Hey all, I've just signed up to the site. Been lurking here for a while. I'm 15 years old and don't have much experience. My grandpa recently gave me a 2000 Silverado 1500 sport side with a 4l60e that's been throwing a P1870 code for a while now. I tried the Fitzall TCC valve cheat fix with no success. I'm thinking that the transmission is gonna need a total rebuild. I wanna do it right the first time, so if anybody can point me to a good transmission shop, that would be greatly appreciated!

Thanks! -Will