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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

wont start when cold

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Old December 4th, 2014, 11:03 AM
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Default wont start when cold

04 1500 burb (wont start when air temp is cold) once it starts it will keep starting though!
I have noticed that when the temp gets down under 40deg that the truck will not start without stepping on the gas pedal (all the way to the floor). I am having issues with the flex fuel sensor but do not think that is the issue. I sure could use some help on this one!! motor is tuned up new plugs less the 20k , k&n filter , oil changed every 3k newer fuel filter 20k on it. all in all I take care of her very well. I have a huntch that it could be fuel pump??? please advise.

happens if there is a full tank our less than 1/4.
Old December 5th, 2014, 2:11 PM
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best way know get fuel pressure tester.test your psi and then go from there.does sound like a pump tho
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