2000–2001 Mack CH, 2000–2001 Mack CL, 2000–2001 Mack CV and 6 other models Recall: VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH CERTAIN MERITOR-WABCO…
NHTSA campaign 01V189004 · Service Brakes, Air · filed Aug 1, 2001 · verified Jul 30, 2026
The defect
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS 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 NOVEMBER 16, 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 MACK AT 1-610-709-3011 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 Mack CH recalls
- 2002–2007 Mack CH and 3 other models — ON CERTAIN TRUCKS EQUIPPED WITH ASET AC MODEL ENGINES, THE…
- 2007 Mack CH and 3 other models — CERTAIN TRUCKS WERE RECALLED FOR THE INSTALLATION OF…
- 2003–2007 Mack CH and 3 other models — ON CERTAIN TRUCKS, A LEAK IN THE ASET AC FUEL INJECTION…
- 2002–2005 Mack CH and 3 other models — ON CERTAIN HEAVY DUTY CLASS 8 DIESEL TRUCKS EQUIPPED WITH…
- 2003 Mack CH and 1 other model — ON CERTAIN TRUCK CHASSIS, THE STEERING GEAR MOUNTING BOLTS…
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 01V189004. Data last verified Jul 30, 2026.