Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
1998 GMC B7 Service and Repair Manual
Regular price
$29.99 USD
Unit price
Covers all 1998 B7 trims — B7T042, B7T042 Bus (School) - Cab Forward ·
Digital format
Any device
Yours forever
Money-back
4.7
·
Trusted by 14,000+ mechanics & DIYers
End of Preview
Unlock the Full Manual
Complete repair procedures
Wiring diagrams & schematics
Torque specifications
Full search & bookmarks
$29.99
Scroll to view more pages
1998 GMC B7 Service and Repair Manual
Regular price
$29.99 USD
Unit price
1998 GMC B7 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
- B7T042
- B7T042 Bus (School) - Cab Forward
Engines covered
- 6.0L 366Cu. In. V8 GAS OHV Naturally Aspirated
- 7.2L 441Cu. In. l6 DIESEL OHV Turbocharged
- 7.0L 6998CC 427Cu. In. V8 GAS OHV Naturally Aspirated
- 6.5L 395Cu. In. V8 DIESEL OHV Turbocharged
- 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
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