Question about 1999 Pontiac Grand Am GT

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1999 pontiac grand am 6 cylinders shakes when i put it on drive why

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It may be time for a tune up, Replace the spark plugs, spark plug wires, replace the fuel filter, and clean out the throttle body and fuel injectors. If there is an Auto Zone around your area, you can go there and have them scan the car for any DTC codes that would indicate anything wrong with the engine that would cause the bad idle. If there is no code, then time for the tune up and mentioned. Good luck and keep me posted, be glad to answer any questions you may have and Auto Zone can give you the step by step instructions to tuning up your car free of charge too like the scan. 

Posted on Jul 17, 2009

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Posted on Jan 02, 2017

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