GMC Terrain, Equinox, and SRX Forum banner
1 - 2 of 2 Posts

10,785 Posts
muzzyc6 said:

I have a 2010 LTZ V6 Auto that is reluctant to upshift from 3 to 4 most times unless I let off on accelerator.
Bring it to the dealer, and they can re-flash the computer.
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.