Meaning how could I check the wiring harness.
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2003 Chevrolet Express 3500 Question: how can I trouble shoot the coil pack and the electric going to the coil pack.
Answer #1your.mechanic November 17, 2012, 12:05Master
check for spark
Replyamoose46, November 17, 2012, 15:10Rookie
I have no spark I want to know how to check it back to a fuse
pushrod November 17, 2012, 16:45Master
No fire at all on any cylinder? If only one cyl. misfire, swap that coil with another one to see if misfire follows coil.