08 silverado I don't know if it's a coincidence but after I wash my truck it randomly turns off and then it won't start it cranks but won't start then after a few minutes later it starts up and works
Water may be getting into the underhood fuse block from the cowl, or getting into the ignition circuit at or near the firewall, again through the cowl. try pouring very small amounts of water onto the windshield/cowl area and seeing when and where it starts to affect the truck and what is getting wet.
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