The government has opened an investigation into engine fires in Pontiac Grand Prix passenger cars, officials said Friday.
The investigation involves 1999-2002 versions of the Grand Prix GTP with supercharged V6 engines. The National Highway Traffic Safety Administration said it received 21 complaints from consumers, including 16 involving fires that started five to 15 minutes after the vehicle was parked and the ignition was switched off.
The safety agency estimated that the preliminary evaluation involved nearly 72,000 vehicles.
Alan Adler, a spokesman for General Motors Corp., said the company was cooperating with the investigation.
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