Review on Dorman 924 134 GM Body Mount by Matt Larsen

Perfect for my new 2008 single cab body. Everything turned out fine, but it wasn't clear what the pucks were for. The truck's factory mounts didn't have them and when installed between the mount and the cab they made a very annoying noise so I took them off and now they are quiet. Also, they fit well. UPDATE: After two months all the rubber had compressed and all four mounts were loose and noisy. Felt every bump in the ground beneath my feet, heard all the clatter, drove me crazy. I've used Dorman before with no problems, but these mounts were disappointing. I went with a Prothane polyurethane kit which is much better. Or go to the OEM.