Cadillac STS Forum - 2005 through 2010Forum for discussions regarding the new Sigma-based STS model. Not for Cadillac "Seville" discussions (2004 and older).
Has anyone replaced their trans fluid yet? I know there is no dipstick on the 2005 sts. also GM released a new trans fluid a type V1 that is now suppose to be used.
Short story, drain fluid, measure fluid that came out, pump exact amount of fluid back in. ( I made my own T40 tool to get the fill plug out on the V8 )