Question about Cars & Trucks

1 Answer

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?

Posted by Anonymous on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Cars & Trucks Master
  • 51,260 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


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

short shadey
  • 421 Answers

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

  • 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

  • 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


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

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How do I replace the purge valve on 2006 Yukon Denali

Replacing Vent Valve Solenoid Purge Valve Solenoid EVAP Valve 2005 GMC...

Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement . Remove the evaporative emission (EVAP) line from the canister purge solenoid, perform the following:
Push the large size white retainer portion in.

Push down, while pulling up slightly in order the disengage the tube.

Disconnect the EVAP canister purge solenoid electrical connector (1).
Remove the EVAP canister purge solenoid bolt (2). Remove the EVAP canister purge solenoid (3) and insulator (1).

Sep 19, 2015 | Cars & Trucks

2 Answers

I want to know how to fix the lufters on a 2011jeep cheeraki


Jun 17, 2015 | Jeep Cherokee Cars & Trucks

1 Answer

2006 on 2006 envoy denial lifter is stuck innthe upper part of the engine on boys Denali lifter is stuck in the upper engine

A lifter that is sticking is an upper enging overhaul, this is goinig to cost about 1000 dollars

Feb 09, 2014 | 2006 GMC Envoy Denali

1 Answer

Why does my 2008 envoy denali motor tick?

well if they were replacesd not that long ago . take back to garage and see if they need to treak it a bit . sometimes they need adjusted or treaked a bit . you more than likly drove enough to have them seated but might be 1 or 2 lifters that just need that extra turn now .
this is what it sounds like hopefully it is just this and not the crankshaft or pistons and bearings . . let me know how it goes .

Nov 28, 2011 | 2008 GMC Envoy Denali

1 Answer

Check engine light on and tighten gas cap comes on. I've replace the gas cap and it still happens. 2006 Denali 6.0L engine

I just repaired this problem this past weekend. It is the Emission Control Solenoid. It is located next to the fuel tank. The cost of the part is about $30.00 from the dealer. It has one electrical connection and one hose attached. The total repair, including jacking the truck up was about 20 minutes.

Sep 19, 2011 | 2006 GMC Yukon Xl Denali

1 Answer

How to adjust the head valves on a 1999 yukon denali 5.7 liter.

it has hydraulic lifters ther is no adjustment

If you need further help, I’m available over the phone at

Feb 26, 2011 | 1999 GMC Yukon Denali

2 Answers

We have a 2005 GMC Yukon. Dealer had car for more

Sound to me your valve guides are worn and letting oil get past the valves and being burnt in the engine,I hope this helps you and thanks for useing use at fixya

Sep 20, 2009 | 2005 GMC Yukon Xl Denali

1 Answer

06 dodge ram hemi engine knock at idle from bottom of engine

Sometimes a valve lifter will stick and cause a ticking it is possible that a valve lifter has lost its prime or it might be that the oil is too thin. Wthout more info my bet would be a lifter

Mar 17, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Collapsed lifter

if it is higher mileage i would replace all of them since you are already tore down to replace one. it is not a common problem.You could replace the one and never have another problem just never know.

Jan 29, 2009 | 2006 Chevrolet Trailblazer Ext

1 Answer

Engin sound

first of all if you need to find a mechanic or shop which you can be familiar with ask around where do friends /clients take car trying to guess your problem by e mail is not accurate. valve train noise ,lifters should be adressed with a hot oil flush cleaner for 15 minutes followed by a new oil filter and fresh oil for a small fee before condeming the valves /camshaft for a large bill

Dec 01, 2008 | 2002 GMC Yukon Denali

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

37 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

80531 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

15360 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides