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OBD II Reader


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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

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