Hello,
I am trying to add bluetooth to my 09 LS. I already have the steering wheel controls. I do not use Onstar so I am not concerned if I lose that functionality. Will part number 20842731 work in an 09? I know there are some differences in the CAN bus but I am not sure what they are. Any help is appreciated!
Thanks

 

not sure if this will help..but i swapped out my deck for a new one and it came with bluetooth built in it so i can pair up to 2 devices...just a suggestion

 

Did you have to purchase the additional harness for the door chimes? About how much did the setup cost you? Thanks!

 

update:
I found an actual 09 VCIM at a junk yard. I purchased it and will install soon. Hopefully it will work out. Finally I will have bluetooth for my phone in my car....

 

I used part # 20837492 which came in Cadillac STS,Solstice, Sky and '09 HHR. I got mine from Schrams Auto parts in Waterford Michigan, they are on ebay. I installed it in my '09 LS and it works great. I can't get my monthly updates from onstar because they think my car is a 2010 Cadillac STS but the bluetooth does work. I have used it for over 1 year already. The part # 20842731 fits 10-13 Camaro's, Lacrosse's, 11-13 Regals and 10-12 SRX. Not sure if it will work for the HHR.

 

I received my module and installed it last night. Works fine. In case anyone is interested in buying one, I found a web site that searches junk yards in your area for the part. Turns out it was MUCH cheaper than ebay. I paid $115 shipped and I probably could have got it for $100 if I went to the junk yards web site. Anyway, you can search for any part and they also describe the condition. Here is the web site:
http://www.car-part.com/