I would like to upgrade the HU in my 04 GMC. it has factory Bose system with XM, On Star and wheel controls. I would like to keep my On Star and steering wheel controls. I really like to get a Pioneer DVD/Nav system, but i need to keep my On Star and wheel controls.

 

there is a special plug you have to buy to keep ur on-star and wheels functions its around 200 bucks ill look on ebay and see if i can find you a link

 

thanks man!!!

 

PM sent...

 

thanks for the PM. not ready quite yet, but I also need to control the wheel too.

 

JL Audio make a thing called a clean sweep but i dont know if it does steering wheel controls too.

 

check out a company named PAC. I don't have onstar, but I have xm/bose system/redundant steering wheel controls. I bought their SWI-X module which retains all the stock buttons. You have to program it, but it's simple and the memory is non-volatile so if the battery disconnects the settings won't get erased.

Here's the website, they're worth every penny and the tech support is great

http://www.pac-audio.com/default.asp

I bought my module for 40 bux shipped on eBay

 

there ya go...
http://www.pac-audio.com/databusVehi...sp?mmSearch=39

http://cgi.ebay.com/PAC-OS-2BOSE-ONS...QQcmdZViewItem

only 100 bux

 

I have never used PAC but Perfireal (sp) the harness to connect everything together will interface with onstar just make shure to get the right one. and as far as the steering wheel controls go worked for about a week and then all of a sudden out of the blue volume would just shoot full blast tried everything and still couldnt get it to work so idk about that.