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MY 2011 CHEVY COLORADO WILL NOT TURN OVER. IT IS COMPLETELY SPORADIC. SOMETIMES IT WON'T START FIRST THING IN THE MORNING, MAKING ME LATE TO WORK. SOMETIMES, I GET ALL THE WAY TO MY DESTINATION, OR TO A GAS STATION AND WHEN I TURN THE TRUCK OFF AND TURN IT BACK ON IT WON'T TURN OVER. EVERYTHING ELSE SEEMS TO BE WORKING FINE, MY RADIO, MY AIR CONDITIONING, ALL MY LIGHTS FUNCTION JUST AS THEY SHOULD BUT MY MOTOR WILL NOT TURN OVER. THERE ARE NO CLICKING NOISES, OR OTHER STARTING NOISES WHEN I TRY TO TURN THE KEY. I HAVE SAT AND TRIED TO START THE CAR 5-100 TIMES, NOTHING. I THOUGHT MAYBE IS WAS USER ERROR, NOPE. NOTHING I HAVE DONE WILL START MY TRUCK. AFTER WAITING 20 MINUTES TO AN HOUR IF I TRY TO START IT, IT STARTS RIGHT UP LIKE THERE WERE NO PREVIOUS ISSUES
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have you checked ALL connections for corrosion,being tight,broken wire(s).removed the battery cables from the battery,look for corrosion between the post and the connector? has power/signal been tested at the starter when this happens?
checked battery, terminals, fuses, and starter. plus grounds. there is power going to starter. when it sits for 20 minutes ---30 it will start right up. took it back to auto mechanic and to dealer there is no stored codes, and everything is fully functioning.
BUT,when it won't crank over,using a helper to turn the key to the cranking position,you should have battery voltage on the small wire on the starter solenoid,when the helper turns the key to the cranking position. this is the wire coming from the switch..you can unplug it to check it if needed,just don't let it touch metal while it's unplugged/disconnected!