1998 Chevrolet B7 Service and Repair Manual

This factory service and repair manual for the 1998 Chevrolet B7 carries five engines: the naturally aspirated 6.0L and 7.0L OHV gasoline V8s, the turbocharged 7.2L and 6.6L OHV inline-six diesels, and the turbocharged 6.5L OHV V8 diesel, all fitted to the cab forward school bus designated B7T042. Three turbocharged diesels in one lineup means a good deal of injection, boost and cooling material, and it is written per engine, with the chassis, brake, steering and electrical sections shared across the year.

Engines covered

• 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
• 7.2L inline-six (441 cu in) — OHV, turbocharged, diesel
• 7.0L V8 (427 cu in) — OHV, naturally aspirated, gasoline
• 6.5L V8 (395 cu in) — OHV, turbocharged, diesel
• 6.6L inline-six (403 cu in) — OHV, turbocharged, diesel

Body styles covered

• Bus (school), cab forward

Trims covered

• B7T042

Known issues on the 1998 B7. One owner complaint is recorded for this model year, raised against the engine and engine cooling. Engine and cooling work is the manual's densest material. Each of the five engines has its own mechanical procedures, clearances, torque values and diagnostic routines, and the cooling coverage gives the tests, pressures and service steps that go with them, backed by wiring diagrams for the sensors, gauges and warning circuits that report a temperature problem before it becomes an engine problem.