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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1702 (Data Link Communication System) >> Diagnostic Information and Procedures >> DTC U1000 and U1255: Operating Parameter Has Not Been Associated >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

At least 1 critical operating parameter has not been associated with an identification number within about 5 seconds after beginning serial data communication.

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