I have a 2006 Trailblazer that I'm trying to put an after market radio in. Every one says I need a door chime harness. Is this required or is there other ways to get around it? Thanks
It is required. If you want things to work right. Alot goes through the radio its more than just the door chime. Its just How GM does it. Its not much if I remember right to get the module.
ya i have an 05 trailblazer... i got my indash kit and the gm adapter at crutchfield... model GMRC-01, its the cheaper version, it depends if you have bose or onstar. i dont, so i got the cheaper one without the onstar support.
the adapter keeps your door chimes and your switched 12v power...in other words.. if you turn your key off, your radio goes off and you cant use the "accessory" on your ignition for power