Three problems related to check engine light on have been reported for the 2006 Cadillac STS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Cadillac STS based on all problems reported for the 2006 STS.
Tl- the contact owns a 2006 caddalac Sts. The contact stated the vehicle's check engine light was constantly illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the engine had 8 misfires and the icm needed to be replaced. The vehicle was repaired however the failure recurred. The manufacturer was notified of the failure. The approximate failure mileage was 96,000. Kh.
Catalytic converter failed at approximately 83,000 miles. Check engine light comes on and the manufacturer and the dealer replaced the converter. At 93,000 miles, received check engine light warning again and the code indicates that the catalytic converter is a problem. The side affect is that the car lacks power when having a need accelerate. Gm has recalled the 2005 converter, but not the 2006.
2006 Cadillac cts - check engine light has been on for 2 years; car has been stalling and/or failing to start when weather is called since March, 2007.