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2006 GMC Denali engine valve sticking

Had dealer repair 24 valves and lifters in December 2011 at the tune of $3,500. In December 2012 car broke down and towed to nearest dealer. Same diagnosis collapsed valve with one quart of oil in engine. There was no warning lights on, no low oil pressure indications. Oil check prior to two drive for vacation, but dealer said low oil was the problem. How can this be prevented. Better oil? Continuous checking of oil?

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  • Cars & Trucks Master
  • 44,335 Answers

Low oil pressure will make the valve train noisy but will not damage a valve
what is possible is that a valve seat insert came loose and prevented the valve from closing properly and it hit the piston
you should check the oil at least weekly and if there is an oil usage problem , daily
sound like a dealer didn't want to acknowledge faulty workmanship as it always the "drivers fault" when things go wrong

Posted on Jul 13, 2017

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Posted on Jan 02, 2017

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short shadey
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SOURCE: 6 Cyl 1998 Toyota Camry Oil Pressure Light

these cars have problems with bad oil pressure warning switches you may have someone put an oil pressure gauge on the car and make sure your pressure is within spec and go ahead and change the sender if it checks out please rate -jeff

Posted on Sep 01, 2008

  • 1861 Answers

SOURCE: Significant engine damage from oil change

Thank you for asking my assistance. I will try my best to help you.

I have been in the Toyota biz for the last 14 years, and, unfortunatly, have not ever heard of this issue. That being said, I do have connections in the engineering dept at Toyota, and on Monday, I will call out to the west coast and inquire further for you.
Now, to the issue at hand: The shield that was bent down is secured very well to the underside of the valve cover. To bend that device, I can only guess that when the oil was being put into the engine via an oil pump, the nozzle of the pump was *** jammed *** down onto the shield, and broke it loose from the internal retainers under the valve cover, and contacted the cam; this is very possible...I agree with the statement that your SM provided, however, further engine damage? Removal of the oil pan would be in order, to determine if any more pieces are there. Doubt it, though.
And, to answer your last question, the responsibility of the cause for failure is your oil change guy.
He bent/broke the shield, and caused your problem. I hope this has helped, if you have any other comments or questions, please feel free to repost.

Posted on Oct 04, 2008

jgwhomeequip
  • 1902 Answers

SOURCE: Oil Pressure Warning light

Sounds like possiblity of the oil pump being bad, and is setting off other sensors on your car.

Posted on Feb 10, 2009

savindude
  • 175 Answers

SOURCE: how do you change an idle control valve on a 2003 gmc envoy

The idle air control valve will be located at the top of the engine on top of the intake manifold. If you hold the new valve and then look at the manifold you should see where it goes. I'm guessing it'll have 2 screws and 1 electrical connector. The one's that I've replaced were very easy to get to and replace. Not sure on your vehicle. The screws may be phillips or torx type heads. Good luck, if this helps please rate this. Thanks.

Posted on Jul 04, 2009

  • 1129 Answers

SOURCE: STOP ENGINE-LOW OIL PRESSURE LIGHT COMES ON AFTER INSTALLING NEW

The idle may be to low or the motor is just old and a new set of rod bearings is need with an oilpump to bring the pressure back up.

Posted on Jul 14, 2009

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