2002 Buick lesabre check engine light flashing
2 Answers
Dave answered 3 months ago
If you have a P0300 OBD2 (multiple cyl misfiring) code, the ignition control module (ICM) probably needs replacing also. I mistakenly took my 2000 buick lesabre to a garage and they replaced 1 coil pack and the ICM ($750) and got it running fine, for 2 weeks. Then had the same problem. Then I followed some online advice and replaced all 3 coil packs and the ICM ($129 on ebay including the mounting bracket and fixed the problem.
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