Vehicle recall 16V099000 · February 19, 2016
Mack Granite (gu), Terrapro (mru) and 5 more models
The cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may loosen.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Mack Trucks, Inc. (Mack) is recalling certain model year 2012-2016 Granite (GU), Pinnacle (CHU, CXU), TerraPro (LEU, MRU), Titan (TD), and LR trucks manufactured from September 1, 2011, through September 8, 2015. The cap nut that retains the interaxle driveshaft yoke to the rear axle input shaft may loosen.
- Consequence
- If he cap nut loosens and falls off, the yoke can separate from the axle input shaft and allow the drive shaft to disconnect, increasing the risk of a crash.
- Remedy
- Mack will notify owners, and dealers will replace the cap nut. The input shaft threads will be inspected for damage. Any damaged input shaft will be replaced. These repairs will be performed free of charge. An interim notice was sent to owners on April 25, 2016. The recall began on June 7, 2016. Owners may contact Mack customer service at 1-610-709-2131. Mack's recall campaign number for this recall is SC0399.
- Notes
- Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Recall details
- NHTSA campaign
- 16V099000
- Reported to NHTSA
- February 19, 2016
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0399
- Owner notification
- June 7, 2016
- Vehicles potentially affected
- 33,981
- Initiated by
- the manufacturer
- Components
- Power train › Driveline › Driveshaft
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Mack Granite (gu) (2012-2016): 2016, 2015, 2014, 2013, 2012
- Mack LR (2015-2016): 2016, 2015
- Mack Pinnacle (chu) (2012-2015): 2015, 2014, 2013, 2012
- Mack Pinnacle (cxu) (2012-2015): 2015, 2014, 2013, 2012
- Mack Terrapro (leu) (2012-2015): 2015, 2014, 2013, 2012
- Mack Terrapro (mru) (2012-2016): 2016, 2015, 2014, 2013, 2012
- Mack Titan (td) (2012-2016): 2016, 2015, 2014, 2013, 2012
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.