2000 Buick Regal • 142,000 miles

I have a 2000 buick regal ls and I was driving for about an hr around town and everything was fine then I started to notice it was shifting gears harder then normal then as I got closer to home my service engine soon light came on and when it shifted it was jumping alittle I checked tranny fluid its good and not dirty at all doesnt smell bad either, I also could hear a whinning noise as I accelerated, I read on a buick forum and alot of people have the same problem but they ended up finding out the spark plugs were done 5 of the 6 were at 0.69 gap and they looked awful they changed plugs and car ran perfect plz help I just got this car certified and on road on friday plz tell me this isnt a tranny issue thanks for your time
November 25, 2012.

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