how can I trouble shoot the coil pack and the electric going to the coil pack. on 2003 Chevrolet Express 3500

Meaning how could I check the wiring harness.

by in Southaven, MS on November 17, 2012
2 answers 1 comment
ANSWER by on November 17, 2012
check for spark
COMMENT by on November 17, 2012
I have no spark I want to know how to check it back to a fuse
ANSWER by on November 17, 2012
No fire at all on any cylinder? If only one cyl. misfire, swap that coil with another one to see if misfire follows coil.

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