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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1654 (Data Link Communication System) >> Diagnostic Information and Procedures >> DTC U1000 and U1255: Critical 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 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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

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