Transmission operation....? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Transmission operation....?


nineD5wonton
06-04-2005, 09:58 PM
How does this thing shift. (4L80) 1,2,3, converter lock up, 4? Or does the converter lock up after shifting into 4th?

69camarox
06-04-2005, 10:04 PM
locks up in 3rd then unlocks shifts and locks up again

nineD5wonton
06-06-2005, 09:32 PM
ahhh.... I knew something went on after shifting into 3rd... I'd almost get a power surge when the converter locks up, then it shifts again. Thanx!