Fire123

Sailor- haven't had a chance to take it in.

Thanks mmjsport. I'll take any ideas that helps me at the dealer

mmjsport

No problem, Glad I could help. Give most credit to the GM Tech who posted it though, Shawnvw I believe, he has lots of knowledge. Hope you get your problem fixed. Good luck.

deserttramper

sooo.....ive had my tranny fluid flushed by a shop and ive done myself only to find 2 months later.....its overheating and starting to slip again. ive researched millions of articles on the bad trans in my year silverado 2016. bad fluid from factory and such. but today i heard it could be the radiator cooler filter being clogged causing the problem. has anyone experienced this and if so....please let me know how to clean inner cooler myself or if i must go pay a shop? any input on this matter be greatly appreciated!!! thank you

dpieroni3

Nobody has said what trans they have. In 07, is it a classic or new body style ? 1500,2500 or 3500? gas or diesel? In 2016 they used 6 and 8 speed trans along with an allison. If you have a 6l80,6l90 you could be feeling tcc apply just after the 1-2 shift an that is normal and sometimes you can feel the 2-1 down shift. like on a 4l60 a 2-3 and a 3-2 shift clunk is normal due to the apply and release of 2-4 band and clutch timing. 6L trans have issues with torque converter failure causing oil pump scoring and loss of pressure . The 8L trans has tcc shudder issues due to fluid contamination and gets flushed and replaced with HPLV fluid and if it still shudders usually gets a converter. They also have fluid temp sensor issues setting a P0711 and harsh shift concerns. For the best help from the talent here the more information you can give will result in a better result. Just a thought to try to be of help.