i owned a 2008 cadilac DTS. What a piece of garbage it was, Now i have Toyotas and Honda. I also have a 2001 ford with the triton V* but I run Amsoil throuh its small oil channels, I'm never buying a GM anything ever again. Not even the stock,
the best thing to do is not buy their crummy overpriced vehicles. I email some GM employee looking for computer programmers that GM Should concentrate on making quality vehicles and not waste peoples time hireing for MIS jobs.