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2008 LaCrosse p0300 multiple/random cylinder misfire

2008lacrossedenver

New member
2
0
1
Buick Ownership
2008 LaCrosse
Hello,

My 2008 LaCrosse is stuttering when idling, having a hard time starting and the CEL came on briefly while on the highway. When hooked up to a scanner, I am getting the P0300 code. I have replaced the spark plugs, ICM and all 3 coil packs. Wires look good, no cracks or breaks. Can anyone please guide me where to turn next? Thanks in advance for your help
 

Troy D

New member
5
0
1
Buick Ownership
2010 Lacrosse CXL
Hello,

My 2008 LaCrosse is stuttering when idling, having a hard time starting and the CEL came on briefly while on the highway. When hooked up to a scanner, I am getting the P0300 code. I have replaced the spark plugs, ICM and all 3 coil packs. Wires look good, no cracks or breaks. Can anyone please guide me where to turn next? Thanks in advance for your help
 

Troy D

New member
5
0
1
Buick Ownership
2010 Lacrosse CXL
im having the same exact problem, and the shop is telling me they cant find anything forn150 $
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