Ok the dumb@$$'es at chevrolame decided to change the wireharness for 07. I have a base LS and instead of the single 24-pin GM connector I have two smaller black connectors that don't fit the metra 70-2103 wire harness.
Does anyone know where I can get the correct wire harness? I'm coming up empty searching all the sites.

 

i dont know if this will help but it is what circuitcity said will fit


http://www.circuitcity.com/ssm/Speci...cation.do#tabs

 

Actually circuit city says that DOESN'T fit. Its also a 2-door coupe. Plus the picture doesn't look right at all. I have two black connectors, each about the size of that blue connector in the harness picture above.l

 

last time i checked the wireing is the same for 4 door and 2 doors but im not sure i know on my 03 cavalier 2 door and my friends 04 cavalier 4 door they were the same wireing harness but i dunno about the balts

 

Looks like this harness for an 07 Avalanche from ebay would be the correct harness. Scoshe lists the harness as TBA. I sent an e-mail to Metra about it. I can't find much online about this.

 

uhh... as far as i know there is no real harness for an 07 avalanche...

 

Metra wasn't a help, they don't know anything. All they want to do is sell me a $130 OnStar harness that wouldn't even have the right connectors. Idiots!
From what I can dig up, it looks like American International GM 2006-2007 Harness model GWH-406 is the harness the 07 guys need. We have the same radio as the avalanche/ion/vue.

Here's american international's application guide. Says its for non-Bose, non-OnStar radios
http://www.americaninternational.net...e_7-19-06s.pdf


And a picture:



Edit: I went ahead and purchased one from ebay for $11.58 shipped after verifiing with the seller they had them in stock. I will keep everyone updated on the progress.

 

Ok good news, bad senario.
Good News: the connectors on the GWH-406 do fit the 2007 wiring harness.
Bad News: the pin-out is different.

Good News: the pin-out could be changed to work with the 2007 if you don't break any of the pins in the process
Bad News: I don't feel like busting up the connector trying to change it. Plus the pin-out might be different than listed in Zinner's post and I don't feel like getting out the volt meter.

Also the 1988+ GM Antenna Adapter wouldnt plug into the factory antenna. There's a black, free-spinning plastic sheath around the OEM antenna connector. The whole antenna connector doesn't look compatible to the 88+ adapter.

Looks like GM completely f^cked things up for 2007. I have HATED GM ever since 2000-2001 when they came out with the stupid databus and now the GM-LAN. The engineer who came up with this idea needs shot in the F-in head. "Hey lets make the radio a vital part of the car!" what a freakin retared idea. I've done probably 30 radio installs in my lifetime and every GM one is a nightmare.

 

Yea Im in the same boat right now. I found some one who may be able to help me out though. I have the GM XM kit but dont have the right harness. If he gets me the right adapters I will let you know. He's in Toronto but he does ship using paypal.

 

According to crutchfield, the HHR needs a Chrysler antenna adapter. WTF? From the pics I can find on ebay, that is the adapter we need for the 2007 radio. Why the hell did they switch to a chrysler-style antenna??

This looks exactly like the connector on the radio:

 

yes i have just started tearing my dash apart and wroking on the radio. I purchased the single plug wire harness and noticed i need a double -plug.

has anyone got this to work? and what is the antenna adapter for the 07? I purchased this one:
http://www.crutchfield.com/S-BiL7U2m...10&i=12040GM10

and it did not fit.

so i got this one instead, for free from crutchfield. its on its way.

http://www.crutchfield.com/S-BiL7U2m...sp?I=12040CR10

i hope this one fits. cuz i like to listen to coast2coast am when i get out of work at night.
even though i never used to listen to the radio in my old car, and never had it hooked up.. lol

 

You need a chrysler antenna adapter as I stated above. So far I've found no harness for the 07s. I'm just using the aux port with a small 1GB MP3 player and its working out ok for now.

 

Ya well my problem is, I have subs to hook up, and I cant because there are no RCA outputs on the stock headunit. I did find a wire harness on ebay for an HHR that i Think will fit.

What do you think?

http://cgi.ebay.com/2006-2007-AVALAN...QQcmdZViewItem

think it will fit?