2000 GMC Sierra Won't start in cold wx and runs rough in pa

Tiny
BOBBYBONES
  • MEMBER
  • 2000 GMC SIERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 85,000 MILES
Usually will not start if less than 50 deg F. When I punch it to passing gear it feels like its running on 2 cylinders.
Dealer had it for 1 1/2 weeks. He THINKS! It's the fuel pump he said it has 50lbs of pressure but should have 60lbs. I didn't want to spend $800 to find out this wasn't the problem. It has been tuned up with new wires, acdelco plugs, distributor cap and fuel filter. Same problem. I guess I was kind of shocked to realize they didn't know what the problem was for certain.
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Monday, December 1st, 2008 AT 6:10 PM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Service engine light on? Pressure O.K. Check MAF and crankshaft and cam sensors first.
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Monday, December 1st, 2008 AT 6:18 PM
Tiny
ROADSTER1929
  • MEMBER
  • 16 POSTS
Its your fuel pump 70 to 100 bucks
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Monday, December 1st, 2008 AT 6:33 PM
Tiny
BOBBYBONES
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  • 3 POSTS
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Monday, December 1st, 2008 AT 6:45 PM

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