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Model Years Affected: 2006, 2007, 2008
The EGR valve may stick open, causing a rough idle and/or the Check Engine Light to illuminate.
The issue is when at traffic light in therror rear of the car there three knocks as if the car is trayin to stall.
Q&A > Cadillac > 2006 Cadillac DTS
Q&A > Cadillac > 2008 Cadillac DTS
Q&A > Cadillac > 2007 Cadillac DTS
Common Problems > Cadillac DTS