Cadillac STS owners have reported 2 problems related to engine clicking and tapping noises (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Cadillac STS based on all problems reported for the STS.
The car spark plugs keep going out and the car is make a clicking noise it is silender 1 and 3.
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all problems of the 2006 Cadillac STS
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The catalytic converter makes loud popping noises on passenger front side. Now is misfiring in cylinder 1 and also has unexpected gained speed without any gas peddle pushed. Gm extended the catalytic converter warranty to 200,000 miles due to converter problems. But my VIN they say isnt included. My car is a v6. My sister was the previous owner she said she never received any recall information. The website shows no open recalls but the work wasn't completed since she purchased in 2007. Gm website doesnt help at all.
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all problems of the 2005 Cadillac STS
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