Some 2wd and 4wd pickup trucks, converted to either dedicated or bi-fuel compressed natural gas (CNG) fuel usage, were assembled with a throttle cable that can contact and rub through the flexible pressurized fuel line creating a pinhole leak of natural gas to the atmosphere.

A strong odor of natural gas may be detected from inside the vehicle, possibly accompanied by a hissing noise. If the natural gas were accidentally ignited, serious injury could result.

GM has not yet provided a remedy for this campaign. Owner notification is expected to begin during November 2003. Owners should contact GMC at 1-866-996-9463.

On certain pickup trucks and sport utility vehicles, the galvanized steel tailgate support cables that retain the tailgate in the full open (horizontal) position may corrode, weaken, and eventually fracture. If both cables fractured, the tailgate would suddenly drop and strike the top surface of the rear bumper.

Anyone sitting or standing on the horizontal surface of the tailgate when both cables fractured could be injured by falling from the tailgate. On vehicles that have had the bumper removed, the tailgate may drop even lower. Additionally, if there is cargo on the tailgate the cargo may fall off if the support cables fracture.

Dealers will replace the cables. Owner notification is expected to begin during the third quarter of 2004. Owners should contact GMC at 1-866-996-9463.