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International Automotive Technicians Network
Re: 08 3500 silverado- keeps running w/key off
Posted to Technical Discussion Forum on 1/6/2022

This might sound stupid, but I have seen it years ago. If it has an auxiliary electric cooling fan, make sure no one has done some creative wiring to make it run full time. This will back feed induction power to circuits and create a continuous running conditi... Login to read more.