2005 cobalt OEM amp?

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=75143
Printed Date: May 16, 2024 at 2:42 AM

Topic: 2005 cobalt OEM amp?

Posted By: Simplemitch
Subject: 2005 cobalt OEM amp?
Date Posted: March 26, 2006 at 6:46 PM

Tried to put a Pioneer 8600 into an '05 Cobalt. I used a "spare" fuse socket rated at 20 amps (according o the vehicles manual) and was also installing a PAC steering wheel interface. (gnd to gnd, 12 v switched to 12v switched, interface wire to the Cobalts darkblue (pin a9 i blieve) and then tied the WHITE/ black to 12 v switched per the instructions). Radio wouldn't power up and i found that the constant 12 had no juice. Spliced on to the RED / white 14 gauge at the fuse box for a more reliable source. Radio worked for about 30 seconds and then lost audio. I turned the car off and back on for giggles and audio came back on for about 10 seconds then no audio again. What made it really odd is that the aftermarket amp and subs lostaudio too!. I was guessing the factoryamp was shutting down but.....i dunno. ..AND THEN..... the keless entry doesnt work now. NIGHTMARE!!!! Fuses all seem ok.

Any guesses?

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Mitchell Whitney, Installer/technician
Mainstreet A/V

Replies:

Posted By: zfactor2004
Date Posted: March 27, 2006 at 6:40 AM

i would first disconnect the pac adapter... then give me a list of your connections behind the radio..the amp needs to be turned on via the decks remote wire... the ion/cobalt requires some of the plugs available to be re-pinned. these cars are very fussy about where the power is taken from as well... you should be ok with the fuse box though. get me a list and ill sort it out for you.. i do a lot of the oem work here for chevy / saturn...

Posted By: Simplemitch
Date Posted: March 27, 2006 at 8:10 AM

I'm using an American International GWH-404 harness (for Malibu & Equinox....per A.I.) But I am having him come back in today so I will have a complete color-to-color chart for you by later tonight.

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Mitchell Whitney, Installer/technician
Mainstreet A/V

Posted By: Simplemitch
Date Posted: March 27, 2006 at 10:57 AM

BTW... What wire DOES need to be powered for the factory amp and is it 12 volts?

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Mitchell Whitney, Installer/technician
Mainstreet A/V

Posted By: Simplemitch
Date Posted: March 27, 2006 at 9:18 PM

the kid can't come in til friday..... i'll update ya then.

I was thinking though.... the only way I could lose audio in the OEM amp AND the aftermarket is if the remote output was faltering.... will have to wait to see.

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Mitchell Whitney, Installer/technician
Mainstreet A/V