4l60e Transmission Shifts Hard From 1st To 2nd - To access the tcc regulator valve, the 4l60e transmission unfortunately needs to be taken apart. However, replacing the tcc regulator valve should solve that hard shifting. Some owners report being unable to shift from first to second when in drive or shift into reverse or overdrive gears. Other symptoms include slipping gears and grinding noises. I rebuilt my transmission and followed the book. It does lung when doing it. Modifying your 4l60e transmissionโs valve body can enhance shift performance and extend transmission life but comes with risks such as installation mishaps, a poorly tuned. Op's truck continuously shifts between first and second when driving at slow speeds until he either lets off gas or gives it more throttle. Mine downshifts to first after coasting in. I've changed transmission fluid which also helped a bit for about 2 months, then back to the hard shifting. Usually if i step on the gas it shifts smoothly, and like you mentioned. It's not even consistent, sometimes i can go extremely gentle on the. Park to drive or reverse is hard engagement (clunk)on level ground. But if i go to 1st gear in stead of reverse or drive its smooth. What do you think ? Fluid is new it has new. When your 4l60e transmission fails to shift out of 1st gear, there are a few common signs to look out for: Your vehicle may take a longer time to switch from 1st. The real culprit is the tcc. They come with plastic pistons.
To access the tcc regulator valve, the 4l60e transmission unfortunately needs to be taken apart. However, replacing the tcc regulator valve should solve that hard shifting. Some owners report being unable to shift from first to second when in drive or shift into reverse or overdrive gears. Other symptoms include slipping gears and grinding noises. I rebuilt my transmission and followed the book.