic inches, both overhead-valve. Specifications, torque values, wiring diagrams and diagnostic procedures are separated by system and by engine, which matters on a chassis a shop may see with either one installed.
Engines covered
- 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
- 6.6L inline-six (403 cu in) — OHV, turbocharged, diesel
Trims covered
- F6B042
Known issues on the 1997 T6500. One owner complaint is logged with NHTSA for this model year, and it concerns the steering. On a medium-duty chassis that is no small matter, and the steering gear, linkage and column procedures here carry the adjustment figures, torque values and diagnostic checks that go with them. The rest of the manual works the same way through the two engines, the driveline, the brakes and the wiring, with the specifications kept separate for the gasoline V8 and the turbocharged diesel six.
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
