Well honestly I am getting a little tired of this. I pull a 12000 pound trailer often. Twice in last two months after long trips I have limped the tranny. First time it happened I took it to the dealer and had valve body replaced, nuetral safety switch, and some other switch. Seem to have fixed problem. Then again about 1200 miles later. Same scenario going up hill this is in the south not in the mountains. When I say hill its uphill but not anything compared to any mountain. Then after shutting off it cleared itself. This weekend about 1000 miles later it does it again. Again clearing itself.

Does have programmer. Predator set on two mode at 40hp.

Any suggestions. No I am not going to buy another programmer. Honestly this is my third duramax. First two had alli problems that GM could not fix before I was pissed off enough to have it replaced. I am thinking of going dodge with manual for hauling.

Any thing I could do before going that route?

threeman
No matter what truck you get you will have to address the transmission, especialy with a programmer. Get your Dodge and you will find the same problem when you start wasting your clutch disc. Why don't you fix the trans you have with a Suncoast and be happy.
mike

threeman
No matter what truck you get you will have to address the transmission, especialy with a programmer. Get your Dodge and you will find the same problem when you start wasting your clutch disc. Why don't you fix the trans you have with a Suncoast and be happy.
mike
Mike.....

Is the suncoast a new transmission or an upgrade to the alli? I keep hearing about the "Suncoast" upgrade but have yet to figure out what it is....

Look forward to hearing from you....

If I may..

The Suncoast transmission is avail in a few different levels. The highest level being a complete replacement trans that is built extremely heavy duty.

The lesser expensive options are parts that need to be installed in the trans. Depending on your abilities and desires, it can be done by a DIYer.

I think I am going to try it again without the programmer. The next truck that I get I will not have a programmer. These trucks cannot handle the added horse power with a big load. I routinely pull anywhere from 8k to 14k. This sucks!

All you read about allisons is that "they are built extremely tough". I am not at all 100% satisfied with any of the allisons that I have had. I hate to say I have not had a better truck than a 99 ford 350 without a programmer. That was a tough truck. It pulled numerous loads of the same size all over the u.s. 300k I figured it was time to give it a rest and get another truck.

I forgot to mention the truck only has 65k miles on it. That sucks as well.

You have to keep in mind that the Allison is a very stout transmission.......in a stock truck. They are simply not made to handle much more then what the dmax can put out stock. It sounds as if your placing alot of blame on the transmission, but your asking alot, adding power and towing pretty heavy...

Your 99 Ford may have been a good truck, but you mentioned with out the programmer... These are good also stock.

I think I am going to try it again without the programmer. The next truck that I get I will not have a programmer. These trucks cannot handle the added horse power with a big load. I routinely pull anywhere from 8k to 14k. This sucks!

All you read about allisons is that "they are built extremely tough". I am not at all 100% satisfied with any of the allisons that I have had. I hate to say I have not had a better truck than a 99 ford 350 without a programmer. That was a tough truck. It pulled numerous loads of the same size all over the u.s. 300k I figured it was time to give it a rest and get another truck.
Get the trans "beefed" a bit, and put a killer tuner on it. Tow at ~300RWHP, and play at +400rwhp. You'll be very happy with your truck.

threeman sounds like he is doing a little trolling.

threeman sounds like he is doing a little trolling.
I always give folk the benefit of the doubt.

You saw my stock trans Mike. Lots of heavy high-speed towing through mountains with a TTS Tow Tune, several drag days, a truck pull, 20,000mi of heavy use. Never limped, never skipped a beat, never babied. I'm not sure any stock trans would have done better.

But maybe he got a Monday truck, dunno.

Pat

I saw your Ally ( I modifyed it duh):h ) My problem with the above troll is he complains about the same thing on different trucks and won't do anything about it. I bet he likes to beat his head against the wall cause it feels so good when he stops.:ro)
mike

Pat

I saw your Ally ( I modifyed it duh):h ) My problem with the above troll is he complains about the same thing on different trucks and won't do anything about it. I bet he likes to beat his head against the wall cause it feels so good when he stops.:ro)
mike
It does seem a tad odd.

threeman- i bet your dmax makes more torque than your old ford did.. stick a honda civic engine in front of the ally or even that old 350 gasser and you'll not limp it either.. its an unfar comparison.

if you really want to fix your alli, you can probably just opt for a transgo kit and a converter.. it will hold that 40hp predator no problem. i beat the heck out of my truck and my transgo and tts converter held up well. given you won't be doing anything like that, i'm sure it would be fine for you. its a less-expensive option to going with a tranny built for high-HP..

Mike I think you are on the money. I have towed my fiver all over the west with juice on level 2 and the tranny has performed just great. I have had some issues with the juice tossing an MIL light at odd times but no performance problems. My trailer with nothing in it but water and propane is about 12000#s and on the road it will come in at around 14000#s. Never a problem. The tranny is stock with a deep pan and transynd.
Nuff said. He's trolling.
Denny

Well I asked about limping transmissions with honesty. You guys however are a bunch of pecker heads for assuming someone is lying about what they post before actually being there to see it. The other transmission problems were leaks not at all related to limping. Still however tranny problems. One happened to be converter bolt problem when it first came about. The second was a bad flywheel or flexplate GM doesnt know which because they ended up changing both at the same time. This was after they swapped my truck for another. THIS truck is the third. It has real tranny problems. I wish I had not put the programmer in at all. I am sure the added 40hp and torque is the problem. I researched it alot at the time the programmer was bought for the second durmax that I have but I ended up using it on the 3500. Both of the others were 2500's. I also think that towing a 11,000lb trailer with one to three horses in the back (1000lb each) for 2 to 7 hrs non stop is going to play heck on any stock auto tranny. The truck limped the first time coming in from TX after 10 or 11 hrs non stop empty (11000). Again at the 40hp mark but this time it damaged the valve body, nuetral safety switch, and whatever the other switch was I cannot remember. It has done it again easier this time as I have found reading yesterday on various sites about limping allisons. MY OPINION is that the allison is not really as tough as they say it is. I also think a stock program pulling weight for several hours will result in the same thing. Heat is building up in the tranny. After that it starts slipping in a pinch. Especially with my #13 size foot running 70+ mph.

The reason I have posted the above message is to find out about limping tranny's and what other folks have done WITHOUT a smarta$$ assuming that I am lying. I am considering moving to a manual shift transmission. I am also considering moving to another make of truck. I am not going back to a FORD since driving an 03 6.0 while the 3500 was being repaired. Man what a piece of junk. It had major ford problems. Mainly ford computer problems.

I also did not buy a $40k truck to spend more on tranny upgrades. I will not put a programmer in anything else for sure. I quit modifing trucks several years ago when I quit working on the 86. I dont have time anymore for that type of thing. I also dont have time for a tranny to reset itself because it limped in.

You guys however are a bunch of pecker heads for assuming someone is lying about what they post before actually being there to see it.
Hey.........It's Mr Peckerhead to you....):h

What he said.:ro)

This is one of the jobs that my truck does (the other is hauling a 6 horse trailer for long road trips - 16, 18 hours). I have 45k with a stock Allison. I run synthetic oil, change the filter every oil change, and fluid every 25k. I have a TST box that I will sometimes run on level 1 hp and level 1 torque enhancement (yea, I know - on borrowed time. Hopefully Mike will get it in January for the upgrades). Never limped it, no problems. Maybe I'm lucky, maybe I'm careful.

threeman

I did not see anyone here call you a liar. You posted your problems and that is fine but, you choose to do nothing about them. I will help you, so will most of the guys here. We can give you answers and salutions.(sp) We can make suggestions that really work and make your Duramax the truck you expect it to be. You have to listen and stop *****ing. You put the program in the truck, you have the lead foot, not GM. You want help and answers? You got it, just leave your complaints at home.

mike

Even with "only" 40hp (and what, an extra 120+ ft-lbs of torque?), you are pushing the transmission beyond the range in which it was designed. The Allison was designed to last the warranty period, living behind a stock motor, pushing a rig around that weighs in at GCVW or less. Anything beyond a stock truck and GCVW, and all bets are off.

I also did not buy a $40k truck to spend more on tranny upgrades. Right. And GM didn't design a truck that was meant to handle your aftermarket parts either. Yank the programmer, keep the combined truck and trailer weight below the maximum, and you probably won't limp your trans anymore.

Right. And GM didn't design a truck that was meant to handle your aftermarket parts either. Yank the programmer, keep the combined truck and trailer weight below the maximum, and you probably won't limp your trans anymore.
Uhhhhhhhhhhh...................YEA......What he said.....:cool:

01 2500 HD W/ Juice/attiude set on 3 at all times, 55k. This truck plows and salts all winter at a weight of 10k +/-, then hauls around my 25' GN trailer which when loaded is 27,300 GCW and then for fun I haul around the "house" as shown below at 24k. We put over 7k miles on this year alone with the 5ver. Transhas the deep pan from Eric and syn trans fluid with filer change every 6k and internal twice now, 25k and 47k. And It was made on MONDAY. I just hope the 05 I ordered is just as good! I loaded a smaal picture for those on "dialup"

Yes I guess OMNI that the tranny will only last the 36k it had on the truck. Mike I was complaining because you guys thought I was trolling to stir crap. I was asking if others had this problem and what they did to fix it. I really dont like other trucks (ford or dodge) interiors so no I wont just run out and get one. I will yank the programmer actually its already been done.