Vehicle recall 93V171000 · October 19, 1993

Chevrolet B7T042 and GMC B7T042

The brake pedal push rod can disengage from the brake booster.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: The brake pedal push rod can disengage from the brake booster.
Consequence: If the brake pedal push rod disengages from the brakebooster, it will result in the loss of service brakes.
Remedy: Dealers will inspect for proper brake pedal travel and install a brake pedal return stop to prevent possible push rod disengagement.
Notes: System: brakes; hydraulic; linkage; pedal.vehicle description: B7 school bus chassis equipped with hydraulic brakes.if your vehicle is presented to an authorized dealer on an agreed upon servicedate and the remedy is not provided within a reasonable time and free of chargeor the remedy does not correct the defect or noncompliance, please contactgmc service center at 1-313-456-4547 or Chevrolet service center AT1-800-222-1020. Also contact the national highway traffic safetyadministration's auto safety hotline at 1-800-424-9393.

Recall details

NHTSA campaign: 93V171000
Reported to NHTSA: October 19, 1993
Filed by: GENERAL MOTORS CORP.
Owner notification: October 15, 1993
Vehicles potentially affected: 729
Initiated by: NHTSA’s Office of Defects Investigation
Components: Service brakes, hydraulic › Pedals and linkages

Recall 93V171000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Chevrolet B7T042 (1993): 1993
GMC B7T042 (1993): 1993

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