Complaint 1961511
2019 MACK GRANITE (GR) • POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT • incident Jun 28, 2021
- Complaint ID
- 1961511
- Make
- MACK
- Model
- GRANITE (GR)
- Model Year
- 2019
- Component
- POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
- Incident Date
- Jun 28, 2021
- Date Received
- Jan 25, 2024
- Data As Of
- Sep 1, 2026
Complaint Summary
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
Owner Narrative
The driver was merging on the freeway and experienced complete loss of power. He was able to get over to the shoulder and out of traffic. One of the rear differentials had failed before when the Bull Gear rollers fell out and destroyed the differential carrier but luckily onsite. (Attached is the history of these failures) The truck was towed back to the dealer and was missing the rear drive shaft, which had fallen out on the freeway. This truck has had differential problems and had the differentials replaced multiple times before and since. The dealer performed all the work, before and after this failure. There was no warning before this happened.
Owner-submitted narrative on file with NHTSA. Complaint narratives are self-reported and have not been verified.