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Old 04-01-2024, 04:28 PM   #5
Mouse330
 
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Drives: 2011 2SS, 2006 GMC Sierra
Join Date: Jul 2019
Location: MA
Posts: 266
I would just swap the coil, But to be sure you can swap two coils and run the engine and check for the code to move to the cylinder you put the suspect coil. The pink wire(D) is ignition voltage and the black wire(A) is ground on all coils, You can check these with a test light or power probe. GL
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