2006 gmc sierra 5.3 no spark
8 Answers
More than likely the coil is bad. You can have it tested at an auto parts store. Also a bad distributor cap and rotor, or bad coil wire.
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This truck has coilpacks non distributor.
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No spark from any of them? The coils may not be getting any power.
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The coils have good ground and 12v going to them. Kind of wondering if 12v signal from ecm triggers them? And if so it's seeming more and more like a tow bill and expensive dealer service for me.
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Yes the ecm triggers the signal to the coils.
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Check out the fuses first, I think there is a fuse for the ecm.
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Smackgeorge44 answered 5 years ago
I have the same issues on my 2006 GMC Sierra 5.3. New crank sensor and still no fire
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Did anyone ever figure out what was wrong?
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