SILVERADO 2500 PICKUP 12 Communication; (OnStar, opt UE1), (center dash, behind radio), ID 22898335. SIERRA 2500 PICKUP 12 Communication; (OnStar, opt UE1), (center dash, behind radio), ID 22898335. YUKON 13-14 Communication; (OnStar, opt UE1), (center dash, behind radio), w/voice recognition (opt UPF).
