Hello my name is Drina, and I'm sorry for the long post!!! My husband Sean and I have an 05 Chevy Silverado 1500, with a brand new 408 Stroker LSA 6.2lt Motor, 4L80E 2WD transmission with LS supercharger. I've written this introduction 3X trying not to wright the whole long story. We've had a ton of problems since getting the truck back from the idiot who put it in. It has maybe 100miles on it. It has been sitting since October 2021. My current problem is the transmission wire connection plug harness is leaking. So we dropped the pan to push the inside harness back out to snap and seal, like we read to do. We also got a new O-ring and priced a new wire connection harness just in case. Anyway when we drained and dropped the pan the magnet was covered in black gunk like an oil slim, the bottom of the pan is cover in a thin layer of black stuff and the fluid came out the pretty pink it should be, but after sitting in the drain bucket it has a black oil looking residue forming at the top. There is no metal shaving that I could feel. I read some black or gray stuff is normal on the magnet. I've only ever dropped the pan on an Alison diesel transmission that was contaminated with water so it was Pepto bismol pink. There was no black stuff mixed in it. I don't think there should be any clutch dust or metal shavings or any contamination, the tranny is suppose to be brand new. I've included pictures. Also the inside harness wire connector is in tight, can't even push/pull it out. So does the whole inside wire connection harness need to be replaced, since it's leaking even though it's tight and clicked in place or is there a seal missing to the external harness that seals when plugged in? M
y questions are is this black sludge normal on a new 100mile driven 4l80E transmission fluid pan? And do I need a new wire connection harness since it's leaking, but its tight. Which harness is bad the internal or external? The pictures blow are: 1st Inside transmission after pan drop (it's dark out so the pics not to good, and idk you need to see this, but just in case. 2nd: Drained tranny fluid with black film like liquid after it's sat a few moments. 3rd: 8nside tranny pan with black stuff covering bottom of pan. 4th: The black stuff I cleaned off magnet and a swipe to the bottom of pan. 5th: External wire connection harness with tranny fluid dripping out of it. 6th: Outside of external harness covered in leaking tranny fluid. With two wires not connected. 7th: Inside wire connection harness.
y questions are is this black sludge normal on a new 100mile driven 4l80E transmission fluid pan? And do I need a new wire connection harness since it's leaking, but its tight. Which harness is bad the internal or external? The pictures blow are: 1st Inside transmission after pan drop (it's dark out so the pics not to good, and idk you need to see this, but just in case. 2nd: Drained tranny fluid with black film like liquid after it's sat a few moments. 3rd: 8nside tranny pan with black stuff covering bottom of pan. 4th: The black stuff I cleaned off magnet and a swipe to the bottom of pan. 5th: External wire connection harness with tranny fluid dripping out of it. 6th: Outside of external harness covered in leaking tranny fluid. With two wires not connected. 7th: Inside wire connection harness.
