Copey
New member
I have a 2023 AT4HD. At 16,500 miles I took it in for possible transmission leak. The dealership had the truck for 2.5 weeks and replaced a seal they said was bad. At 18,500 miles the leak returned. I mentioned reading this forum and when they couldn’t find the leak they put in a case to GM. I will have to take the truck back in once the parts arrive, they plan to replace the front cover & torque converter for possible porosity. So I will see how that goes. The dealership has been great, just not confident about the upcoming repair.
