2002 GMC C1500 HARD TO START WHEN WARM

2002 GMC C1500
92,000 MILES • V8 • 4WD • AUTOMATIC
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DANNYB2971
  • MEMBER
  • 1 POST
MY 2002 GMC SIERRA 1500 Z71 4.8L 4 WH DR
STARTS GOOD WHEN COLD BUT IF IT SITS FOR MORE THAN FIVE MINUTES OFF, IT IS HARD TO START I HAVE TO CRANK IT QUITE A WHILE TO START IT. AFTER 5 0R SIX HOURS OFF IT WILL START RIGHT UP.
I TRIED SPRAYING THROTTLEBODY CLEANER IN IT BUT IT DID NOT HELP.
Dec 14, 2009 at 6:57 PM
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DR LOOT
  • ✓ASE Certified Mechanic
  • 2,311 POSTS
  • ASE Certified Mechanic
It may be a fuel problem. Have you checked your fuel pressure? and when is the last time you changed your fuel filter?
Dec 14, 2009 at 7:24 PM
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