Goes in and out of overdrive

Have you check the transmission fluid? Also, what gears is it jumping in and out of? From 1st to overdrive? Also what size engine do you have and is it a 2wd or 4wd?

Sean

The trans fluid is full and the engine is 6.0, all wheel drive.
It's hard to explain in text but all gears seem to shift fine until it reaches the last one and kicks into overdrive. It will not stay there, goes in and out. I hear the engine rev up and down, like going from 3rd to drive, I watch the RPM's gauge go up and down slightly, every second. If I put the car in 3rd or push the "haul" button, it's fine, or if it is in drive, as soon as I reach 60 it drives normal.
Hope all this makes sense. Thank you so much for your reply.

Sheryl

It may be something as simple as a speed sensor or a solenoid but it also could be your transmission is failing again. I would take it back to the transmission shop and have them run a diagnostics on it, they will have a scan tool that will read the trans and see what it's doing.

Sean