Just had my timing chains (DTC P0008)replaced by Royal Cadillac of Tucson. 2008 STS 3.6L DI V6 @ 63,000 A 48hr turn around time, but a real
SOB with emissions testing. It was my crappy luck when I got the CEL and P0008 right when I needed to renew
plates. Much smoother idle, increased MPG, and less soot in exhaust pipes. Really a no hassle event with the
exception of emissions test. Drive cycle(s) extremely difficult to accomplish in a short amount of time. According to
GM, you might have to complete all of the drive cycle processes 5 times if the battery has been disconnected.