ok, searched and did not find an answer, so hopefully someone can help me. I have a 93 gc 5.2L that will not shift into overdrive until warm, and sometimes not even then. Tranny flushed and new filter, and NO my o/d switch is not on. Any Ideas??? thanks!

 

Could be the Transmission Control Module, or a sticky solenoid, or just a trans thats ready for a rebuild. How many miles are on the truck/trans?
Dan

 

186,000
I had thought stick solenoid, but would love some pic of its location if anybody has them, thanks for the help

 

I think 'ol blue hit the nail on the head. Just out of curiousity - is your avatar a film of CT scans or am I just seeing things???

 

nope, not CT
Actually its an MRI, just like to have photographic proof that I have a brain!

 

I don't laugh out loud very often and I have to tell you, I just did. That made my night. Welcome to the forum, becuase you're in man, you're in.