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P1680 GMC

P1680 GMC - Control Module Not Programmed

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Possible causes
- Engine Control Module (ECM) programm error
- Wrong Engine Control Module (ECM)
- Faulty Engine Control Module (ECM)
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Tech notes
This code means that there may be an internal problem with the Engine Control Module (ECM). Start by checking battery charge and connections. Try clearing the code and re test.
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Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1680 GMC Description
The Engine Control Module (ECM) program does not recognize the vehicles id, or the id is missing in the ECM.
GMC Technical Service Bulletins for P1680 code
2004 GMC ENVOY ENGINE AND ENGINE COOLING:ENGINE Details
2004 GMC ENVOY 061000 ENGINE AND ENGINE COOLING:ENGINE Details
2002 GMC ENVOY ELECTRICAL SYSTEM Details
2003 GMC ENVOY ELECTRICAL SYSTEM Details
2004 GMC ENVOY ELECTRICAL SYSTEM Details
2004 GMC ENVOY ELECTRICAL SYSTEM Details
2005 GMC ENVOY ELECTRICAL SYSTEM Details
2002 GMC ENVOY 110000 ELECTRICAL SYSTEM Details
2003 GMC ENVOY 110000 ELECTRICAL SYSTEM Details
2004 GMC ENVOY 110000 ELECTRICAL SYSTEM Details
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