My 2008 lacrosse misfiring
I replaced plugs and wires to find the 4-1 coil had no spark so I replaced it. After 30 sec it started misfiring again tested it and their is no spark on that coil again. Before all of this the car would start at all but after siting in the garage for a day it started but was misfiring. Could the icm be the problem
replace the ignition module below the coil. i had the same problem in my rivi.
The ICM was junk, runs great now!
Search Buick LaCrosse Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Buick LaCrosse Experts