So we put a 215 tune on my truck along with a hj and now after driving the truck around for a few hours I cannot get the truck through 3rd gear and now seems to free rev. Yes i know that these trannies wern't made for this much but I was being dumb. There were no codes at first after a few restarts and then when we finally parked the truck it came up with a p0776 code. Pressure Control Solenoid "B" Performance or Stuck Off.


Any one got any ideas whats going on here. and yes i do plan on upgrading in the near future just not so soon. I just got the truck yesterday. Thanks, MattEdited by: dpfcummins

Better call ATS or Suncoast tomorrow..........http://www.dieselplace.com/forum/smileys/Embarrased.gif


The tranny had no time to learn or adapt..........you put a stack on it worth 450HP and way over what the Allison can take for torque......


So reset the codes with the Quad 215 tuner..........put the stock tune in and drive with a low HP tune for a while and keep increasing the HP till you get the the 90-100 HP tune ..........


Then stop or just order the tranny.





Thttp://www.dieselplace.com/forum/smileys/Clown.gifNY

You have lost your C2 clutch, maybe even C4. When you get a code and it names a solenoid and it says performance stuck off; that means the computer commanded that particular gear, that gear did not perform as computer expected, and the computer shut it off. Limp. You can clear the code and it might work ok without the program. You have in fact hurt the trans. Converter is probably worthless at this point also.


mike

I thought the whole "limp" thingy was to protect the tranny from grenade'ing itself ... I could see if he repeatedly limped it it will progressively get weaker but first time limp take C2 and a converter ???





Matt


Your not pulling our legs are ya ,I mean with a screen name of dpfcummins I gotta ask ??


Are you saying your tranny after sitting upon restart it will not reset the limp but continue to limp ?? Did you do a lot of hole shots ??


If so then C1 is gone and your screwed ... This seems to be happening a lot with the later years ... What ever GM did to address driveability has made it weak as hell ....


The 01 Allison as mine is took tremendous abuse ...





Mac Edited by: Mackin

Not pulling any legs here Mac. Have a cummins 12v pulling truck that decided to retire for a little while and went and bought a dmax.


Ok i went out and drove the truck some more. No tuner, no juice. I erased the code. Drove the truck a little and truck seems to shift fine and hold power in first and second. When the truck is supposed to shift to third it just starts to free rev. The attitude will show 3rd but its not getting into 3rd. Then when i came to a stop, the code came back on. Leaving the code on makes the tranny start in 3rd and stay in third. It holds the power just fine in 3rd also it just doesnt want to shift into any other gears. I thought my clutches were burnt but it doesnt make sense why it would run fine in 3rd when the code comes on, and 1&2 seem to hold fine when the code is off.


Yes me and Kyle03D did do a bunch of hole shots in my truck.


One thing i am wondering about is when we did the hole shots the tranny seemed to want to "herk and jurk" as me and Kyle say, when shifting into third. This was all before the big free rev problem.


Thanks, mattEdited by: dpfcummins

Yep, when in limp mode it runs fine in third gear no sliping. It is a problem getting into 3rd. Would some toasted clutches cause this, and then limp mode just has some way of getting it into third?

When cleared codes, it runs fine in 1st, goes into second fine, and then slips like crazy and can't get it to go over 40-45 mph.(attitude says its in 3rd).


Then when stop, codes set, goes into limp mode and then as you all know, start off in 3rd doggy but then when up to speed, runs just like normal in 3rd and will accelerate past 45mph till rpms would run out.


Toasted clutches aren't too bad of a problem as they will be replaced with the upgrade, but I'm thinking somthing else is doing this. There is solenoids, and they do control pressure to places, why whouldn't the 776 code really be refuring to a solenoid problem???


I just don't understand how clutches could be destroyed in 1 day.


No real boosted launches, just nailing it from stop, and maybe a burnout or 5.

If it rolls out fine in 1st and 2nd Sounds like you burned up C3 .... You must have really been standing on it on overdrive ,,, Solenoids just don't go bad if your lucky you'll drop the pan and something came unplugged but I doubt it ...


Will it go in reverse ??


You need a Tech II to further diagnose,to command each gear ...


Or throw a NSBU at it for sh*ts and giggles .... http://www.dieselplace.com/forum/smileys/HiHi.gif


Mac Edited by: Mackin

Well i have to admit that i put it into limp mode a few times today. Maybe like 5. Dont worry about telling me i'm a dumb a$$ i already know it.http://www.dieselplace.com/forum/smileys/Embarrased.gif


Reverse seems to be ok. The only thing is that the last time we took it up the road and went to turn around it wouldnt go into any gear. No reverse, or anything. If i remember corectly we shut the truck off and put it back into gear and it went into gear just fine. I will try and get it to the dealer tomorrow to see what i can find out with the tecII. Thanks, matt

So does anyone thing that this may actualy not be a burnt up clutch situation,besides kyle. I searched all over this site and cant find anyone who came up with the same code i have. I talked to ATS yesterday and they weren't much help. Clint wasn't in so i just talked to Jowel or however you spell it. He just said yep thats fail safe mode and yoiu need a new ATS tranny. Just seemed like he wanted to sell parts.


I'm taking it into the dealer tomorrow to see what they can figure out. I'll let you know what happens. Thanks, matt

How many miles on the truck? I would be inclined to think that if you have not been hot rodding other then that one time, the transmission should have not done that unless one of two things.


First= the previous owner abused it, in which you should have a 30 day 1000 mile warranty.


Or


second= the transmission had a problem from the factory that decided to raise its ugly head now, which you may be stuck with now after the power you poured to it.

Looks like a trip to MI is in order for you.. I can get ya hooked up as soon as next weekend if you'd like..

The truck has 28,000 on it and i got a bumper to bumper warranty for 12months 12,000 miles on it when i bought it monday. So i should be good for up till 40,000 on it. I am planning on talking the truck up to Eric here as soon as i sell some more parts off my dodge.


One thing was interesting that i found out tonight, I was bored so i took the truck out for a drive. The codes came on and the truck ran fine through the first 3 gears. Problem is it now free revs in fourth. I did get it to free rev in 3rd once but, all the other times it ran just fine in third and i was getting on it. Hopefully the dealer can figure out tomorrow what the heck is going on. I'm hoping its just something stupid so that i have my truck for the weekend and a trip next week. Matt

Doctor Merchant DM, I presume? http://www.dieselplace.com/forum/smileys/Cool.gif http://www.dieselplace.com/forum/smileys/Big Smile.gif Eric, looks like you have the same prognosis as I. Have some steel plates on hand, and I suggest new C3 and C4 pistons. (sorry guys, this was a doctor kind of thing http://www.dieselplace.com/forum/smileys/HiHi.gif).


mike

Two words for ya: Contaminated VALVE-BODY


It could be a valve body problem? I lost 4th gear the same way, but no traces of why? Solenoids/or valve body probilily? Most likely you are going to need a trany upgrade at the power you are reaching. Ats is good stuff IMHO. Edited by: JRmac