mobile-menu-icon
GM Authority

Reply To: 2016 Sierra 8-Spd Issue

#509366
Rich
Participant

They were able to capture the issue I explained to them and ended up swapping the Transmission fluid with a synthetic, and replacing the filter, this completely fixed the issue.

Subscribe to GM Authority

For around-the-clock GM news coverage

We'll send you one email per day with the latest GM news. It's totally free.