t1clarke Posted July 28, 2009 Report Share Posted July 28, 2009 We tried to read the codes with our OBD II code reader and the reader said it couldn't link with the car. It's a 2001 Deville DHS, does Cadillac take a special reader or something? Link to comment Share on other sites More sharing options...
BodybyFisher Posted July 28, 2009 Report Share Posted July 28, 2009 We tried to read the codes with our OBD II code reader and the reader said it couldn't link with the car. It's a 2001 Deville DHS, does Cadillac take a special reader or something? Welcome aboard You do not need a code reader with your Cadillac. Go to the top of this page, click HOW TO, then DTC CODES, then follow the directions on how to retrieve the codes for your YEAR... post them here and we can help you diagnose it, Mike Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Texas Jim Posted July 29, 2009 Report Share Posted July 29, 2009 Yep...what BodybyFisher said... Post the codes...we will try to help. Link to comment Share on other sites More sharing options...
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