THE NUT ON THE CARRIER SUPPORT BOLT ASSEMBLY MAY BREAK WHICH WOULD ALLOW THE ENTIRE WHEEL AND TIRE ASSEMBLY TO SEPARATE FROM THE VEHICLE.
DEALER WILL REPLACE THE TIRE AND WHEEL CARRIER BOLT ASSEMBLY AT NO CHARGE.
The 1978 GMC C15 has 1 NHTSA recall campaign affecting an estimated 237,693 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 1 complaint with NHTSA, most often about the power train. Last updated July 5, 2026.
THE NUT ON THE CARRIER SUPPORT BOLT ASSEMBLY MAY BREAK WHICH WOULD ALLOW THE ENTIRE WHEEL AND TIRE ASSEMBLY TO SEPARATE FROM THE VEHICLE.
DEALER WILL REPLACE THE TIRE AND WHEEL CARRIER BOLT ASSEMBLY AT NO CHARGE.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“Transmission fails to shift properly while towing trailer, also sticks in overdrive.”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1978 GMC C15 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.