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International Automotive Technicians Network
Re: GMC Savanah Cut Out?
Posted to Technical Discussion Forum on 5/27/2018

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[1987 GMC B6000 B6P042, Ignition Waveform]

The blue CH A is the secondary voltage and the coil has to produce 10kv, in this example, to overcome the resistance in the secondary circuit at idle, to ... Login to read more.

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