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Discussion Starter · #1 ·
is there any way to get my 94 OBD1 to learn TDC without a tech-1 scan tool.
 

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You can try the method listed in the FAQ's for the OBD2 trucks, my origanal ECM would do a re-learn that way but my new ECM wouldn't. Why do you need to reset it?
 

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Discussion Starter · #3 ·
changed the fsd this weekend still getting a code 35.did not realize Gm didn't give me a new resistor in the fsd started the truck with no resistor in it i have since put it back in but still cannot get rid of the 35 code
 
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