I just got a check engine light coded P0770. I've done some research and apprently there are three 3 solenoids that may be triggering the check engine light. It's worth mentioning that when I come to stop and the transmission lever (Automatic) is in "D"rive or "R"everse the truck immediately stalls out. However when the truck is in park and neutral the truck idles fine and does not turn off, but just a soon as any moving gear is engaged the truck immediately turns off. I never had any transmission problems before and there's no hard shifts.
Any ideas as to which solenoid needs replacing?
Has anyone changed these solenoids on their own? Suggestions?
Is it bad, other than a bit dangerous, to drive my car home (I'm 450 miles away)? Will more damage be done to the transmission? The local dealership told me the transmission would blow up.
I also have a P0135 code (Bank 1 sensor 1 and O2 sensor heater circuit malfunction) showing up but these are the O2 sensors and, well, I'm pretty sure it's unrelated to my transmission issue. Right?