2012 Colorado Wiring Diagram Onstar. Posted by Diagram Onstar (Author) 2025-01-21 2012 Colorado Wiring Diagram Onstar. 2012 Colorado Wiring Diagram Onstar. I Have A 2007 Colorado With An Onstar Mirror With Courtesy.. How do I get a wiring diagram with radio components. Looking for XM antenna to radio probably thru the onstar unit with blue tooth. I am trying to figure. in this thread in this sub-forum in the entire site. Advanced Search. 2012 wiring diagram. Jump to Latest
You don't need the rap mod for onstar. He's redone his own wiring to make things work. Look at the PDF I posted above. page 6 has the proper wiring diagram. 1) From the radio to the metra module, you connect the 14 pin harness matching the color options as shown.. vehicles wiring harnesses. TESTING THE GMOS-11 1. Reconnect the negative battery terminal. 2. Turn the ignition on if not already, and then turn the radio on to verify that the radio works. Check the balance and fader control of the radio for proper operation. 3. Push the Onstar button (if so equipped) to verify Onstar is working.