gmos 01 no switched power
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=110717
Printed Date: June 11, 2024 at 1:30 PM
Topic: gmos 01 no switched power
Posted By: hookemdevils22
Subject: gmos 01 no switched power
Date Posted: January 16, 2009 at 3:10 PM
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?
Replies:
Posted By: soundnsecurity
Date Posted: January 16, 2009 at 3:26 PM
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.
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Posted By: donvito08
Date Posted: January 17, 2009 at 12:09 AM
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.
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MOBILE SECURITY SPECIALIST
MECP CERTIFIED INSTALLER
SELF CERTIFIED SMARTASS
Posted By: hookemdevils22
Date Posted: January 17, 2009 at 12:57 PM
This is the second module I have tried. The first kept cycling and making a popping sound through the speaker, as if it were trying to chime. Instead of waiting for a new one, I'm going to go ahead and wire the radio to the switched source. I'm not happy with the quality of the product, but thanks for your help.
Posted By: soundnsecurity
Date Posted: January 18, 2009 at 11:18 AM
yeah i hate those GMOS adapters too.
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Posted By: 12vstunna
Date Posted: January 18, 2009 at 1:37 PM
hey if u still need retained accessory power let me know it will keep the factory feature and it simple to do
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