Scosche GM2000SW or PAC RP5-GM11
 

Which one or will both work --.Scosche GM2000SW or PAC RP5-GM11? 2005 with Bose and Onstar (but disabled) so really only Bose. The Scosche is about $30 bucks and PAC is around $90.

Thanks,
719c6

The PAC RP5-GM11 is by far the most commonly used one. You might also consider doing the steering wheel swap while your at it so you'll also have steering wheel controls, did it to my 05 and it works great. If you get the SXV300 XM tuner, I can send you some instructions on how to reuse the stock XM antenna also if you're interested.