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2015 Silverado no crank no start with key. (have engine light on dash and also have u422) have replaced starter and battery. have 12.5 volts at the starter. checked 2amp fuse in dash for ignition switch, checked under the hood 15amp fuse that powers the ignition switch, checked the 60 amp fuse in fuse box. also checked the 40 amp fuse, checked starter relay in fuse box under hood. tried jumping starter relay post and got nothing. have 12.5 volts at power leg of starter relay, have ground on ground leg of relay. can jump starter solenoid with screw driver and truck runs and drives.

gear shift selection shows park when in it and neutral. Anybody have any ideas of what could be going on?
 
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