NHTSA Recall 11V272000: Automatic (service brakes)
MACK TRUCKS, INC reported this safety recall to NHTSA on , covering an estimated 1,524 vehicles. It affects 6 models including the Mack Granite (gu).
| NHTSA campaign | 11V272000 |
|---|---|
| Manufacturer campaign | SC0352 |
| Component | SERVICE BRAKES, AIR › SLACK ADJUSTERS › AUTOMATIC |
| Report received | May 3, 2011 |
| Owner notification | August 12, 2011 |
| Initiated by | Manufacturer |
Defect
Mack trucks is recalling certain model year 2011-2012 chu, cxu, gu, leu and mru trucks manufactured from october 15, 2010, through january 31, 2011, and equipped with gunite automatic slack adjusters. Due to an incomplete "knitting" of the iron at the time of casting, inadequate structural integrity of the slack adjuster housing can occur, which could cause the housing to break at the handle under normal operating loads.
Safety risk
Slack adjusters with this flow notch could crack under normal braking conditions causing loss of braking which could result in a vehicle crash.
Remedy
Mack trucks will notify owners and dealers will replace the subject slack adjusters free of charge. The safety recall began on august 24, 2011. Owners may contact mack trucks at 1-800-528-6586.
Notes
Owners may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (tty 1-800-424-9153), or go to <a href=http://www.safercar.gov>http://www.safercar.gov</a> .
Vehicles covered by recall 11V272000
| Make and model | Model years |
|---|---|
| Mack Granite (gu) | 2012 |
| Mack Gu | 2011 |
| Mack Leu | 2011, 2012 |
| Mack Mru | 2011, 2012 |
| Mack Pinnacle (chu) | 2011, 2012 |
| Mack Pinnacle (cxu) | 2011, 2012 |
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.