GMC B7 complaints by model year
1998 GMC B7 recalls (3)
Service brakes, air › Antilock
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…
Remedy: Dealers will replace the ABS ECU.
Steering › Gear box (other than rack and pinion)
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.
Remedy: Dealers will inspect the steering shaft and, if necessary, replace the intermediate steering shaft.
Electrical system › Wiring › Front underhood
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.
Remedy: Dealers will inspect the harness for chaffing and proper routing and will repair if necessary.
Frequently asked questions
How many recalls does the 1998 GMC B7 have?
There are 3 recalls for the 1998 GMC B7, the most recent from September 7, 2000 (antilock). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.