I installed my superchip flashpaq. drove it all night not beating on it. The tranny was shifting differently as soon as it was installed. Just now i was going about 35 and the O/D light started to flash. I pulled over in a parking lot shut her down for 10 mins and started her back up and it ran fine. when the light was flashing it was shifting hard from 1st to 2nd and the other gears where smooth. what is happening is the tranny sensing slippage and throwing it into a "LIMP MODE"?

 

did you ever figure out what was going on?

 

low fluid. flushed it adjusted bands and new filter. Got rid of the flash paq and got a Xcal3 soo much better