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Re: 2002 Impala, Theft OK but no Inj Pulse
Posted to Technical Discussion Forum on 10/4/2018

Hi Geoff

Having an rpm signal is indicating you have spark, and crank sensor B at the ICM is functioning [...] cam sensor and crank sensor A report directly to the PCM. This should narrow down the search to the no injection pulse. Missing signal at crank sen... Login to read more.