Replacing the coil and module fixed my problem On my Buick buick lacrosse 2009 and hopefully it fixes yours too. Your issue could be different than mine. I am not a mechanic but I saved myself time and money and fixed the issue. These parts are in many GM cars so junk yards will have the parts too. Coils and Ignition Module was priced at $35-$40 used. GM 3800 3.8L V6 engines were in many cars like
Chevrolet El Camino, Pontiac LeMans, Buick Lacrose, Some Oldsmobile, Pontiac La Crose and other models
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