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

[ScottyBoy]

Parked mine today. Got a "Check oil Level" message on my instrument cluster. Checked my dipstick and the oil level was only a half quart low. Topped it off and the light is still on. I also noticed upon acceleration, I'm hear a very slight "diesel engine" type of pinging. Sounds similar to the Piston Slap that these engine get when they are cold. So I got spooked thing it's starved for oil, and I parked it till I can investigate further.

 

[TollKeeper]

Bought these for nothing.View attachment 352895
The center of the hub separated, but the hub end piece is stuck. Not even budging. Beat it with a mini sledge--no dice. View attachment 352897View attachment 352898View attachment 352899
View attachment 352897
Axle is out.View attachment 352896
Would heat help to get the back end off the spindle? Any suggestions or ideas to get it off?

With the 3 backing bolts out, see if you can use a sledge/hammer and a drift punch, and get the 3 ears on the hub front to rotate left or right, the rest will destroy the backing bolts (unless you have a junk drawer with the same 3 bolts with the same threads), but feed them in from the front side, and useing the back plate as the fulcrum, start wrenching down the 3 bolts evenly. It will start pushing the hub out.

Now you have the hub out, but need those 3 bolts (Unless you had something in your junk drawer)

 

[Rocket Man]

Parked mine today. Got a "Check oil Level" message on my instrument cluster. Checked my dipstick and the oil level was only a half quart low. Topped it off and the light is still on. I also noticed upon acceleration, I'm hear a very slight "diesel engine" type of pinging. Sounds similar to the Piston Slap that these engine get when they are cold. So I got spooked thing it's starved for oil, and I parked it till I can investigate further.

How’s the pressure?

 

[Tonyrodz]

With the 3 backing bolts out, see if you can use a sledge/hammer and a drift punch, and get the 3 ears on the hub front to rotate left or right, the rest will destroy the backing bolts (unless you have a junk drawer with the same 3 bolts with the same threads), but feed them in from the front side, and useing the back plate as the fulcrum, start wrenching down the 3 bolts evenly. It will start pushing the hub out.

Now you have the hub out, but need those 3 bolts (Unless you had something in your junk drawer)

I can't picture the ears you're talking about. I got the 3 bolts out with no problem. I'm leaving it alone til tomorrow. Going to HF to get an air chisel. I've already beat the snot out of that rear hub plate. I even used a seawall to try to get between the spindle and plate. Nothing yet.

 

[ScottyBoy]

How’s the pressure?

Oil pressure is about 20-30 psi at idle, and about 40ish when driving. Goes up to 50 on hard acceleration.

 

[ScottyBoy]

I can't picture the ears you're talking about. I got the 3 bolts out with no problem. I'm leaving it alone til tomorrow. Going to HF to get an air chisel. I've already beat the snot out of that rear hub plate. I even used a seawall to try to get between the spindle and plate. Nothing yet.

If you haven't already soaked it in PB Blaster or Liquid Wrench already, do that before hitting it with the air chisel.

 

[Tonyrodz]

If you haven't already soaked it in PB Blaster or Liquid Wrench already, do that before hitting it with the air chisel.

I sprayed it before leaving it alone for the night.

 

[Fless]

I can't picture the ears you're talking about. I got the 3 bolts out with no problem. I'm leaving it alone til tomorrow. Going to HF to get an air chisel. I've already beat the snot out of that rear hub plate. I even used a seawall to try to get between the spindle and plate. Nothing yet.

And soak it again.

Just making sure the three bolts you're saying you removed are the ones I've circled in red on the pic. After those are out from the back, I think what @TollKeeper was saying was to bang away sideways on the three ears that the bolts came through, hitting all three ears both ways, trying to rotate it.

If the bolts are sturdy enough, you could screw one in from the front and see if you could use a long prybar, pinned between the screw and the hub. Put some leverage on it to rotate it. I've never done one so I'm probably not all that helpful.

 

[BourbonNcigars]

I didn't do anything to my GMT800 today. Mainly because I no longer have one. But I did see what looked like a very well kept pre-2006 Z71 Tahoe. Considered just waiting for the owner to come out and make an offer but decided against it. I regret it now.

If it were a GMT400 4WD two door I'd still be there waiting if necessary.

 

[treehan77]

Cleaned the battle wagon up, clay, slight polish, some glaze/seal and finished it with a spray on ceramic.

 

[fast4door07]

what brand clay? Want to do basically what you just did on it

 

[Rocket Man]

And soak it again.

Just making sure the three bolts you're saying you removed are the ones I've circled in red on the pic. After those are out from the back, I think what @TollKeeper was saying was to bang away sideways on the three ears that the bolts came through, hitting all three ears both ways, trying to rotate it.

View attachment 352930

If the bolts are sturdy enough, you could screw one in from the front and see if you could use a long prybar, pinned between the screw and the hub. Put some leverage on it to rotate it. I've never done one so I'm probably not all that helpful.

I was wondering if @Tonyrodz had removed or at least loosened those up because he said he was hammering away but all his pics show those bolts still in. Tony?

 

[Sam Harris]

Cleaned the battle wagon up, clay, slight polish, some glaze/seal and finished it with a spray on ceramic.

Ooooh shiny!!

 

[Sam Harris]

Washed her today…

 

[Tonyrodz]

And soak it again.

Just making sure the three bolts you're saying you removed are the ones I've circled in red on the pic. After those are out from the back, I think what @TollKeeper was saying was to bang away sideways on the three ears that the bolts came through, hitting all three ears both ways, trying to rotate it.

View attachment 352930

If the bolts are sturdy enough, you could screw one in from the front and see if you could use a long prybar, pinned between the screw and the hub. Put some leverage on it to rotate it. I've never done one so I'm probably not all that helpful.

I was wondering if @Tonyrodz had removed or at least loosened those up because he said he was hammering away but all his pics show those bolts still in. Tony?

Sorry, yes I did remove those bolts after taking the pic. The pics I posted was right after I pulled that front of the hub off--well it basically fell off in my hand. I was trying to get as much done as quickly as possible, while being attacked by mosquitoes----plus I've been awake almost 24 hrs. I was beating the crap out of that rear hub plate, and I was also trying to hammer a pry bar, then a long screwdriver with no good results.
This is a ton of metal shavings stuck to the abs sensor. I'm still shocked the wheel didn't fall off!

 

[Rocket Man]

Sorry, yes I did remove those bolts after taking the pic. The pics I posted was right after I pulled that front of the hub off--well it basically fell off in my hand. I was trying to get as much done as quickly as possible, while being attacked by mosquitoes----plus I've been awake almost 24 hrs. I was beating the crap out of that rear hub plate, and I was also trying to hammer a pry bar, then a long screwdriver with no good results.
This is a ton of metal shavings stuck to the abs sensor. I'm still shocked the wheel didn't fall off!View attachment 352936View attachment 352937

I hope you got a new axle nut. You’re supposed to replace it anyway but especially since it was the only thing holding your wheel on so I’m sure it’s stressed.

https://ucare.inhersight.com/eeff054e-bff9-48f4-bc2c-c2c21b52bf79/-/format/auto/-/quality/lighter/-/progressive/yes/

 

[Tonyrodz]

I hope you got a new axle nut. You’re supposed to replace it anyway but especially since it was the only thing holding your wheel on so I’m sure it’s stressed.

https://ucare.inhersight.com/eeff054e-bff9-48f4-bc2c-c2c21b52bf79/-/format/auto/-/quality/lighter/-/progressive/yes/

Yup, got a brand new axle with a new nut waiting to go in.

 

[treehan77]

what brand clay? Want to do basically what you just did on it

I do t remember the brand anymore it’s blue lol. I use a clay mitt for most of of it, and the bar for the nasty stuff the mitt doesn’t get

 

[Walchit]

Parked mine today. Got a "Check oil Level" message on my instrument cluster. Checked my dipstick and the oil level was only a half quart low. Topped it off and the light is still on. I also noticed upon acceleration, I'm hear a very slight "diesel engine" type of pinging. Sounds similar to the Piston Slap that these engine get when they are cold. So I got spooked thing it's starved for oil, and I parked it till I can investigate further.

Idk how common it is, but when I had my pan off I just slightly wiped the little float thing for the oil level. Now I sometimes have the check oil level light, and it's plumb full. I kinda wish I would have put a new one in while I had the pan off.

 

[Walchit]

I hope you got a new axle nut. You’re supposed to replace it anyway but especially since it was the only thing holding your wheel on so I’m sure it’s stressed.

https://ucare.inhersight.com/eeff054e-bff9-48f4-bc2c-c2c21b52bf79/-/format/auto/-/quality/lighter/-/progressive/yes/

I should have put new axel nuts on mine too? I was watching some engine rebuild videos and some of them were saying you had to buy new head bolts or something too.