gmos 01 no switched power

I'm installing a Pioneer AVIC F90BT with the hardware bypass into a 2007 Chevy Trailblazer (Onstar/non-Bose). I finished the hook-up, but the head unit wouldn't power up. Both Onstar and the door chimes worked, so I checked the power. There is no switched power from the GMOS module to the stereo - I checked with a multimeter to my ground wire. I've triple-checked the wires, and everything appears to be hooked-up correctly. I'm guessing the module is bad - are there any other ideas as to what I may be doing wrong?

if you can, try a new GMOS-01 but if that is not an option, run a new wire to the orange or brown accessory wire at the keyswitch. you will lose the function that keeps the radio on until a door is opened but thats it.

We'v had alot of those modules be bad out of the box. I agree with soudnsecurity's sugestion on either running a new switched power or if you change the module id use the PAC version. They seem to be much better quality with a lower failure rate.mobile security specialist

mecp certified installer

self certified smartass

yeah i hate those GMOS adapters too.

hey if u still need retained accessory power let me know it will keep the factory feature and it simple to doWHO NEEDS M.E.C.P ITS JUST A CERTIFICATE,OH AND I GOT THE SKILL TO PROVE THAT I DONT NEED ONE~XxX12vStunnaXxX~    X-Mobile Solutions