4L80/85E Transmissions. 6L90 Transmission
I have a 2005 silverado 2500hd with a 4l80e I believe 1st gear has some slippage issue. Sometimes when you come to a stop at a red light in drive and try to go it feels like the transmission is slipping for a second or two before actually grabbing 1st. If trying to power break for a launch you...