Posting for a friend.
2012 GMC 2500 with deletes and Anarchy Tuning. Truck ran great since tuner my u til 4 weeks ago. Drives fine until it warms up, once everything is at operating temps and you kill the truck and crank it back up it slams into gear (R and D). Then when you start driving and come to a stop it's like it pops into N and when you give it gas it slams into gear. Park the truck and let it cool down the process starts over. We can change tunes and it drives great for a day or so then starts with the same issues. Took it to the tranny shop and of course it wouldn't do it with him. Any ideas what to look for? Thanks.
2012 GMC 2500 with deletes and Anarchy Tuning. Truck ran great since tuner my u til 4 weeks ago. Drives fine until it warms up, once everything is at operating temps and you kill the truck and crank it back up it slams into gear (R and D). Then when you start driving and come to a stop it's like it pops into N and when you give it gas it slams into gear. Park the truck and let it cool down the process starts over. We can change tunes and it drives great for a day or so then starts with the same issues. Took it to the tranny shop and of course it wouldn't do it with him. Any ideas what to look for? Thanks.