Transmission

[Prospector49]

To whom it may concern;
I puchased your Predator programmer U7180. Whenever I put it on the extreme setting and make my truck work hard, my transmission won't shift into overdrive. Then when I stop it won't go into reverse either. If I turn my truck off, sit still for approximately 15 minutes and reprogram the Predator to a lessor setting, my transmission is normal again. What do I need to do to prevent this from happening?

[mikel]

This is the first I have ever heard of such an issue.
Does the truck throw any codes when this happens?

Thanks

[johan]

My guess is your clutch is going bad, how many miles do you have on the truck?