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Home >> Cadillac >> 2009 >> Escalade Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1821 >> Repair Procedures

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

GMLAN Wiring Repairs
Control Module References for module replacement, setup, and programming

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