OER Parts offers a wide selection of Dash Components for your 1956 GMC Truck. OER Parts offers 1956 GMC Truck Clusters, 1956 GMC Truck Instrument Cluster Case, 1956 GMC Truck L.E.D. Indicator Wiring Set, 1956 GMC Truck Instrument Cluster LED Upgrade Set, 1956 GMC Truck Cluster Assembly, 1956 GMC Truck Dash Instrument Bulb Socket , 1956 GMC Truck Digital Instrument Cluster, 1956 GMC Truck Instrument Cluster Seal Kit, and 1956 GMC Truck Instrument Gauge Decals.