Hi all!
I joined this forum today just so I could ask this question. I've been searching the internet for a while and haven't found anything so hopefully you guys can help.
I am wanting to install a new head unit (pioneer) in my 2008 Grand Prix. I have steering wheel controls, but no OnStar or Monsoon system. I've been searching high and low for a wire harness adapter to keep the factory wire harness in tact. Most of what I find is about $80 worth of an adapter for OnStar, which I don't need! Buttt..... I have found a couple kits on eBay.
Both these kits have dash mounting kits and antenna adapters included.
One kit has a simple wire harness adapter that only supports the audio coming from the radio. No warning chimes, no OnStar, no BS. $20
The other kit has a simple wire harness adapter AND an interface for warning chimes. Again, no OnStar. $60
So my biggest question is, what warning chimes run through the radio? Just OnStar chimes or everything? Because if the chimes aren't a big deal, Ill go with the cheaper unit. But if "warning chimes" means door, seatbelt, CEL chimes, etc., then ill get the more expensive one (because I want those features).
Can anyone shed some light on this situation for me? Sorry for the long post, I just don't know what else to do! Any help is appreciated!