DADDYMACK BURNS Posted November 28, 2014 Report Share Posted November 28, 2014 My heat vents will not open , blower is fine, but when I turn it on I don't hear that click opening the vents, could it be a fuse? or what? Please help themoose680 Link to comment Share on other sites More sharing options...
barczy01 Posted November 28, 2014 Report Share Posted November 28, 2014 Have you checked for codes? Link to comment Share on other sites More sharing options...
Cadillac Jim Posted November 28, 2014 Report Share Posted November 28, 2014 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. Link to comment Share on other sites More sharing options...
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