NHTSA Campaign 02V287000

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

Issued by GENERAL MOTORS CORP. · Reported Nov 4, 2002 · 2,011 vehicles affected

What's wrong

CERTAIN MEDIUM DUTY C-SERIES AND B7 SCHOOL BUS CHASSIS EQUIPPED WITH A 7.4 LITER GAS ENGINE AND AN IMPCO LPG CONVERSION KIT. SOME OF THESE VEHICLES MAY HAVE ENGINE BACKFIRES WITH SUFFICIENT FORCE TO DAMAGE THE ENGINE AIR INTAKE SYSTEM AND THE AIR CLEANER FILTER ELEMENT.

Consequence

IF THE DAMAGED AIR CLEANER PARTS ARE DISLODGED FROM THEIR NORMAL POSITION, THESE PARTS COULD COME IN CONTACT WITH THE HOT EXHAUST MANIFOLD AND/OR HOT EXHAUST GAS RECIRCULATION (EGR) VALVE TUBE RESULTING IN A POSSIBLE ENGINE COMPARTMENT FIRE.

Remedy

DEALERS WILL INSTALL A REDESIGNED MIXER BONNET AND AIR CLEANER HOUSING COVER, SELECTIVE UPGRADES IN VARIOUS CONNECTIONS RELATED TO THE AIR INDUCTION SYSTEM, AND IF NEEDED, A NEW AIR CLEANER FILTER. OWNER NOTIFICATION BEGAN DECEMBER 18, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.

Vehicles affected by this recall

Make Model Year Units
CHEVROLET C6500 1999 2,011
CHEVROLET C6500 2000 2,011
CHEVROLET C7500 1999 2,011
CHEVROLET C7500 2000 2,011
GMC B7 2000 2,011
GMC C6500 1999 2,011
GMC C6500 2000 2,011
GMC C7500 1999 2,011
GMC C7500 2000 2,011

Source: NHTSA Campaign 02V287000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.