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My 06 Yukon Denali xl is showing low oil pressure. I replaced the sensor with a Delco sensor and it is still showing low 10 psi at idle and about 20 highway. The oil is not that old and shows full. Motor is not sounding great but it doesn’t sound exactly like the videos I have seen with the bad lifters. If anyone can tell me the next thing to check I would appreciate it. Thanks

Posted by BRENT TAUBERT on


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Decal Dan Kinh NND

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T?i ?ang g?p v?n ?? v?i phim d?n xe h?i c?a t?i, gi? ch?a t?m ???c gi?i ph?p.

Posted on Mar 26, 2020


Vernon Taylor

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10 psi with a hot engine at idle isn't so bad, not great but not bad, but 20 psi at road speeds is quite bad and I think should be double that.

Bad lifters is the least of your trouble as low oil pressure puts the bottom end - that is the crankshaft and bearings at risk of serious damage.

An engine with low oil pressure should have the cause investigated asap, preferably without being driven further...

Posted on Mar 26, 2020


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  • 405 Answers

SOURCE: 2002 Yukon XL Denali Problem: When

Most sensors will trigger the check engine light, however the TPS(throttle position sensor) or EGR Valve(exhuast gas recirculation valve) could be potential causes. Does this problem only occur at idle? Is the idle normal in park? Let me know and I can try to assit further.

Hope this helps

Posted on Jun 27, 2008


Philip Long

  • 1486 Answers

SOURCE: 2001 dodge 5.9 diesel Cranks for 20 to 30 sec to start in morning

You have fuel runback.Replace the injector leak off pipes then try.If this does not work then have a non return valve fitted to your fuel supply pipe close as possible to the punp.Hope that was helpfull good luck.

Posted on Aug 01, 2009


  • 1 Answer

SOURCE: 88 ford ranger 2.9 low oil pressure

i just bought a BII with famous tick..........oil pressure light came on (no gauge). I installed mechanic gauge and showed 5 psi so I decided to replace oil pump. Pulled pan off (not fun!) the pickup tube was clogged and the was part of the timing chain tensioner in pan. I then pulled timing cover off only to find chain streched and the chain guide and tensioner pretty much gone. I think tick was chain slap..........will know for sure in a couple days.

Posted on Dec 24, 2009


  • 538 Answers

SOURCE: low oil presure on gmc 5.3

Oh my!! I'm guessing the "oil pressure relief valve" is stuck open. Does the motor sound OK no knocking or ticking? The "oil pressure relief valve" is built into the oil pump.

Posted on Jan 03, 2010


  • 1 Answer

SOURCE: 1996 oldsmobile aurora oil pressure

The Aurora is a low pressure oil system. The only solution available at this time is to increase the oil weight. I went o straight 30W to solve the idle alarm issue. Some use 20W oil and that works too.
With 20W you will be at 80 to 90psi cold then drop to 20-30psi hot.
I first replaced the oil pressure gauge and it was worse. I put the original back in and it was better. Then went to 30W and all is fine.
Running it that way for a few years now.

Posted on Apr 03, 2010

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