I had a serious problem with my 2007 Cadillac CTS (3.6 l). The red battery indicator, yellow engine indicator, AND "Service Vehicle Soon" came up. Battery, alternator, and starter were all fine, all lights come on, but the car would not even crank. Had it towed to ASAP Automotive. Dan & co. diagnosed it and fixed it (thank you!), and made it better than it was before the problem (God bless you!). It's not easy to find a fair and honest auto repair shop. I think I've found one.