heres a recall i found a while back its probably a little late but maybe you should contact GM and see what they have to say
Summary: A backfire during engine starting can cause breakage of the upper intake manifold.
Consequence: This condition can cause a no-start condition and possibly an engine compartment fire.
Remedy: Dealers will update the powertrain control module programming. Until the campaign repair is made, the vehicle hood should be shut whenever starting the vehicle to reduce the chance of personal injury.
Notes: Vehicle description: passenger vehicles equipped with 3. 8l v6 engine. Owner notification: owner notifications began during july 1996. Note: 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 buick at 1-800-521-7300; pontiac at 1-800-762-2737; or oldsmobile at 1-800-442-6537. Also contact the national highway traffic safety administration'* auto safety hotline at 1-800-424-9393.
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