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07/11/2020 6:56 am
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Hi Scotty,
I have a 2011 GMC Sierra SLT with the 5.3. After I drive the truck and park for approximately 15 minutes the truck will turn over and not start the first cycle. But, if I turn the key to the start position and off right away it will start normally. If it sits for an hour or so it will start normally also. There is a window where it will not start so I believe that rules out the fuel pump. To me it seems electrical but what is it... any help would be appreciated
thanks
2 Answers
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07/11/2020 7:07 am
It could be the MAF sensor, try cleaning it.
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07/11/2020 7:35 am
Check all your relays to see if any of them are damaged. Also, check your ignition switch, does your key get warm/hot after a long drive?
