GMC C7500 1999: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

General Information

NHTSA Campaign ID Number: 02V287000

Make Model Year
GMC C7500 1999
Date Owners Notified Date Received by ODI Date Added to Database
2002-12-18 2002-11-04 2002-11-06

Production Dates: 1998-10-01 - 1999-06-30

Manufacturers Involved: General Motors, LLC

Manufacturer Campaign Number: 02044

Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

Potential Number Of Units Affected: 2011

Report Initiator: MFR MFR Report

Summary

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.

Notes

GM RECALL NO. 02044. ALSO, CUSTOMERS CAN CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT '1-888-327-4236'.