For GMC Sierra 2500 HD Communication Interface Module Retainer Dorman 21172HVVW

For GMC Sierra 2500 Communication Interface Module Retainer Dorman 42233VMJX

For GMC Sierra 2500 Communication Interface Module Retainer Dorman 62267WVTV

For GMC Sierra 2500 HD Communication Interface Module Retainer Dorman 56762XTZJ

For GMC Sierra 2500 HD Communication Interface Module Retainer Dorman 93827TQQN

For GMC Sierra 2500 Communication Interface Module Retainer Dorman 94129QK

For GMC Sierra 2500 Communication Interface Module Retainer Dorman 61662ZJ