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Home >> Chevrolet >> 2010 >> Avalanche RWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1821 >> Reference Information

Reference Information

Schematic Reference 

Connector End View Reference 

Component Connector End Views

Description and Operation 

Data Link Communications Description and Operation 

Electrical Information Reference 

Special Tools 

EL-48900  HEV Safety Kit