PAC RP3-GM11 GM Radio Replacement Interface - Compatible with Select GM Vehicles (Non On-Star) - Blue/Black - Upgrade Your Car Audio System for Enhanced Driving Experience

Works great. After minimal wiring, everything snapped right in place. I recommend to sync the unit after installation. Make sure the ignition is off and the driver door is open. Install the unit to the stereo and vehicle. Close the door and turn the ignition to the ACC position. Wait 30 seconds. Turn off the ignition and open the door. That's it. you should be good to go from this point forward.I've attempted the Metra and Scosche adapters in my 2005 Chevy Colorado with poor results. The Scocshe worked for a few years and slowly started to fail and eventually quit working altogether. I replace the Scosche with the same model and the radio still would not come on. The Metra worked sometimes. However, I had to constantly sync the system to get the radio to come on.