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

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Life_Of_TC

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Used to watch those back in the day at the old Spectrum stadium in Philly. Place was the size of a tin can with a roof. Talk about noise and fumes. Good old days.
I’m from backwoods lmao so we go to “Redneck Hill” at the local fairground and watch em or Highland County has one like every Saturday night during the summer and it’s really in BFE
 

Life_Of_TC

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JB Leather weld update for those who care, it’s not by any means perfect but it’s much better than the hole! Most of the ugliness is user error and I know that lol
 

alpha_omega

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cleaned blower motor, discovered my ac evaporator was filthy, mud in there from the dust and condensation i guess. sorry no pics im traumatized. might be good to replace heater core after all.. plus i thought i smelled coolant again this morning.
How long of a process was that from start to finish? Not counting the traumatization…
 

Sparksalot

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took 88 there and back stopped in pine grove at Gianninis for dinner haven't been there in like 20 years, price was decent $106 for a full course meal for 5
had one guy on the way back doing a pretty good pace in a accord (i think) but I am a challenger so he let me pass him and then stayed behind me for a while but couldn't keep up lol funny I'm pushing a 6000+lb tank thru a curvy mountain highway and nobody can keep up?
around 8 hours of highway driving and still sit's on 10.1mpg :driver:
I usually get a little better mileage thru the mountains but passed a bunch of boats near the end that probably wiped out any gains I had
Dang, that’s some memories. Some of my high school friends worked at Giannini’s. You know a few weeks ago.
 

mikez71

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How long of a process was that from start to finish? Not counting the traumatization…
Well, I'd say it was an hour for the blower motor only. (do-able in 30 mins)

Two screws on the little drain channel part (Same size as the 2 blower resistor screws.)

Odd size hex head screws I think it's 5.5mm, I had to use a smaller E torx socket. Maybe E8-E9 I forget...
but the screw that came with the filter kit for the block off panel was even smaller, possibly E7.
so a set of those little sockets is handy, $10 from harbor freight.

There is a little tab on the edge of the motor casing that you pry as you rotate the motor and it pops out.

You can pry the squirrel cage off with a couple prying tools. I used a scraper on one side which scratched the back of the motor housing (no biggie) and a thin piece of wood on the other side (to pry evenly) It takes a few prys, but you will notice it slowly sliding off as you work around it..

I used mostly a tube brush to get in there between the blades. Toothbrush a little lacking, but good for the nubs on the edge.
Then I blew out the motor with air, I'd recommend doing that outside, lots of fine brush dust or something will form a cloud.

Then you'll want to clean the insides so it will take more time!
I had the blower resistor off, and cut a hole for the filter.
The filter hole lets your run a wet paper towel/sponge in there with a long screwdriver to wipe the sides of the case.

Also put a hose on a vacuum with an angle cut to vacuum the evap core.
Also put my air nozzle in there to blow around the loose stuff, who knows how much stuff I blew further into the system, but some dirt did fly out the accessible side.
Turning on the fan later, I didn't notice any dirt flying out the vents.

So all told, I spent at least another hour, but I was cutting the filter hole and cleaning the blower resistor just because it looked a little crusty
Still plan to soak the core in some 409 cleaner.. but if I still smell coolant, I'm just going to wait until I gut that thing and replace heater and evap cores..
 

j91z28d1

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Well, I'd say it was an hour for the blower motor only. (do-able in 30 mins)

Two screws on the little drain channel part (Same size as the 2 blower resistor screws.)

Odd size hex head screws I think it's 5.5mm, I had to use a smaller E torx socket. Maybe E8-E9 I forget...
but the screw that came with the filter kit for the block off panel was even smaller, possibly E7.
so a set of those little sockets is handy, $10 from harbor freight.

There is a little tab on the edge of the motor casing that you pry as you rotate the motor and it pops out.

You can pry the squirrel cage off with a couple prying tools. I used a scraper on one side which scratched the back of the motor housing (no biggie) and a thin piece of wood on the other side (to pry evenly) It takes a few prys, but you will notice it slowly sliding off as you work around it..

I used mostly a tube brush to get in there between the blades. Toothbrush a little lacking, but good for the nubs on the edge.
Then I blew out the motor with air, I'd recommend doing that outside, lots of fine brush dust or something will form a cloud.

Then you'll want to clean the insides so it will take more time!
I had the blower resistor off, and cut a hole for the filter.
The filter hole lets your run a wet paper towel/sponge in there with a long screwdriver to wipe the sides of the case.

Also put a hose on a vacuum with an angle cut to vacuum the evap core.
Also put my air nozzle in there to blow around the loose stuff, who knows how much stuff I blew further into the system, but some dirt did fly out the accessible side.
Turning on the fan later, I didn't notice any dirt flying out the vents.

So all told, I spent at least another hour, but I was cutting the filter hole and cleaning the blower resistor just because it looked a little crusty
Still plan to soak the core in some 409 cleaner.. but if I still smell coolant, I'm just going to wait until I gut that thing and replace heater and evap cores..


I don't know if it would make a mess now that you cut the filter hole. but I've used one of those cheap pump sprayers with some water in it to stick up in there and spray out the dirt and stuff from the core. it didn't have enough pressure to hurt anything and not enough volume over flow the drain. even thou I won't lie I've used a garden hose before inside to spray them out haha. but I didn't car much about that old car.
 

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