Chassis ECM Communication Classic Style Fits 04-07 SIERRA 1500 PICKUP 339783

AVALANCHE 1500 04-06 Communication; (OnStar, opt UE1), (RH dash). CTS 07 Communication; (OnStar, opt UE1), (RH trunk), ID 15952341. CTS 07 Communication; (OnStar, opt UE1), (RH trunk), ID 89047018. SAVANA 1500 VAN 05 Communication; (OnStar, opt UE1), (LH dash).