Question about 2000 GMC Jimmy

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2000 gmc jimmy starts in AM fine won't start after sitting in sun all day

Vehicle starts but then shuts off like ran out of fuel, fuel pump running then shuts of like normal, no active codes, starts and runs fine in the morning but after sitting in sun starts but won't stay running, new plugs, only has issue after sitting in sun all day.

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  • GMC Master
  • 21,873 Answers

Can you jumper the fuel pump and make it start and continue to run ?
Have you checked to see if you are getting spark when it won't start ?
Could be a relay or coil, ignition module, or other component.

Posted on Aug 09, 2012

  • Kenneth Aug 09, 2012

    It starts and then quits. IT will run when the weather is cool in the morning but NOT after setting in the sun all day. IT DOES start so it's not the plugs, cap, rotor etc. it has something todo with the fact it sits in the hot sun all day

  • Apollo Morelos
    Apollo Morelos Dec 16, 2012

    have you figured it out what might be causing this problem?

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4 Suggested Answers

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Posted on Jan 02, 2017

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Anonymous

  • 13 Answers

SOURCE: 1999 gmc jimmy will not start after it sits for a

where did you get the pump replaced?a dealer or local garage There are 2 pumps for the jimmy one for a plastis tank which is an 18 gal and one for a metal tank which is a 19 gal.if the jimmy has a metal tank get the 19 gal pump . i ran into the same problem with my 98 jimmy

Posted on Apr 17, 2009

Anonymous

  • 1 Answer

SOURCE: 2000 GMC Jimmy won't start

i had the same problem and replaced the fuel pressure regulator. Cost about $45 at advance auto store or about $90 at napa auto stores. Once i replace that my truck started right yup and runs like a champ

Posted on Jul 13, 2009

Anonymous

  • 1 Answer

SOURCE: 97 gmc pickup, 5.7 eng, fuel pump not operating,

What you need to do is check you fuel pressure. Go to a local auto parts store and buy a fuel injection pressure tester. The pressure fitting is on the top of the motor its a 3/8 ish sized metal line and has a screw on fitting like a tire valve does. This line comes up from the back of the motor to the right of the distributor and goes down into the intake. Make sure to have a rag handy to catch the fuel seepage. After you connect the pressure tester turn the key on and off three times and read the gage you should have atleast 58 pounds of pressure. If you have 56 pounds it won't run because the fuel injectors are a poppit valve style and need atleast 58 pounds of pressure to operate.

Posted on Sep 12, 2009

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