Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1978 C15.
The 1978 GMC Truck C15 is defined by a sparse record of mechanical issues, featuring just one recall and a single owner complaint centered on the power train. This level of stability is evident when compared to the model's complaint history from 1990 to 1996. With reports for those later years ranging from a low of one complaint in 1991 to a high of 11 in 1995, the 1978 model year remains a highly consistent entry in the vehicle's history.
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 1978 GMC Truck C15 dominate in one area — the power train, 1 of 1 reports (100%), well ahead of the next concern. None of this vehicle's 1 recall campaigns target the power train, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the power train pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 1 complaints on record, top 1 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 1 of 1 campaigns on record for this vehicle.
THE NUT ON THE CARRIER SUPPORT BOLT ASSEMBLY MAY BREAK WHICH WOULD ALLOW THE ENTIRE WHEEL AND TIRE ASSEMBLY TO SEPARATE FROM THE VEHICLE. Remedy: DEALER WILL REPLACE THE TIRE AND WHEEL CARRIER BOLT ASSEMBLY AT NO CHARGE.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.