I need some help, my tranny locked up in fourth gear and it threw a code of 0700. I wiped out the dtc's and it did it again. The 2nd time it wiped them out, my tranny temp jumped up to 225 fast. What could be the problem, hauling about 23,000lbs from San Antonio to houston. Did this hurt the Allison? Thanks, Texas Rocket

 

Welcome to the Limp Club..

P0700 - Transmission Control Module (TCM) System Malfunction..


Were you towing with a programmer turned up over about 40hp?

 

limped the booger, what power were u running the programmer at?

 

oh ya, I had have it on 70 horse. I've been there a couple of times before with the same wieght and i've never had that problem before. I've had a bad morning, a motorcycle hit me and my tranny stuck and i had credit fraud all within 4 hours a bad day for rocket.

 

yea 70 hp tune is a bit much for 20,000+ load.. I dont pull my 5th wheel camper over a 60 tune.. and it only weighs 14,000.. Might start savin for a shift kit, or a full trans bud. Hopefully next week will be a better week for ya.

 

yeah 70 is too much for towin that weight

 

Thanks, guy's. Next time i'll bump it down to 30 horse. DO you think it messed up my tranny at all.

 

Well, I wouldnt say you messed it up, but when you limp the trans, it makes it where it wont hold the power quite as well from then on.. I would definately look into either a shift kit from Transgo or a full trans. they help with piece of mind.

 

Yep I have seen that code alot on my Duramax. I have an 06 LBZ and I went thru 4 stocker trannys before puttin the money down and gettin a fully built suncoast. You dont have to go that extreme, I would suggest a shift kit and maybe a TC if you really really really desperatly needed it. Your trans isnt gonna shift as well after that so go east on her and keep the ship turned down and she'll hold together. Hope that helps and you have a better day bud.

 

i know a guy in marble falls who can rebuilds it for a low price if you lookin into a rebuild