be patient with me because i don't know a lot ! my 2003 chevy duramax 2500hd has been a great truck but late last year i was driving and my truck went to shift and the transmission "popped" and lost all the fluid so wouldn't shift. pulled over and noticed the dipstick tube was forced out so all...

I have a 2008 chev 2500HD and getting the P0658 code. First time yesterday. Cleared code and it ran fine for 80 miles, now it's stuck in 1st gear. When shifting to D or R, the transmission jolts. Any thoughts? Sounds very similar to your issue you had. Did you have any more issues after fixing...

Hey guys. Been working on a 2010 Chevy Duramax HD. Allison 6 speed. Ive replaced both Trim solenoids, and all shift solenoids. New Filters, new pressure switch assembly. Yet i am still getting a code p0877, Which says is a low voltage problem. Ive traced wires, replaced the internal harness, and...

2014 Chevy Silverado 2500 HD 6.6 l diesel allision transmission . Had something put hole in radiator changed it on side of road ,coolant level low came on but engine temp level didn't get hot (210 deg ) .now home I'm noticing a clang when I step on gas harder at about 45 mph does not do if...

Howdy all. LBZ with Alli 1000 and 263xhd Tcase Having the codes for improper gear ratio for both 6th and 5th, 4th almost feels like it could happen there too. I'm getting the common 'transmission bump' now. It seems improbable to conclude those clutch packs are done... When driving it'll drop...

Hey, im looking to buy an 08 2500HD silverado, i found one for a good price but it needs a transmission. The current transmission is a automatic but i was wondering if it would be possible to manual swap it if i bought it. i dont know if chevy even offered a manual in 08 but i thought about...

So I’ve been having this issues for over a year now. Last year a trans fluid line blew and made The tranny slip with no fluid in it, good thing it happened a block from my house. After I fixed it up and re filled it she worked fine for few weeks then it started to get stuck into gear i believe...

Hey guys, looking for some advice on my truck. It is a 06 duramax lbz all stock with the allison automatic 186k miles. Yesterday driving my truck home from work I noticed my truck was shifting later than usual, and at some speeds(right around 32-45) didn't want to shift up into the higher gear...

I just did a fluid, internal filter, external spin on filter, and pan gasket change. When I finished I looked at the old internal filter and realized there was no seal on it, which means it separated and stuck in the hole and I just jammed the new filter with its gasket into the old gasket. I’ve...

I was leaving Taco Bell on Friday, and when I shifted from park to drive, there was a delay, clunk, then immediately “GEAR 4” is displayed on my monitor. I pulled over and ran codes, and saw TCM. I tried clearing them and shut the truck off. Started back up, drove maybe 2ft and then clunk! 4th...

Hello everyone, i was driving home this morning from work, and i was going up a decently steep hill. i was accelerating pretty hard before i heard a noise and then my truck kinda jerked a little, then my rpms dropped, then started increasing but my transmission wasn’t shifting right away, then i...

I recently bought an 05 LLY with 250k, owned for about two weeks and I noticed puddles of dexron near the driver side front tire. The strangest part is that it’s not an everyday occurrence. Some days it leaks, some days it doesn’t. Sometimes it’s a decent sized puddle, sometimes it’s a few...

Had this 02 since it was new. It’s got 96,000 miles on it. Mostly pulling hard with hay out of the hay field . Got hot while pulling a 30’ flatbed with 70 hp tractor on it on the highway . Was jerking and it was stuck in high gear . Didn’t check tranny temp . Mechanic reset it and changed...

Codes pulled via CTS2: P0088 P0089 P0700 U0106 P0307 P0463 P1093 2004 LLY. Truck doesn’t have a past with me unfortunately. Bought at auction. Truck displays service 4 wheel drive, and water in fuel. Only thing I’m concerned with is the trans right now. Truck goes into drive and reverse very...

2014 chevy silverado 3500 HD 6.6L Duramax / 6 speed Allison... While getting some brake work done, I was thinking of having the transmission flushed. But the mechanic told me that if it's never been done before, I could have a blown transmission within a week. I guess a flush would clean all...

i have a ppe hot race tuner for my 2007.5 lmm. how much power can the stock transmission handle. id like to tune it to level 3 which is 160hp seting. will this cause any problems? also with a 4 in mbrp dp back no muffler and cat and tuned at 90 hp no black smoke out the back...what gives?

So This is my first post been readin forums here since I invested in a new to me 2007.5 Silverado 3500HD LTZ. it's got just shy of 150K miles on it and since I don't know much of its history I am trying to get all the major maintenance items done before winter.:shock It's my first duramax and...

Ok, 2003 GMC D/A...on the dash it shows D 3 2 1, but I have counted the shifts many times now and it shifts 5 times. The last shift is at about 55mph and 2k rpms. Also 2nd and 3rd are really close. Is it possible someone has swapped it? How can I tell? Thanks in advance

:confused:Gents- Recently "replaced" the DPF with a nice little piece from diamond eye. Used a thumb stick(?) "DPF-R 4.0" did the reprogram to eliminate regen.... Now, I have a horrible almost scary hestitation almost slipping feeling at 1/4 throttle, through all gears. if I roll into WOT I...

I need help. My 2001 2500 HD has this weird problem and is getting worse. When I stop at a light and 15 seconds later it feels like someone drove into my back bumper,a really strong loud clunk. Also when I roll through a turn and I step on the gas its like in neutral and when the revs come down...