i have a gmc sierra 1500 thats cuts off after i run it about 15 min.

adrian

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when it cuts off it takes about 15? min to cut it back on
 
when it cuts off it takes about 15? min to cut it back on

Start with the simple and replace the fuel filter and swap out the fuel pump relay. Good luck and keep us posted, a dirty fuel filter will cause this type of problem and not set any service engine light to come on.
 


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