I have 04 Silverado and ever since I used My Diablo tuner on my truck after installed an aftermarket radio and interface module I've had problems with the radio intermittently shutting off after the truck has been running for a few seconds. I couldn't get the Diablo to work until I pulled the fuses to the radio. Then it worked but ever since I've had this intermittent problem. I'm not exactly sure what to do other than chuck the interface and just hook up a regular wiring harness adapter.