Ok, I had a bad NSBU switch about 2 months ago. I put a new switch in and all was good for 2 months. Now my truck has no reverse when the truck heats up. The [R] flashes. When the truck cools down or sits for a little while everything works fine again until it heats up. When this started acting up I noticed alot of oil all over my front drive shaft and NSBU switch and all around there. I dunno where the leak is coming from cause I cleaned it real good and no oil. t/case vent? oil lines.

Yesterday I put another NSBU switch in and same problem. I have P0700 and P0743 Codes.

Any ideas?

I'm guessing its the TCC/PWM Solenoid

Fixed. PVM Solenoid.

Just popped one in. When the solenoid is hot I was getting an open on the meter. Once it cooled off it was reading 96ohms I believe it suppose to be 10-20. New one read 13.


:) cheap easy fix