Question about 2001 Pontiac Grand Am SE

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Spark plugs for 01 grand am 6 cylinder not super charger. can you tell me wich ac delco spark plugs to use. parts store sold us 41-979 and they are too long and hit the piston. thank you

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Here's a great way to be sure. Go to and enter your vehicle info. It will then give you different options of plugs and tell the difference in competitors.

Posted on May 15, 2010

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  • rebekah_gilm May 16, 2010

    wanted to follow up. the parts store did not sell us the wrong plugs. they sold us the plugs that apply to our car. we were hearing a loud clacking sound after replacing them that was not there before. we compared the bosch plugs that were in it with the ac delco and the ac delco were 1/8 of an inch longer. we installed new bosch plugs instead and still had a noise issue. finally went away but my husband decided to check the oil before he test drove and found the oil 1 qt too full. i will be kicking some major but when i get to work on monday as i am a service manager and our lube tech changed my daughters oil about a month ago. too much oil can cause a rod knock too. thanks for the quick response.

  • Chris Busby
    Chris Busby May 16, 2010

    You are correct, it can also cause internal damage, such as early oil pump failure or valve damage. Good luck.

  • honeymokey
    honeymokey May 17, 2010

    One qt. over should not have hurt the engine. Sounds like a carbon knock and they will go away as a rod knocking will not. Funny is never knocked before you put the correct plugs in. These motors are bad for the intake gaskets leaking coolant into the crankcase too. Never use a fram oil filter on a gm engine.



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Overheading 99 deville

The fans don't kick in until around 225 degrees.

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