1998 GMC C1500 replacing an oil pump

1998 GMC C1500
166,565 MILES • V8 • 4WD • AUTOMATIC
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J12667
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  • 1 POST
My truck at start up makes a ticking sound kind of like it has no oil. I have checked and it is full with 5W30. After it warms up the ticking goes away. Could this be a bad oil pump and if so is this something that I sould try to replace myself. I am a mister make it worse. If it can be broken I will brake it.
Feb 6, 2009 at 5:49 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Use an oil pressure gauge and check the pressure.
at
1000 rpm pressure should be 6 psi
2000=18 psi
4000=24 psi.
Feb 6, 2009 at 5:58 PM
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