Thread: How Do I Retrieve Transmission Codes
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Old 03-20-2006, 03:16 PM
2000CAYukon 2000CAYukon is offline
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Re: How Do I Retrieve Transmission Codes
There is only one connector to read codes. Some scan tools only read generic codes and will not include "enhanced" codes (such as ones that the transmission will set).

Which scan tool did you use? Perhaps you can contact the scan tool company to see if they support trouble codes for your 4L80E.

//2000CAYukon
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