2009 Cadillac STS Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2009 Cadillac STS
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2009 Cadillac STS ProblemsCheck Engine Light Due to Loose or Worn Gas Cap
A loose or worn gas cap could be cause the Check Engine Light to illuminate.
The front turn signal and and daytime running light bulbs are prone to premature failure. Our technicians tell us that these bulbs can be very difficult to replace.
Vehicles with certain V6 engines may illuminate the Check Engine Light one or more of the following codes: P0011, P0014, P0021, P0024, P0341, P0346, P0336, or P0391. Our technicians tell us that some vehicles may require a powertrain control module (PCM) software update to correct this issue. Other vehicles may have excess camshaft end play on one or both cylinder heads which will need to be corrected using special procedures outlined by GM.
2009 Cadillac STS QuestionsMy driver side door wont open when press to unlock from outside (1 answer)
Works from inside but not outside. Can't open door from outside.