1984 GMC C Series

The 1984 GMC C Series has 4 recalls, the most serious including two fuel system hazards: propane-fueled C20 trucks may leak propane at a cracked fitting during refueling, and certain trucks have fuel tanks that can rupture in a collision.

On the C20 propane models, a cracked swivel nut on the fill line can release propane gas when the shut-off valve opens during fueling, creating a fire risk at the pump. The second fuel concern affects fuel tank integrity in a crash, where the tank can be punctured and spill fuel rather than containing it. Both of these issues carry fire risk under different circumstances, one during refueling and one during a collision.

The C30 trucks have two separate mechanical concerns. On the steering side, the toe-in alignment may not have been properly set and a tie rod clamp may not have been tightened at the factory, which can allow a tie rod to separate entirely while driving and cause sudden, complete loss of steering control. On the wheel side, Firestone 16x6 disc wheels on C30 models can develop cracks in the drop center of the rim. If a crack goes unnoticed and spreads on a wheel with a tube-type tire, the rim can split and the tire can lose air pressure rapidly, again with no warning to the driver before control is lost.