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1998 GMC B7 Service and Repair Manual
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$29.99 USD
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Covers all 1998 B7 trims — B7T042, B7T042 Bus (School) - Cab Forward ·
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$29.99
1998 GMC B7 Service and Repair Manual
Regular price
$29.99 USD
Unit price
This factory service and repair manual for the 1998 GMC B7 documents five engines: the 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. The body is the cab forward school bus, designated B7T042. Each engine has its own specifications, torque values and diagnostic routines, which matters when the same chassis can arrive at the shop with any one of five power units in it.
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. Nothing is recorded against this bus on the federal side, neither recall action nor owner complaint. The manual is left to cover the machinery, and there is a good deal of it. Every engine on the list is documented with procedures, specifications, torque values, wiring diagrams and diagnostics, and the cab forward chassis receives the same treatment through its brake, steering, suspension, driveline and body electrical systems.
VEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH POWER STEERING. SOME OF THESE VEHICLES WERE ASSEMBLED WITH AN INCORRECT INTERMEDIATE STEERING SHAFT. THE OVERLAP IN THE SLIP JOINT IS INSUFFICIENT ALL
Consequence
THIS COULD LEAD TO LOSS OF STEERING, INCREASING THE RISK OF A VEHICLE CRASH.
Remedy
DEALERS WILL INSPECT THE STEERING SHAFT AND, IF NECESSARY, REPLACE THE INTERMEDIATE STEERING SHAFT.
VEHICLE DESCRIPTION: MEDIUM DUTY TRUCKS EQUIPPED WITH AIR BRAKES AND ANTI-LOCK BRAKE SYSTEMS. CHAFFING OF THE ELECTRIC BRAKE CONTROL HARNESS CAN OCCUR RESULTING IN AN ELECTRICAL GROUNDING CONDITION.
Consequence
THIS CONDITION CAN CAUSE REDUCED BRAKING CAPABILITY OF THE FRONT BRAKES, INCREASING THE RISK OF A CR
Remedy
DEALERS WILL INSPECT THE HARNESS FOR CHAFFING AND PROPER ROUTING AND WILL REPAIR IF NECESSARY.
VEHICLE DESCRIPTION: SCHOOL BUSES, MEDIUM DUTY TRUCKS AND TRACTORS BUILT WITH BENDIX AIR ABS WITH AN EC-17 1030R ELECTRONIC CONTROL UNIT (ECU), THERE HAVE BEEN REPORTS OF UNWANTED ABS ACTIVATION AT L
Consequence
THIS CONDITION COULD CAUSE THE ABS ECU TO EXHAUST THE AIR AT THE AIR BRAKE MODULATORS FOR ONE OR MOR
Remedy
DEALERS WILL REPLACE THE ABS ECU.
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
00064H - SPECIAL COVERAGE (REVISED PART INFORMATION). SOME CUSTOMERS MAY EXPERIENCE A FAILURE OF THE ELECTRONIC DIESEL FUEL INJECTION PUMP. THIS SPECIAL POLICY APPLIES ONLY TO ELECTRONIC DIESEL-FUEL INJECTION PUMP REPAIRS AND/OR REPLACEMENT
THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE MEDIA DISC PLAYER WITH THE LATEST CALIBRATIONS TO CORRECT A CONDITION OF THE REAR ENTERTAINMENT SYSTEM NOT OPERATING AS INTENDED IN COLDER AMBIENT TEMPERATURE AREAS DUE TO CALIBR
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
SAAB/HUMMER/GM: DIAGNOSTIC TIPS/RECOMMENDATIONS WHEN POWER STEERING PUMP REPLACEMENT IS NECESSARY. ANALYSIS OF RETURNED POWER STEERING (PS) PUMPS THAT HAD BEEN REPLACED FOR NOISE, NO POWER ASSIST, NO OR LOW PRESSURE AND LEAKING CONDITIONS H
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
A FAILURE OF THE ELECTRONIC DIESEL FUEL INJECTION PUMP, LEADING TO COMPLAINTS OF POOR PERFORMANCE OR FUEL ECONOMY, HARD/NO STARTS, HESITATION, AND THE SERVICE ENGINE SOON LIGHT ILLUMINATED. SPECIAL POLICY ADJUSTMENT 00064. *TT PRODUCT FIELD
RELEASE OF NEW REAR BRAKE PIPE SHIELDS. *TT
Showing the 8 most recent of 17 technical service bulletins on file with NHTSA.
No complaints filed
No consumer complaints on file with NHTSA for the 1998 GMC B7.
Other Years of the GMC B7
2002 GMC B7 Service and Repair Manual2001 GMC B7 Service and Repair Manual2000 GMC B7 Service and Repair Manual1999 GMC B7 Service and Repair Manual1997 GMC B7 Service and Repair Manual1996 GMC B7 Service and Repair Manual1995 GMC B7 Service and Repair Manual1994 GMC B7 Service and Repair Manual1993 GMC B7 Service and Repair Manual