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Why is the service suspension system light coming on?
Because the computer that controls the system has registered a fault in the system, and it will need to be checked out.
WHAT HAPPEN U HAD IT CHECK OUT
Common Problems > Cadillac DeVille DTS
Q&A > Cadillac > 2005 Cadillac DeVille DTS
Q&A > Cadillac > 2003 Cadillac DeVille DTS