Good afternoon, I'm new to this forum and just purchased a 2007 gmc acadia. The SUV seems clean but does have over 190,000 miles. Runs and drives but has issues with transmission. After about 10 minutes driving the transmission seems to slip out of gear and goes nowhere. I've heard about the wave plate but also understand that it would make noise if it broke, I've taken apart the TCM and found 3 of the 4 solenoid switches were bad. I replaced them and put everything together but transmission still seems to slip out. I also have multiple codes that show up with my scanner but was looking to update it with maybe a Bluetooth or maybe foxwell hand held. Has anyone had this kind of issue after replacing the switches and what is the best scanner to use with this vehicle. Thank for accepting me into this forum and please forgive me if I have posted this in the wrong area.