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2002 cad dts


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As barcyz01 says, check your OBD codes. A module checks for proper functioning of the doors in the A/C system and a code will probalby tell you which one isn't right.

A vaccum leak or a vacuum hose off under the hood is the most likely root cause.

-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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