1999 GMC HARD START WHEN WARM

  • Tiny
  • Aman721
  • 1999 GMC

Other Category problem
1999 Other GMC Models V8 Four Wheel Drive Automatic 140000 miles

Starts right away when cold. Cranks for several seconds when warm. Back fires every couple of weeks.

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Sunday, February 3rd, 2008 AT 2:52 AM

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  • Tiny
  • Service Writer
  • EXPERT
  • 9,252 POSTS

The fuel pressure regulator may be your problem if it is leaking. Sometimes there will be a raw fuel scent at the motor when this happens. The 5.3 motors were affected by this.

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Sunday, February 3rd, 2008 AT 6:43 AM

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