- Feb 26, 2015
- 148
I'm recently having an issue with my 2008 GMC Acadia. It has 180,000 miles on it. It shifts great when its warm out. When it gets below 40 degrees It seems like it wont shift out of 1st gear...maybe 2nd im not sure. Going 45mph its at about 4k rpm. Once it warms up it starts shifting fine again. Is only when its cold. It popped a code p0700, and p0752. Some of the possibilities are low fluid, dirty fluid, or bad shift solenoids. Im hoping....its just dirty fluid since it seems to only do it when cold. Has anyone had this problem? What amount of fluid will come out if I take out the drain plug and just refill? Should I use plain old dexron 6, or fully synthetic? Someone give me words of encouragement...lol