mobile-menu-icon
GM Authority

Reply To: 2016 Sierra 8-Spd Issue

December 5, 2016 at 12:30 pm #146097
beaurejim
Participant

I purchased a 2017 GMC Sierra 5.3 with the 8 speed transmission two weeks ago. (This is my 5th GMC truck) no previous problems.
I now have 1000 miles on this truck.
I noticed the truck shudders and seems to have a hesitation between gears, especially at low end. I went in on Dec 2nd 2016 and talked with the dealer who said it takes a while for the transmission to learn my driving habits. What? . It also clunks when taking off. Was told the clunk is normal. This morning Dec 5th i warmed the truck up for ten minutes put it in reverse and the truck would not move. just revved up. 10 seconds later it slowly starts to back up onto the street. I put it in drive and it still won’t go ,just reeves up for another 10 seconds before it finally jumps into gear. Made an appointment to bring it back to the dealer.
This can not be normal for a commercial grade pickup.

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.