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Re: Missfire
Posted to Technical Discussion Forum on 9/19/2019 1 Reply

[2011 GMC Sierra 1500 SL, Engine/Propulsion Waveform]

This truck had a P0301 and the shop switched the coils, plugs, along with some other tests.

In this capture, the engine is cranking for very near 2 seconds, then cyl 1 loses compression. Login to read more.

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