For Reference only:
2002 BRAVADA Elec Cont Unit (ECU); (LH eng)
2002 ENVOY Elec Cont Unit (ECU); (LH eng)
2002 ENVOY XL Elec Cont Unit (ECU); (LH eng)
2002 TRAILBLAZER Elec Cont Unit (ECU); (LH eng)
2002 TRAILBLAZER EXT Elec Cont Unit (ECU); (LH eng)
Please make sure item matches your car before you buy. All ecu/Engine computers/Airbag modules need to be reprogrammed in order to work properly. We are not responsible for labor costs.