For Reference Only: AZTEK 04 Communication; (OnStar, opt UE1), (RH dash), ID 10394074 AZTEK 04 Communication; (OnStar, opt UE1), (RH dash), ID 15795953 AZTEK 05 Communication; (OnStar, opt UE1), (RH dash) BRAVADA 02 Communication; (OnStar, opt UE1) BRAVADA 04 Communication; (OnStar, opt UE1) DEVILLE 05 Communication; (OnStar, opt UE1) ENVOY 02 Communication; (OnStar, opt UE1) ENVOY 04 Communication; (OnStar, opt UE1) ENVOY 05 Communication; (OnStar, opt UE1), ID 15795953 ENVOY 05 Communication; (OnStar, opt UE1), ID 19115774 ENVOY 06 Communication; (OnStar, opt UE1) ENVOY XL 02 Communication; (OnStar, opt UE1) ENVOY XL 04 Communication; (OnStar, opt UE1) ENVOY XL 05 Communication; (OnStar, opt UE1), ID 15795953 ENVOY XL 05 Communication; (OnStar, opt UE1), ID 19115774 ENVOY XL 06 Communication; (OnStar, opt UE1) ENVOY XUV 04 Communication; (OnStar, opt UE1) ENVOY XUV 05 Communication; (OnStar, opt UE1), ID 15795953 ENVOY XUV 05 Communication; (OnStar, opt UE1), ID 19115774 ION 05-07 Communication; (OnStar, opt UE1) MONTANA 05-06 Communication; (OnStar, opt UE1) RAINIER 04 Communication; (OnStar, opt UE1) RAINIER 05 Communication; (OnStar, opt UE1), ID 10394074 RAINIER 05 Communication; (OnStar, opt UE1), ID 15795953 RAINIER 05 Communication; (OnStar, opt UE1), ID 19115774 RAINIER 06 Communication; (OnStar, opt UE1) RELAY 05-06 Communication; (OnStar, opt UE1) RENDEZVOUS 04 Communication; (OnStar, opt UE1), (RH dash), ID 10394074 RENDEZVOUS 04 Communication; (OnStar, opt UE1), (RH dash), ID 15795953 RENDEZVOUS 04 Communication; (OnStar, opt UE1), (RH dash), ID 19115774 RENDEZVOUS 05-06 Communication; (OnStar, opt UE1), (RH dash) SATURN L SERIES 02-03 Communication; OnStar, Sdn TERRAZA 05-06 Communication; (OnStar, opt UE1) TRAILBLAZER 02 Communication; (OnStar, opt UE1) TRAILBLAZER 04 Communication; (OnStar, opt UE1) TRAILBLAZER 05 Communication; (OnStar, opt UE1), ID 15795953 TRAILBLAZER 05 Communication; (OnStar, opt UE1), ID 19115774 TRAILBLAZER 06 Communication; (OnStar, opt UE1) TRAILBLAZER EXT 02 Communication; (OnStar, opt UE1) TRAILBLAZER EXT 04 Communication; (OnStar, opt UE1) TRAILBLAZER EXT 05 Communication; (OnStar, opt UE1), ID 15795953 TRAILBLAZER EXT 05 Communication; (OnStar, opt UE1), ID 19115774 TRAILBLAZER EXT 06 Communication; (OnStar, opt UE1) UPLANDER 05-06 Communication; (OnStar, opt UE1) XLR 06 Communication; (OnStar, opt UE1) Please make sure to match the part number of the item with the one you have. All computers have to be reprogrammed through dealership. We do not provide reprogramming service. We are also not responsible for any kind of labor cost or reprogramming cost