About DTD

What is DataTagDecoder.Com?

DataTagDecoder.Com is a unique site that provides the ability for the classic car collector and enthusiasts to decode cowl tags on most General Motors vehicles (except trucks) from 1964 - 1972. 
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Announcements Page

FEB 14, 2022 - Buick Paint and Accessory Codes Paint Code Corrections and Additional Accessory Codes Added for Buick
DEC 20, 2021 - Added Body Color and Interior Codes Added Body Color and Interior Codes for Oldsmobile
SEP 26, 2021 - Cadillac Paint Codes Added Cadillac Upper and Lower Paint and Top Color Code for 64-67
SEP 19, 2021 - Cadillac ACC Codes ACC Code corrections and duplicate removal
SEP 8-12, 2021 - Added Codes Major Code Updates for All GM Divisions
SEP 6, 2021 - Added Codes Added Accessory Codes for Cadillac and Pontiac
JUL 27, 2021 - Added Codes Added codes for Buick.
JUL 22, 2021 - Minor page tweaks and performance updates Improved page and site performance changes.
JUL 15, 2021 - Added RPO Codes for Oldsmobile Added several "W" Engine Codes.
JUL 15, 2021 - Our RPO Decoder is available as a Beta Version Try it out and tell us what you think. You can read about it by clicking here.
JUL 9, 2021 - Updated Links Page Added a number of Owner and Forum Links
JUL 2, 2021 - DataTagDecoder.Com Relaunch After an unplanned absense we're back!  We've also included a new GM RPO Decoder.  Check us out and tell us what you think!