🔧 Technical 04 Tahoe - Lower Oil Pressure

[Yaj Yak]

These gauges are actually relatively accurate. If it’s not the sending unit, I would watch the pressure on a mechanical gauge and look for the fluttering I mentioned. That is pickup tube o ring.

i legit don't know how many fucking times this can be said in this thread.

 

[PANDA]

i legit don't know how many fucking times this can be said in this thread.

So what is it, the gauges are accurate, or not? because this thread is nothing but 4 pages of you circle jerkers saying do not believe the gauge

 

[Yaj Yak]

So what is it, the gauges are accurate, or not? because this thread is nothing but 4 pages of you circle jerkers saying do not believe the gauge

they are not. relatively is the keyword there.

within 30psi is spec. as was said.

 

[Outlaw]

The dash gauge tends to be within 3-4 PSI of the sender readout based on my experience. My truck was doing some wonky things during the winter so I had my monitor hooked up for a while. I gave it synthetic 5w-30 and a 1/2 qt of synthetic Lucas. I had low pressure when cold and erratic pressure when warm. Changed back to conventional 5-30 and it’s been fine since back to the numbers I showed in those pictures.

 

[Yaj Yak]

The dash gauge tends to be within 3-4 PSI of the sender readout based on my experience. My truck was doing some wonky things during the winter so I had my monitor hooked up for a while. I gave it synthetic 5w-30 and a 1/2 qt of synthetic Lucas. I had low pressure when cold and erratic pressure when warm. Changed back to conventional 5-30 and it’s been fine since back to the numbers I showed in those pictures.

if.. the gauge.. is right.

as seen in the photo above, me doing 135 mph yesterday. gmt800 clusters love to be wonky.

as Bru said. mechanical gauge only way to be sure.

 

[Outlaw]

If the stepper motors are good that is. OKAY!!?!

My cluster got rebuilt, and I have a digital readout for oil pressure as it is.

 

[Yaj Yak]

If the stepper motors are good that is. OKAY!!?!

My cluster got rebuilt, and I have a digital readout for oil pressure as it is.

all steps PANDA also hasn't taken

but he should just keep changing the oil instead of looking into other issues.

 

[Outlaw]

I’m still of the opinion that they’re old trucks powered by 5.3’s that don’t die easily.

Run OKish oil, change every 4k, put a picture of your dog over the oil pressure gauge and send it.

 

[Yaj Yak]

I’m still of the opinion that they’re old trucks powered by 5.3’s that don’t die easily.

Run OKish oil, change every 4k, put a picture of your dog over the oil pressure gauge and send it.

 

[DEEZUZ]

TrUsT gM

 

[PANDA]

all steps PANDA also hasn't taken

but he should just keep changing the oil instead of looking into other issues.

Actually the cluster was rebuilt probably a year ago by B&B in McHenry when I had numerous light bulbs out and a "slow" speedometer. So I feel with a rebuilt cluster and a newer GM oil pressure sensor /switch the oil pressure reading should be a bit more accurate than the +-30 psi you claim. Yes 20psi at idle seems low to me but since it goes right back up to what I would call normal after I oil change I don't think I should start throwing parts at it. Especially stuff that isn't exactly easy for a panda to replace himself.

What is concerning to me is the oil pressure difference as indicated on the gauge between 3,000 mile oil and fresh oil. Junior high science. The oil/filter is the independent variable and the only thing that is changed.

 

[PANDA]

Not sure why I made this thread. If blackstone comes back and has bad news guess I am doing more frequent oil changes anyway.

 

[CMNTMXR57]

20psi at warm idle IS normal (or maybe a better word... "Acceptable") and within a general spec for an engine. Especially one with miles on it.

 

[DEEZUZ]

This engine and many others can run single digit when hot and that's in spec.

 

[DEEZUZ]

 

[CMNTMXR57]

I just went and looked up the spec, DEEZUZ beat me to it, GM says base 6psi/1,000 RPM's

 

[Bru]

A scanner is only as good as the sensor, so if you're sending unit is bad/going then it's sending a bad readings to the scanner. Mechanical gauge.

 

[Yaj Yak]

Not sure why I made this thread. If blackstone comes back and has bad news guess I am doing more frequent oil changes anyway.

you're just upset because you don't like the answers.

you wanted us to all say AMAZON IS SNAKE OIL STAY AWAY! so you could jiffy looob mobil one every 3k miles/2.5 months and go on looking at your beloved fake gauge.

 

[DEEZUZ]

Amazon oil is in SHO and they love it and gave me OK for 8k miles next time..

That's a turrrbboo engine that sees a whole hell of alot of fuel dilution and abuse.

 

[Chester Copperpot]

you're just upset because you don't like the answers.

This is the cliche "tech" post about a guy asking why his ABS light is on with the brakes SQUEALING at him and says "can't I just pull a fuse so the light goes away?"

 

[CMNTMXR57]

I mean, that Amazon oil has been Dexos certified by GM. We could get in to a separate discussion about how GM issues Dexos licenses, but they have given Amazon the license to say the oil meets their most stringent (Dexos) standard. Dexos supercedes previous GM6094M and GM4718M standards which are actually applicable to your engine. So yea, I'm not buying the "it's Amazon oil, so it must be ____".

 

[EmersonHart13]

This thread should be linked to our Facebook page.

 

[daturbosix]

Did you dump 15/40 in there yet?

 

[DEEZUZ]

This thread should be linked to our Facebook page.

Are you our new marketing director?

Not sure if I trust you enough.

 

[Bob Kazamakis]

I’ve upped my Amazon oil game to Costco oil! 2 gallons for $20-25 usually.