Re: hummer shut off on wife onroad
Does the engine crank, if not check the crank fuse. Have you had an ignition switch replaced in the past, if you have sometimes the connector at the switch is broken and backs out. remove the plastic steering column cover(lower half) check the connector. While your there you can check for power on i think the pink wire with the key in the run position. Have someone attempt to crank the engine and see if the starter relay in the underhood fuse block clicks, if not your not getting power to the relay or the relay can be bad
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