Recalls for 1998 Gmc C7500

DEFECT #1 - SERVICE BRAKES, AIR:ANTILOCK

Posted on: 2000-09-26
Description
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.

Consequence
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.  

Corrective Action
Dealers will replace the abs ecu.

Notes
Owner notification began december 14, 2000 for the b7 series school buses and on march 15, 2001, for the medium duty trucks and tractors.  Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1022 or gmc at 1-800-462-8782.  Also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).

DEFECT #2 - ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD

Posted on: 1998-04-09
Description
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.

Consequence
This condition can cause reduced braking capability of the front brakes, increasing the risk of a crash.

Corrective Action
Dealers will inspect the harness for chaffing and proper routing and will repair if necessary.

Notes
Owner notification began april 24, and july 30, 1998.owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1020 or gmc at 1-800-462-8782.also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).