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Old 12-29-2017, 08:58 PM   #2
greasemonkey
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Join Date: Dec 2001
Location: Pace, FL
Posts: 2,155
Re: 2005 GMC will crank but not start any ideas

Air, fuel, spark...any details on the truck like miles, maintenance, engine codes, etc would help. If it was running fine one day and not the next, I'd check the fuel pump. Usually you can hear them running to prime the system for a few seconds when you first turn the key on.
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