My friend and I was working on finding the noise in the 2002 Envoy. We was looking at the rear brakes. The backing plates are just about gone one side and basically gone on the other side. I found a good number posts talking about this as a common issue. The only issue is the parking brake. I could not find enough info on it. I was wondering if this backing plate is gone, will the parking brake still work or not. If not, is there like an aftermarket parking brake that will work. We even thought about cutting the backing plate in half and sliding them in, but not sure if the bolts can be removed easily without having issues. We don't feel like taking the rear end apart mainly. We park on hills at times here and still need it working.