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Matt J
Matt J, Chevy Technician
Category: Chevy
Satisfied Customers: 1399
Experience:  10+ years automotive tech, 5 years of experience in a GM dealer
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1997 K1500 chev 350 vortec...ignition module..coil

Customer Question

1997 K1500 Chev 350 vortec. Code p1351. Changed ignition module and coil. Still no spark. Code says voltage too high. Where else should I look?
Submitted: 8 years ago.
Category: Chevy
Expert:  Matt J replied 8 years ago.

Hello my name is XXXXX XXXXX I will be more than happy to assist you.


Do you have a Volt Meter and a Test Light?

Customer: replied 8 years ago.
I do have both.
Expert:  Matt J replied 8 years ago.

Below click on the link for the Diag Chart for this code. It will guide you though steps to find the problem.


Most times with this code I find a open or short in the wire harness on top of the engine block.





Matt J and 2 other Chevy Specialists are ready to help you
Customer: replied 8 years ago.
Dumb question, What is the VCM? It is talking about the possible pin being backed out on C3 Pin 9.
Expert:  Matt J replied 8 years ago.

VCM = Vehicle Control Module. See picture for location.


The VCM has 4 Connectors and they are all different colors.

C1 = Blue

C2 = Red

C3 = White or Clear

C4 = Black


I could skip down to the actual testing instead of looking a the possibles.