2000 gmc 2500hd 6.0 vortec

Asked by Aug 06, 2019 at 06:49 PM about the 2011 GMC Sierra 2500HD

Question type: Maintenance & Repair

I have a 2000 gmc 2500hd 6.0 vortec single cab
8ft bed. In cold weather or if it sits for a while it
fires right up but when I try to start a short while
after it running while it’s still warm or if it is hot out
it cranks over for a good 10 or so seconds. Once it
starts to fire it idles rough and once in a while
when I’m driving it starts to sputter so bad it won’t
move and rpms will rev but no movement. I have
changed fuel pump, fuel filter, fuel pressure
regulator and even the injectors since it used to
misfire. Caused by a bad injector I decided to
change them. The issue still remains and I am
running out of ideas. Any help will be appreciated.

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