Question about 2002 Pontiac Grand Am

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GrandAm Tranmission shifts hard

2002 3.4L GrandAm with automatic, shifts hard during normal driving, has been serviced with new filter and proper fluid and level. This problem started after the intake manifold was removed for gasket replacement.

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  • ravila744 Dec 14, 2008

    transmission hits hard when put in drive and out of first gear thats all. all other gears shilt fine.

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I had the same problem in my 2002 grand am GT. After taking it to a transmission shop and them telling me that I had all this stuff wrong with it that was going to cost me about 2700$ I looked elsewhere. I had an Intake Temperature Sensor that had went bad. It was registering on the check engine light after the fact. I changed it and then found out there was a loose wire in the connector. I fixed that and havent had a problem with it since

Posted on Jan 26, 2009

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I also had same problem with the harsh shift after doing intake manifold gasket....the problem? I forgot to plug in MAP sensor. Runs like a champ now.

Posted on Mar 06, 2010

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Thanks for the info. that is the same problem my friend found on friday 1-23-09. I had a broked wire. I just changed the (IAT) sensor 2 weeks before and it was still doing it so he dug alittle deaper and found the wire. All works good now.

Posted on Jan 26, 2009

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How about transmission kick down cable great place to start! they some times stick and I had one that would not shift pass 2nd gear and I serviced it ggod to go! so try starting at that?????

Posted on Dec 23, 2008

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Some possibilties, not all!

~Lucas

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