Upgrade your vehicle's sound system with an aftermarket radio while retaining full OnStar functionality with this Metra replacement interface harness that is designed for use with select nonamplified GM vehicles that use the GMLAN data bus system.

Axxess - Replacement Interface for Select Nonamplified GM Vehicles - Black

$119.99

Upgrade your vehicle's sound system with an aftermarket radio while retaining full OnStar functionality with this Metra replacement interface harness that is designed for use with select nonamplified GM vehicles that use the GMLAN data bus system.