A:Answer I was told by Best Buy sales person if my car had the OnStar red button on my rearview mirror, I would need to replace it with a $79.99 back up camera kit. My 2010 Enclave has a back up camera but with this radio and the kit the camera will come through the radio screen vs the mirror. He was honest and told me I'd lose my current stock camera function if I chose this radio. Since my stock camera doesn't have the parking guide lines and I've never liked it being in the mirror, I decided to buy the kit. On black Friday I saved $100 so the $79.99 kit made sense to buy.