I'm installing a Pioneer FH-X700BT in my 2007 Silverado Crew Cab, with OnStar, withOUT Bose and am using a Scosche GM21SR for integration

I have got everything hooked up, double and triple checked all connections but I am still having problems.


The head unit powers on just fine, but I can only get sound out of the Front left, rear left, and right front tweeter only.

I get no sound from rear right or front right door woofer.

I have no idea what I'm missing here. Like I said, all connections are tight and right. I tried moving the connectors to the "Bose" ports but that didn't make any difference.

I have tried with remote amp wire connected, disconnected, and connected to a fused always on power source and no difference, but I am pretty sure I do not have a factory amp.

Any suggestions for what I am doing wrong here?

 

Its the Scosche GM21SR , read the instructions unplug it and start over turn on the ignition for about 10 seconds turn it off and try again turn on the radio the second tie

sometimes it takes a few minutes to work

instructions