What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[iamdub]

So, the knock sensor on the side of the block...
If i remove the bolt, will antifreeze come out?


I'm looking for an easy way to drain the coolant, and not have it pour everywhere when i pull the heads.

Well my FSM hints that there might be some drain plugs on each side of the block, the picture is terrible.
Can't tell if it's the front or the rear of the engine... lol

Shined around with a flash light, i don't see any such plugs.
The knock sensors look to have a straight shot from my wheel well.

My hope is that i can remove the bolt on each side, let it drain in the driveway.
Then put it back in the garage to start tearing this pig apart.

Think i found the coolant drain plugs.
Back of the block.
big one right above my oil cooler lines.
Other one, right above the starter motor.

Nope. Knock sensors are blind holes. They have to pick up the vibes transferred in the block from the detonation knock, so they can't go into a coolant or oil galley.

The drains are located on the sides and take a really big hex ("Allen") wrench. It's been a looong time since I've removed them, but I used a nut (metric, I think) that fit the plug, screwed a bolt into the nut and welded it to the shank. The one on the passenger side is smaller, IIRC.

I pull the motors out so I don't bother with draining the blocks. I drain the radiator by removing the lower hose. Then I remove the hose from the water pump and use a shop vac to suck out as much water as I can from the water pump. I give the pump a few good spins while doing this. Then I remove the water pump and suck the water out of the coolant galleys on each side. This gets plenty out so that nothing is dripping when I pull the block out.

 

[Just Fishing]

Finally found the part numbers for the missing armrests on my captain chairs on the second row.

Prior owner decided they needed one more seat, and had a custom seat made.

In order to make that work they removed the arm rests and Capped them off with interior fluffy stuff.

Pretty neat since it's also a storage compartment, and looks totally stock when it's in seat mode.

Bad part, it won't fold with the seats.
Making life difficult for me... lol

Why oh why didn't they just make that center seat so it would clear the arm rests... lol

 

[Just Fishing]

Nope. Knock sensors are blind holes. They have to pick up the vibes transferred in the block from the detonation knock, so they can't go into a coolant or oil galley.

The drains are located on the sides and take a really big hex ("Allen") wrench. It's been a looong time since I've removed them, but I used a nut (metric, I think) that fit the plug, screwed a bolt into the nut and welded it to the shank. The one on the passenger side is smaller, IIRC.

I pull the motors out so I don't bother with draining the blocks. I drain the radiator by removing the lower hose. Then I remove the hose from the water pump and use a shop vac to suck out as much water as I can from the water pump. I give the pump a few good spins while doing this. Then I remove the water pump and suck the water out of the coolant galleys on each side. This gets plenty out so that nothing is dripping when I pull the block out.

When i saw them i hoped it would be like my vette (gen1 sbc).
The knock sensors plug the block drain.
Same on the 4.3 in my s10

With the location i hoped.
But that bolt does look a wee small.

Plan is to pull the lower hose.

I have a vac tool i can use to remove more coolant, and i have been looking at my shop vac as an option.

It would be nice to do a full drain, i have no idea how old that coolant is...

Plan is to back the hoe into the garage, should i decide to pull the engine it will make life easier...

Did a test fit last night, all looks good.
Today work starts!

Wish me luck

 

[Just Fishing]

Also planning to do the top half first, then i'll be clear to get the hoe on jack stands.

Was hoping to not roll around in coolant... lol

Oh well, wife wanted to replace some towels anyways.

 

[iamdub]

When i saw them i hoped it would be like my vette (gen1 sbc).
The knock sensors plug the block drain.
Same on the 4.3 in my s10

With the location i hoped.
But that bolt does look a wee small.

Plan is to pull the lower hose.

I have a vac tool i can use to remove more coolant, and i have been looking at my shop vac as an option.

It would be nice to do a full drain, i have no idea how old that coolant is...

Plan is to back the hoe into the garage, should i decide to pull the engine it will make life easier...

Did a test fit last night, all looks good.
Today work starts!

Wish me luck

Speaking of rolling it in and out of the garage: I rolled mine around, even up my mildly, but noticeably inclined driveway by myself. Grabbing the spokes of the wheels and pulling moves it much more easily than pushing the body, like by the A-pillar and window down. I kept a brick on the running board so if I needed to stop, I could quickly set that brick behind the wheel to keep it from rolling back down the driveway.

 

[Just Fishing]

Getting motivated now. nice and cold outside...
I have a garage heater, and 5 x 5 gal propane takes i had filled yesterday for it...




Getting stuff ready, i noticed the auto drain on my air compressor seems to be a bit frozen...
Compressor sits in a shed behind my garage, and i have a direct line for the 240 and a separate 110v.
Compressor shed i slapped together, i setup with the largest doors possible...
Original plan was to run some box fans with the doors full open when doing stuff like sand blasting to assist with cooling.
Read it was bad to split the 240 line for a 120 so i ran a separate for it.

Then i got to thinking about the cold winters and that poor compressor sitting outside with water at the bottom of the tank.
Found they make these wonderful auto drains, love it!

And with the direct lines from my fuse box panel, it makes for very easy control...
I always try and remember to flip the breaker off for the compressor when I'm done, today is a fine example of why this is a good idea.
I'm sure that if i left the power on for the auto drain, this wouldn't be a problem today, but meh...




Maybe I'll take a picture of my hideous compressor shed, it was more of an after thought...
fkd up with it a little.

My neighbor came over with a hammer drill and some mounting bolts and it got mounted!
The compressor is something like 400lbs +

Then i built a shed around it..
Original plan was to have a nice overhang on the front and sides.
it sits against the house and most of it sit's under the overhang from the garage...

While putting it together, i changed the plan and decided i didn't want to cut the backing boards thinking it would be easier and i'll get a larger shed.
Then totally forgot i needed to add more overhang on the sides.
Didn't notice until after i installed the shingles.

I blame beer.
but i can't stay mad at beer, so it's ok.


My wiring job is beautiful.

 

[Just Fishing]

Speaking of rolling it in and out of the garage: I rolled mine around, even up my mildly, but noticeably inclined driveway by myself. Grabbing the spokes of the wheels and pulling moves it much more easily than pushing the body, like by the A-pillar and window down. I kept a brick on the running board so if I needed to stop, I could quickly set that brick behind the wheel to keep it from rolling back down the driveway.

I don't think i would even try to move it my self.
Getting to old for that crap, and i sit behind a desk all day.

**I hoped to find a smiley with a walker to put here, but just imagine it!**


I move my boats around the yard a bit, i now have a hitch receiver mounted to the back of my riding mower to assist me.
[Insert old man meme/]

 

[gooffeyguy]

When i saw them i hoped it would be like my vette (gen1 sbc).
The knock sensors plug the block drain.
Same on the 4.3 in my s10

With the location i hoped.
But that bolt does look a wee small.

Plan is to pull the lower hose.

I have a vac tool i can use to remove more coolant, and i have been looking at my shop vac as an option.

It would be nice to do a full drain, i have no idea how old that coolant is...

Plan is to back the hoe into the garage, should i decide to pull the engine it will make life easier...

Did a test fit last night, all looks good.
Today work starts!

Wish me luck

I know the block drain on the driver's side is just in front of the motor mount bolt holes and is a rather large diameter plug that takes a hex/allen type wrench/socket

Sent from my SM-G930V using Tapatalk

 

[Just Fishing]

I know the block drain on the driver's side is just in front of the motor mount bolt holes and is a rather large diameter plug that takes a hex/allen type wrench/socket

Sent from my SM-G930V using Tapatalk

Found that one, a massive 17mm hex.
Right above the oil filter.

I actually have a hex socket that would fit.
However, it seems to require me to remove the oil cooler lines from the side of the pan to clear with an extension.
My plan was to do this real quick out in the driveway....
then get it back into the garage, fire up the garage heater, and get to to work.

I might try the smaller hex above the starter once it's on jack stands, 8mm i believe.
Then drain into a pan.

but i still will probably have the heads off before i get it onto jack stands...
lets see how motivated i am when i get that far...




I'm also glad i delayed a bit, totally forgot i had my nice boots on.

Old worn out boots on my feet, now time to start the work... w00t!

 

[Drok]

Had a squeaky brake pedal for the last couple weeks and was going to try to figure it out today at work ..... it didn’t squeak the whole way.