OER Parts offers a wide selection of Dash Components for your 1988 GMC Truck. OER Parts offers 1988 GMC Truck Clusters, 1988 GMC Truck Instrument Cluster Case, 1988 GMC Truck L.E.D. Indicator Wiring Set, 1988 GMC Truck Instrument Cluster LED Upgrade Set, 1988 GMC Truck Cluster Assembly, 1988 GMC Truck Dash Instrument Bulb Socket , 1988 GMC Truck Digital Instrument Cluster, 1988 GMC Truck Instrument Cluster Seal Kit, and 1988 GMC Truck Instrument Gauge Decals.