Just to let you know, I have been in the process of trying to get Ceramic Brake pads for my STS due to the crappy brake dust the OEM pads leave. I have found out that my front calipers do not match up to any listing from 3 different manufactures. After doing extensive searching with Hawk Brakes, I have discovered that my STS apparently came with SRX front brake calipers instead of what is listed for the STS. So if you plan to upgrade your front pads in the furture and find the pads you bought for your STS does not fit, chances are you may have the SRX calipers also. :cookoo:

Man, you should know GM will share their products with other models..

Homework=kkkkkk