2001 GMC Sonoma Stuck oil pressure relief valve

Tiny
SCHERZBIT
  • MEMBER
  • 2001 GMC SONOMA
Engine problem
2001 GMC Sonoma V6 Two Wheel Drive Automatic 90000 miles

My oil pressure relief valve seems to be stuck shut. Where is it located? Is it accessible externally?
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Saturday, December 8th, 2007 AT 12:51 PM

3 Replies

Tiny
JACK42
  • MEMBER
4.3-W That has a pressure relief spring in the oil pump, which requires oil pan removal, and might be one in the oil filter adapter, or cooler mount which ever you have. What is it doing anyway?
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Sunday, December 9th, 2007 AT 7:51 AM
Tiny
SCHERZBIT
  • MEMBER
It's blown the o-ring off the filter, and spit out all the oil, twice now. The relief valve isn't in the adapter, so it must be on the oil pump.
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Sunday, December 9th, 2007 AT 9:55 AM
Tiny
JACK42
  • MEMBER
Yes it is. Getting the pan out of those S-trucks is a pain, but not impossible.
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Monday, December 10th, 2007 AT 7:22 AM

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