Mike Beck
New member
Not my car, but a truck that belongs to a friends son, 2019 Silverado. 8 speed trans and feels like you are on rumble strips going down the highway, fucking GM. Drained the trans, couldn't get the pan off, another f-up from GM. Got most of the fluid out. Put 8 quarts in it, not that they give you a spot to fill it, and left a trans cooler line off to try and get a lot of the old fluid out. Put another 7 quarts in there and repeated the process, fluid looked very clean by now. Topped it off, put all the shit back together, and took it for a ride. No more shudder. That was $300 in Amsoil trans fluid!