What did you do to your NBS GMT800 Tahoe/Yukon Today?

[Rocket Man]

Hello guys
The air ride compressor turns on for about 10 seconds then shuts off. The shocks are oem and fairly new. I put my hand on the air bladder as the compressor was trying to air up the bladders and the compressor shuts off. Does anyone know what might be wrong with air ride the system?


PS. I tested the shock bladders and they are holding air.

I ordered a new air hose kit. I figured buy that before I spend big bucks on the compressor.

That’s what it’s supposed to do unless you load a lot of weight in the back or with a trailer. The compressor comes on for a few seconds, it comes up a little, the ride height sensors say it’s at the right height, the compressor shuts off.

 

[iamdub]

After efan upgrade report:
Now that I’ve driven her more, I can definitely feel a throttle response improvement.! I think it’s more so at the higher RPM range, which is sort of the opposite of what I expected. And I cannot believe how quiet she is now…! Boy that clutch fan is louder than you think… pic after pumpkin patch, and quickie wash / half a detail, cuz it’s mandatory to post pics..! View attachment 353510

And your A/C will work better since the fan can run at full speed, independently of the engine RPM, pulling maximum airflow through the condenser even if you're idling. I noticed a huge reduction in drag and noise when I switched to an e-fan in my S10.

 

[ScottyBoy]

And your A/C will work better since the fan can run at full speed, independently of the engine RPM, pulling maximum airflow through the condenser even if you're idling. I noticed a huge reduction in drag and noise when I switched to an e-fan in my S10.

I was just about to say pretty much the same comment. After my E-fan install, I immediately noticed my AC blowing a LOT colder at idle and at slower speeds (under 25mph or so). It was almost like I turbocharged my air conditioner.

 

[iamdub]

I was just about to say pretty much the same comment. After my E-fan install, I immediately noticed my AC blowing a LOT colder at idle and at slower speeds (under 25mph or so). It was almost like I turbocharged my air conditioner.

Good to see you back around! I wondered whatever happened to you. I always mix up you and that guy from Jersey with the maroon Camaro.

 

[ivin74]

That’s what it’s supposed to do unless you load a lot of weight in the back or with a trailer. The compressor comes on for a few seconds, it comes up a little, the ride height sensors say it’s at the right height, the compressor shuts off.

The problem is that I had a load on it and the compressor did not fill the bladders up.

 

[Rocket Man]

The problem is that I had a load on it and the compressor did not fill the bladders up.

They didn’t fill at all or they didn’t raise the truck? If they filled until they feel solid (squeeze test) but didn’t raise it, either the ride height sensors aren’t telling it to raise it more or the compressor is bad.

 

[smcnair]

took out the headrests that had TV screens built in to them and installed some JY specials that were the wrong color so I painted them with the SEM system. Look pretty good but they are slightly different headrests. Not really noticeable until you compare them to the captains seat ones in the second row.

 

[Tonyrodz]

took out the headrests that had TV screens built in to them and installed some JY specials that were the wrong color so I painted them with the SEM system. Look pretty good but they are slightly different headrests. Not really noticeable until you compare them to the captains seat ones in the second row.

Let us know how the SEM paint holds up.

 

[ScottyBoy]

Got my oil pan dropped today and that sumbitch is FULL of sludge! Boy am I pissed. I COMPLETELY cleaned this pan out when I replaced the gasket and pickup tube in 2017. Since then I have changed the oil every 5,000 miles with Amsoil XL series oil and either a Mobil1 filter or a Wix XP filter. I'll admit though, the last 2 oil changes I used Mobil1 oil and then Walmart Supertech Full Synthetic for the last oil change. (about 3 months ago). In the bottom of the pan there is a THICK mud like sludge, and on the baffle, there is some hard caked up sludge that is flaking off in chunks kind of like rust. It also has a slight metallic color to it. Can anyone with more insight than me explain WTF is going on here?

 

[clandr1]

Got my oil pan dropped today and that sumbitch is FULL of sludge! Boy am I pissed. I COMPLETELY cleaned this pan out when I replaced the gasket and pickup tube in 2017. Since then I have changed the oil every 5,000 miles with Amsoil XL series oil and either a Mobil1 filter or a Wix XP filter. I'll admit though, the last 2 oil changes I used Mobil1 oil and then Walmart Supertech Full Synthetic for the last oil change. (about 3 months ago). In the bottom of the pan there is a THICK mud like sludge, and on the baffle, there is some hard caked up sludge that is flaking off in chunks kind of like rust. It also has a slight metallic color to it. Can anyone with more insight than me explain WTF is going on here?

It's possible that all that sludge was already there in 2017, and it finally broke loose and fell into the oil pan with new oil and consistent oil change intervals.

Are you using high mileage oil? My understanding is the HM oil will contain detergents that will break up sludge and cause it to fall into the oil pan. If the PO only ever used conventional oil, and had extended oil change intervals, it could have caused the buildup you're seeing.

When did you purchase the truck, and how many miles have you put on it since you bought it? How many miles are on it now?