Recall 11V272000: 2011–2012 Mack Pinnacle (chu) and 4 other models
- Report received
- May 3, 2011
- Manufacturer
- Mack trucks, inc
- Potentially affected
- 1,524vehicles
- Model years
- 2011–2012
Check your own vehicle. A recall applies only to vehicles within the affected build range. Enter your VIN at nhtsa.gov/recalls. Recall repairs are free at a franchised dealer.
What NHTSA recorded
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.
Possible consequence
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.
Affected model years
Pages for each model year show complaints, parts, mileage and other recalls.
- 2012 Mack Granite (gu)0 complaints
- 2011 Mack GU0 complaints
- 2011 Mack MRU0 complaints
- 2012 Mack MRU0 complaints
- 2011 Mack Pinnacle (chu)0 complaints
- 2012 Mack Pinnacle (chu)0 complaints
- 2011 Mack Pinnacle (cxu)0 complaints
- 2012 Mack Pinnacle (cxu)0 complaints
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.