1993–2001 Chance AH-28 CNG, 1993–2001 Chance LFB-29 Opus Recall: VEHICLE DESCRIPTION: STREETCARS AND TRANSIT BUSES EQUIPPED WITH CERTAIN…
NHTSA campaign 01V189003 · Service Brakes, Air · filed Jul 18, 2001 · verified Jul 30, 2026
The defect
VEHICLE DESCRIPTION: STREETCARS AND TRANSIT BUSES EQUIPPED WITH CERTAIN MERITOR-WABCO BRAKE SYSTEM TWO AND FOUR PORT RELAY VALVES. THE VALVE MAY STICK OPEN WHEN A HIGH-PRESSURE APPLICATION IS RELEASED.
The risk
WHEN THE VALVE STICKS OPEN, IT CAN RESULT IN A TOTAL LOSS OF AIR FROM EITHER THE SERVICE OR THE PARK BRAKE SYSTEM. THE DRIVER MAY LOSE BRAKING ABILITY UNDER A SERVICE APPLICATION, POSSIBLY RESULTING IN A VEHICLE CRASH.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
DEALERS WILL REPLACE THESE VALVES. OWNER NOTIFICATION BEGAN JULY 18, 2001. 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 CHANCE COACH AT 1-888-391-1777 OR MERITOR WABCO AT 800-535-5560.
ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).
Affected vehicles
Related recalls
More Chance AH-28 CNG recalls
Other campaigns involving Chance vehicles
Source: NHTSA recall database, campaign 01V189003. Data last verified Jul 30, 2026.