Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1978 C35.
The 1978 GMC Truck C35 is the focus of this overview, though the model’s documented complaint history does not extend to this model year and instead covers 1990 through 1996. Within that later window, complaints peaked at three in 1996 and bottomed out at two in 1994, a narrow spread that reflects the limited volume of reported issues recorded for the model line during that period. Because this 1978 model year falls entirely outside that reliability data set, its standing in the broader complaint history remains uncharted by those specific records, leaving researchers without documented issue trends for this particular vintage.
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Showing 2 of 2 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 LEFT AND RIGHT FRONT SUSPENSION CROSSMEMBER STRUT RODS, WHICH GIVE ADDED STRENGTH, MAY HAVE BEEN OMITTED DURING ASSEMBLY. CONSEQUENTLY, A FRAME CROSSMEMBER CRACK COULD EVENTUALLY DEVELOP AT THE FORWARD VERTICAL… Remedy: DEALER WILL INSTALL THE NECESSARY FRONT LEFT AND RIGHT RODS WITHOUT CHARGE TO OWNER.
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 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.