Defect Investigation Detail

CHEVROLET / B6P042 / 1987

Components - Details
NHTSA Action Number: PE87021 Vehicale/Equipment Name: CHEVROLET
Vehicale/Equipment Model: B6P042 Vehicale/Equipment Year: 1987
Component Name: VEHICLE SPEED CONTROL:LINKAGES Manufacturer's Name: General Motors, LLC
Date Opened: Feb, 09 1987 Date Closed: May, 14 1987
Subject: MUFFLERS EXPLODE Summary: Summary of information from manufacturer:manufacturer has not beencontacted.recall and service bulletin files will be searched.analysis:three school bus body companies indicate that the subjectvehicles are prone to violent backfiring.reportedly the problem occurs asthe chassis is driven on the assembly line.explosions are reported assevere, with mufflers being blown open, spewing shrapnel, flames, andsparks.reportedly one employee received singed hair and eyebrows.asecond employee suffered deafness in one ear even though she was wearingappropriate ear protection.the problem may be related to changes in thefuel and emission systems, improper use of the manual choke, and numerousengine starts and shutdowns on the assembly line.proposed action:to open a preliminary evaluation.===