It should have had one unless someone else removed it. They are hard to find down in that hole sometimes. I had a blocked screen in my 2012 when I bought it and a new screen + sender solved the problem in my case.
Oil pressure issue
- Thread starter Idriveaho
- Start date
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In all of your (or anyone elses) low oil pressure situations, do you also lose power? I'm going through a power loss condition when my oil pressure drops. i had a shop put a mechanical gauge on the vehicle and while driving, the power loss happened the same time the pressure dropped.
2006Tahoe2WD
Full Access Member
Interesting, I haven't heard of that. I'm thinking if the low pressure causes increased friction somewhere and apparent power loss that seems pretty drastic. By drastic I mean e.g. bearing failure. Doesn't seem like you would have bearing failure over a long period of time.
Have you pulled the valley cover/VLOM and addressed that leaking internally? It's right up there on the most common causes of low oil pressure besides the pickup tube o ring..... And it's pretty common to find the bolts holding it down finger tight or less.
I just got this vehicle and I don't even know what the vlom is! When I originally got it it had a metallic ticking sound which we thought was a plugged catalyst. I got a y pipe from a denali complete with original cats and installed that (after discovering the output flange was bigger!) with no change. Finally took it to a shop that diagnosed the ticking sound as a weak return spring on the starter clutch. And of course the power loss is still there, the cat wasn't the problem. I have a hard time believing the oil pressure drop is causing the inadverent triggering of the DOD. I'll do some digging on the vlom. If you have any info you can point me to that would be great, thanks!
2006Tahoe2WD
Full Access Member
Something to try...
On an iphone app or scanner watch the long term and short term fuel trims using graphs and see if there is a change when the power drops. I've done this on my iphone while driving. You might be able to tell if the ECU is telling the injectors to reduce the fuel.
On an iphone app or scanner watch the long term and short term fuel trims using graphs and see if there is a change when the power drops. I've done this on my iphone while driving. You might be able to tell if the ECU is telling the injectors to reduce the fuel.
The VLOM is a common source of low oil pressure. As mentioned, it's common to find the bolts loose. Low oil pressure will affect your variable valve timing, and hence your power output. The whale pick up tube is probably number one on the list for low oil pressure. Other items are the oil pressure relief valve getting weak in the oil pan, and the oil pressure relief valve built into the oil pump getting old and weak as well.
I would do some reading here on the forum and get familiar with your engine and the AFM system.... And don't throw money at shops that don't have a clue what they're doing.
It's preferable if you're up to turning a few wrenches.... You'll find instructions for everything you need to know right on this forum, and it will save you literally thousands of dollars in Shop prices.
I would do some reading here on the forum and get familiar with your engine and the AFM system.... And don't throw money at shops that don't have a clue what they're doing.
It's preferable if you're up to turning a few wrenches.... You'll find instructions for everything you need to know right on this forum, and it will save you literally thousands of dollars in Shop prices.
One thing to remember is take the time to make sure things are diagnosed properly before throwing parts at it. The metallic ticking you describe, is often nothing more than an exhausting between the exhaust manifold in the cylinder head. They can sound just like a lifter ticking. Look for a missing or broken exhaust manifold bolt as well.
