I went on a 300 mile trip today, everything was fine, truck was running great, so on the way back I stop to eat, when done I go out get in my truck start it up, and the overdrive lite is flashing?, then about 20 seconds later the check engine light comes on?, so I put it in gear, no first gear, now im a 150 miles from home, and have no money for a tow truck, so I put the truck back in gear and start giving it a little more gas, now im rolling very slowly, so I head for the freeway. Once up to speed everything seems ok, but shifts very eratic when I have to slow down. I did make it home and will be taking my truck to the dealer in the morning. The only mods to the transmission are a factory tech valve body and a 4x4 deep pan. the valve body has been in my truck over 6000 miles. Does anybody have any idea what happened?, and why would a transmission cause the check engine light to come on?????.

Thanks

Larry.

 

Maybe Greg will chim in.....

I remember something electronic on the tranny that can cause some weird things....

The valve body was put in on INlb not FTlbs right??

 

By the way,

Did you pull the chip and try it?

 

I didn`t pull the chip, I will do that in the morning, its dark and raining like a **** right now. I don`t think its the chip, ive had this chip in my truck for 6 months and about 7500 miles with no problems.
I will pull the chip in the morning just to see what happens.

Thanks

Larry.