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International Automotive Technicians Network
Re: GMC Savanah Cut Out?
Posted to Technical Discussion Forum on 5/26/2018

Hi James

That waveform does not look like a failing coil,firing line 11 KV followed by a fairly decent spark [...] spark line should be about 30% of the firing line which it is,the coil oscillations are quite good. Since the ICM establishes dwell for coil sa... Login to read more.