1992 GMC G2500. 1993 GMC G2500 Submodel: Extended Cargo Van; Engine: 4.3L V6; Position: Rear;. 1993 GMC G2500 Submodel: Extended Cargo Van; Engine: 5.0L V8; Position: Rear;. 1993 GMC G2500 Submodel: Extended Cargo Van; Engine: 5.7L V8; Position: Rear;.