stympyctlan

Sorry to hear you are going thru this as well. I am here in CT as well and ONeils in Avon has been taking care of me.

I am certainly happy to hear that the transmissions seem to settle down nicely after having some mileage put on them. Sorry to see other members are experiencing the same drip from the transmission that I did. I have 400 miles or so since my transmission replacement and so far I don't see any leaks. Keeping my fingers crossed. A issue that keeps popping up is my front passenger signal has an intermittent not functioning with the fast clicking on the dash. Repair shop got back to me today and said there is a tsb that came out a few weeks ago for this issue. Evidently it has to do with some sort of programming in the light. They have a new light on order and will be replacing the one I am having the intermittent issues with.

Good evening all. Just picked the truck back up this afternoon. They ended up doing the full transmission swap. Took a lot longer than I think it should have but I guess that's the ways things work out. Regardless I had a long conversation with the service manager and he says they really couldn't pinpoint exactly what the failure was because everything looked good by eye. Obviously the leak was only under pressure which is why I never say any puddles on the ground. I would certainly hope GM digs in and finds out where the leak was coming from.WWon't sure what year gm stopped installing dipsticks in these trucks but the refill process is rather tedious with these 10 speed allisons. I wad informed that the learning procedure for the new transmission will feel odd for the new few hundred miles and said to change up driving habits between town and highway Driving. There are some harsh shifts at slow speed and some what feels like being bumped from behind by another vehicle. I'll check back in a few weeks to let you all know how the shifting settles in.

Not the best picture but this is the inspection port at the front of the transmission adjacent to the oil pan.

I wouldn't really call it a leak more of a drip. Sitting still there was never any fluid on the ground that I could see. My thought is probably more sepage while traveling. So after a week of sitting at the dealer with the transmission removed from the truck, the dealer finally has authorization to replace the transmission with a new transmission. No rebuild no remanufactured. The truck has less than 1k miles. The service manager says he identified the seals and wanted to replace the torque converter and seal as well. He says there are no parts numbers available yet due to the year of the truck. He also stated that he would prefer a new transmission instead of new seals just because of the low mileage. The transmission will be shipped which takes about 5 days to CT so I'll be without my brand new truck for another week

Purchased new 24 2500 gas with the 10 speed allison. Just a bit over 800 miles and discovered a drip at the bellhousing inspection port. Found a TSB that pertained to the 2020 through 2022 with the exact issues I was experiencing. Took truck in for service a few days back and they uv checked to confirm the fluid in fact was transmission fluid which is now confirmed. Transmission has been pulled however I am being told that the seals they don't have part numbers for so they can't order them. They tell me the transmission in the gas truck is so new that they don't have the part numbers in the catalog in order to order them. The service manager has requested that chevrolet approve the install of a totally new transmission in order to get me back on the road. I hope this new transmission doesn't show up on the carfax report or else the truck will have a substantially deflated value.