What did you do to your OBS GMT400 Tahoe/Yukon Today?

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07Burb

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Ok, I’ll bite.

What is that parked in the garage? A 73-87 is on my list of things that I don’t need to buy but really should.


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77 longbed. Build thread over on gmsquarebody.com :)
 

1BADI5

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That's bad about the wringing off the bleeder screws. Still, wheel brake cylinders are cheap, and the calipers can either be taken off and have a removal tool used, or a rebuilt caliper used. They're just over $100.00 per pair.

Well I replaced both rear wheel cylinders and both front calipers for under $65.

Bled the lines and now I'm good to go.......brakes better then it ever has. The main issue was the drivers side rear wheel cylinder was seized closed.

Next up.............. new AC compressor, Hi side fitting, orifice tube and re-fill. Boom, rolling like its 1999 again...nice an chilly
 

DallasTahoe

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Pulled out my transfer case a lil bit ago, taking it to a local shop that specializes in them and hopefully not gonna spend too much money, $200 for sure for a heavy duty aluminum back half....


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DallasTahoe

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Dropped off my transfer case, they pulled it apart in front of me and checked it all out, so it needs a chain, pump, clutches and they’re going to replace the plastic cage bearings with bearings that have steel cages, new seals, new heavy duty aluminum backhalf, and new speed sensors. They’ll replace anything else we didn’t see, Not quite a full rebuild but pretty much, $500 total! Not bad at all, i probably could have done it myself but with the cost of a rebuild kit and getting the right tools to do it, and the fact it will be done same day by a professional that does this everyday I think it’s a way better deal


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petethepug

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Not too many places left that have the skills or care enough to do a tear down in front of a customer. In the past decade I’ve paid it forward to the pros and buy em lunch.

During my apprenticeship there were a few who noticed we not gotten a real lunch for weeks or the time/money to take one. Those people who noticed hard work and brought me a sandwich and coffee bagged to go made it all worthwhile.


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DallasTahoe

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Not too many places left that have the skills or care enough to do a tear down in front of a customer. In the past decade I’ve paid it forward to the pros and buy em lunch.

During my apprenticeship there were a few who noticed we not gotten a real lunch for weeks or the time/money to take one. Those people who noticed hard work and brought me a sandwich and coffee bagged to go made it all worthwhile.


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Yea I agree, it’s hard to find. This is actually a pretty big company here in dallas, they do everything from engines to front diffs, and each part of it is handled by in different departments, so a guy that usually builds heads won’t be putting together a transfer case. They were gracious enough to answer all my questions over the course of a few visits, walk me into the rebuild area, show me differences in what they use versus what everyone else uses, and they cut me a hell of a deal to boot! If you’re in DFW and need anything drivetrain/motor related check out Bishop International.


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petethepug

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I used to be out in DFW or Austin every other month. The planes trains and automobile day are gone so missed my chance to get out there. FYI there is an Factory authorized Sanden compressor rebuilder in DFW that made some custom hose adapters for me 3-4 years ago. It’s a bummer everybody’s leaving LA to get out of our EPA and sales tax trap.


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DallasTahoe

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Since the transfer case is out decided to clean up the transfer case wiring and added new speed sensor plugs and finally put new universal joints for the rear driveshaft, front shaft is already done


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TARDIS

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Man i would like to do this. Did you have it done at a shop?

I did not do the replacement A/C system. I had my local shop do it. From evaporator to compressor, lines, and accumulator. The guys there are great.

Then I ran new duct work and a new cage blower under the dash. Luckily, all the actuators and resistors could be reused.

Right now I'm working on an air circulation system in place of the useless 4x10s in the rear roof, using an OEM Suburban Rear A/C controller. I powered the controller using T-Tap connectors from the map lights and a Grey (Key-On) line form the stereo.

I fished lines to the rear speaker housing. I got a side load 252cfm 4" fans.
(Like this, but not this one)

Breathing in a few inches away, the fan exhausts in the opposite direction. This circulates the 51.7 cu.ft. of air in the cargo and rear seats 3 times per minute. It does not provide any heating or refrigerating, but it does move the air from the front to the back a lot faster.

Plus they're mounted under the speaker cover so it doesn't look out of place.
Problem is, I need 3 wire fans to adjust the speed, so I need to return and re-order.

Originally I used a laundry dryer PVC exhaust with fins to direct the air. It was too deep and unnecessary. An easier way to direct the exhaust was to attach a 45 degree elbow to the exhaust.

8F7AC10A-FA0F-47CB-A031-FC06D6806292.jpeg 5DE27EC2-0BC9-43FE-839C-19B3D3231DB8.jpeg
 
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Squirrelsmith

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I did not do the replacement A/C system. I had my local shop do it. From evaporator to compressor, lines, and accumulator. The guys there are great.

Then I ran new duct work and a new cage blower under the dash. Luckily, all the actuators and resistors could be reused.

Right now I'm working on an air circulation system in place of the useless 4x10s in the rear roof, using an OEM Suburban Rear A/C controller. I powered the controller using T-Tap connectors from the map lights and a Grey (Key-On) line form the stereo.

I fished lines to the rear speaker housing. I got a side load 252cfm 4" fans.
(Like this, but not this one)

Breathing in a few inches away, the fan exhausts in the opposite direction. This circulates the 51.7 cu.ft. of air in the cargo and rear seats 3 times per minute. It does not provide any heating or refrigerating, but it does move the air from the front to the back a lot faster.

Plus they're mounted under the speaker cover so it doesn't look out of place.
Problem is, I need 3 wire fans to adjust the speed, so I need to return and re-order.

Originally I used a laundry dryer PVC exhaust with fins to direct the air. It was too deep and unnecessary. An easier way to direct the exhaust was to attach a 45 degree elbow to the exhaust.

View attachment 204525 View attachment 204526
very cool
 

1BADI5

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Well the 02 Silverado master cylinder mod was money well spent, not to mention having new clear brake fluid in the truck; I don't think the DOT3 had ever been flushed
 

fastpat

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Well I replaced both rear wheel cylinders and both front calipers for under $65.

Bled the lines and now I'm good to go.......brakes better then it ever has. The main issue was the drivers side rear wheel cylinder was seized closed.

Next up.............. new AC compressor, Hi side fitting, orifice tube and re-fill. Boom, rolling like its 1999 again...nice an chilly

BMW recommends bleeding the entire brake system every two years which would prevent problems like seized bleeder screws and bad wheel cylinders/stuck caliper pistons for the most part.

While I doubt most of us will do that task quite that often, I wouldn't go beyond five years between system bleeds. There is just no way to keep moisture out of the brake fluid which rusts lots of components.
 

qukon 95

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Why did you need it rebuilt the transfer case,can you drive it without the transfer case on it.
 

fastpat

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Installed a heavy duty rack basket. It fits and clamps to the OEM roof rack. The red on the basket are polyurethane seals to keep most of the water away from the tubes to reduce rust. The shiny plastic near the front is a wind shield. Maximum cargo weight is 150 pounds which makes sense since the OEM rack max is 200 pounds and the basket weighs 50 pounds. I like the increase in utility the basket gives me.

2v2JqeWDNxQKds.jpg
 

Shadowz Edge

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I'm in the middle of planning out my tool purchases for rebuilding the transmission very soon.
 

DallasTahoe

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Got baby some new shoes the other day off of overland market, brand new Toyo open country a/t 285-75-17 with new Pro Comp wheels $500 cash not a bad deal, and just in time for my two week camping trip to Colorado!


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