My totally stock truck (GMC Dmax/Ally) way back when went limp on me the first time I pulled a load... about 7000 lbs.Mike L. said:VP02
I have seen stock Allisons go into limp towing. I think the TCM sensed too much torque converter slippage and went into limp. Usually after you clear the code all is well. You might have a converter clutch piston that wasn't quite machined correctly. Problem is, it will happen again when strained. If it's under warranty, go get a new trans, if it is not, time for an update.
emerick115 said:I was told if you go into limp mode all you need to do is shut the truck off and wait 15 seconds, and then you should be able to go again. Have never tried it, its just what I heard.