The worst 1998 GMC B7 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 3
Service brakes, air: antilock
- What is wrong
- 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 low speeds caused by 1) chafed ABS wheel speed sensor wires on rotating parts or 2) a damaged component at the wheel end that generates a certain type of erratic sensor signal.
- Risk
- This condition could cause the ABS ecu to exhaust the air at the air brake modulators for one or more of the wheels. This could result in extended braking distances and a possible crash.
- Remedy
- Dealers will replace the ABS ecu.
Recall number 00V232008 · Recall details
Steering: gear box (other than rack and pinion)
- What is wrong
- 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 allowing the steering shaft to separate.
- Risk
- 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.
Recall number 98V237000 · Recall details
Electrical system: wiring: front underhood
- What is wrong
- 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. This will illuminate a warning light on the instrument panel and shut off the ABS feature.
- Risk
- This condition can cause reduced braking capability of the front brakes, increasing the risk of a crash.
- Remedy
- Dealers will inspect the harness for chaffing and proper routing and will repair if necessary.
Recall number 98V073000 · Recall details
Technical service bulletins for the 1998 GMC B7 18
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This warranty administration bulletin provides information regarding the field action courtesy...
- This technical bulletin provides a procedure to reprogram the media disc player with the latest...
- 00064H - special coverage (revised part information). some customers may experience a failure of the...
- Vehicle Recalls
- Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
- Saab/hummer/gm: diagnostic tips/recommendations when power steering pump replacement is necessary....
- A failure of the electronic diesel fuel injection pump, leading to complaints of poor performance or fuel...
- Effect of steering box limiter adjustment on turning radius and possibility of power steering system...
- A failure of the electronic diesel fuel injection pump, leaking to complaints of poor performance or fuel...
- Release of new rear brake pipe shields. tt
Compare the 1998 GMC B7
Other model years
Questions about the 1998 GMC B7
Is the 1998 GMC B7 reliable?
Owners have filed 0 complaints about the 1998 GMC B7.
What is the most common problem with the 1998 GMC B7?
There are not enough complaints to tell.
How many recalls does the 1998 GMC B7 have?
3 recalls, covering service brakes, air, steering and electrical system.
VIN decoder
See the problems and recalls for an exact car
Buying a used 1998 GMC B7?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history