Allison Transmission 6TH Gen TCM: Power train — control module (tcm/pcm/tecm)

Affects Allison Transmission 6TH Gen TCM · — — about 584 vehicles.

The hazard

Failure to achieve 4th gear lock up may prevent the vehicle from achieving the full sequence needed to pump water, which can increase the risk of injury in an emergency.

What to do

Vehicle manufacturers will update the TCM software, free of charge. ATI notified the affected vehicle manufacturers on July 31, 2023. Owners may contact ATI customer service at 1-317-242-5000.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational