This factory service and repair manual for the 1995 GMC B7 pairs three engines with one body: the naturally aspirated 6.0L and 7.0L OHV gasoline V8s and the turbocharged 6.6L OHV inline-six diesel, in the cab forward school bus designated B7T042. Fuel systems, ignition or injection timing and emissions controls differ across those three, and each is given its own specifications and diagnostic procedures, while the chassis, brake and electrical sections apply to every build.
Engines covered
- 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
- 7.0L V8 (427 cu in) — OHV, naturally aspirated, gasoline
- 6.6L inline-six (403 cu in) — OHV, turbocharged, diesel
Body styles covered
- Bus (school), cab forward
Trims covered
- B7T042
Known issues on the 1995 B7. This model year comes through the federal record clean, without a recall or a single owner complaint. That puts the emphasis on coverage, and the manual has three engines to look after. The 6.0L and 7.0L gasoline V8s and the turbocharged 6.6L diesel six each get their own procedures and specifications, their own torque values, wiring diagrams and diagnostics, and the cab forward bus chassis is documented from the front axle back through the driveline to the rear body wiring.
THESE VEHICLES WERE ASSEMBLED WITH A TRANSMISSION REVERSE SIGNAL SWITCH THAT COULD LEAK CAUSING LOSS OF ELECTRICAL CONTACT WHEN THE TRANSMISSION IS IN REVERSE. THIS DOES NOT MEET THE REQUIREMENTS OF F
CONSEQUENCE OF NON-COMPLIANCE: THIS CONDITION CAN PREVENT THE BACKUP WARNING SYSTEM (LIGHTS AND AUD
DEALERS WILL REPLACE THE REVERSE SIGNAL PRESSURE SWITCH.
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
EFFECT OF STEERING BOX LIMITER ADJUSTMENT ON TURNING RADIUS AND POSSIBILITY OF POWER STEERING SYSTEM DAMAGE DUE TO IMPROPER ADJUSTMENT. VARIOUS 1990-2004 MODELS. *TT
RELEASE OF NEW REAR BRAKE PIPE SHIELDS. *TT
SOME DRIVERS MAY COMMENT ABOUT THE ABS LAMP ILLUMINATING. AN ABS DIAGNOSTIC TROUBLE CODE 0281 - BRAKE SWITCH CIRCUIT MAY HAVE BEEN SET ON THOSE VEHICLES EQUIPPED WITH HYDRAULIC BRAKES. THE DIAGNOSTIC TROUBLE CODE WILL BE STORED IN MEMORY AN
INFORMATION ON FUEL TANK SHIELDS. *TT
EXPERIENCING NOISY RELEASE BEARING, SLIPPING CLUTCH OR INOERATIVE CLUTCH. *TT
CONCERNS WITH INTERMITTENT MULTIFUNCTION ALARM ACTIVATION. *TT
Showing the 8 most recent of 12 technical service bulletins on file with NHTSA.
