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    Updated Thermal Control Valve

    86774933 i ended up buying mine from eBay for $56 including shipping. The seller is Everett Chevrolet. I got the seal from RockAuto for $2. What is this chatter about 2015’s having a different fitting? If that’s true then ill have to modify my valve in lieu of using this part. I’ll sell it to...
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    How would you test drive a 2015 Yukon with 102k?

    Picked mine up yesterday for $29k (92.5k miles). Thankfully the selling dealer (Jeep/Dodge) also owns a Chevrolet dealership. I asked them to give me a full service history for any dealer work and they emailed me a .pdf of all work performed at any GM dealer. It also included a list of any...
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    Genuine GMC OEM OE Splash Guards Mud Flaps Black Rear 22922769

    Still for sale? I’ll take them.
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    Aircraft Landing lights Behind the Grill

    I did something similar with my Corolla. These are Hella 500 series housings ($50) and I installed Hella 130 watt bulbs in each ($12 pair). I wired them to activate automatically via relay when I trigger the high beam lamps. Insane brightness; I lit up an ELK with these on my way to work. These...
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    Body panel adhesive?

    3M body panel adhesive (with the special gun) or just get a $20 tube of TigerSeal. You can use a regular caulk gun for that. I have both and use both for various things. The TigerSeal is a urethane adhesive and works great holding Lear “OEM” lookalike fender flares to my NNBS Tahoe after the 3M...
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    How would you test drive a 2015 Yukon with 102k?

    I think the new replacement OE valve part number is 86774933. Has a full-open temperature of 158F versus 194F.
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    How would you test drive a 2015 Yukon with 102k?

    I installed a Tru-Cool trans cooler in my ‘09 Tahoe that includes a cold weather bypass valve. I’m curious if removing the K2’s thermostatic valve will cause the trans to run TOO cool for those in the North. For the trans to run efficiently it needs to be 170+ degrees F? Is the shift kit worth...
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    How would you test drive a 2015 Yukon with 102k?

    I'm not trying to hijack this thread; I'm also very close to purchasing a very clean '15 Yukon XL SLE (with HD tow) that has 93k miles for $29k. I currently drive a '09 Tahoe LT2 that I also bought with 93k and it now has 166k. It has served me well but with three kids and long road trips...
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    Rear AC lines: anyone build their own hoses?

    I see that there are $350 to $400 kits that have high-pressure hoses with the proper fittings. I go to coldhose.com and see I can basically build the same set for $120 plus the $109 for a Chinese made crimper. Anyone actually do this? I bought mine with the rear AC lines already blocked off. I’m...
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    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Yes there is a 12v hot and ground there. Use a multimeter and you can stick it in the rear of the connector. Start by doing a continuity check with body ground to find the ground wire in the harness; probably a black or brown wire. Then lol for a +12V accessory or constant depending on what you...
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    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    CRC Marine HD Corrosion Inhibitor is referred to as the preferred solution in many comparison tests. Can be had for about nine bucks a can if you buy it by the case. Stuff goes on as a thick liquid but dries hard. I’d do this work in the summer when it is warm (regardless of what flavour you...
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    Any tricks for emptying rear air shocks?

    Dude just get the Air Lift 25804 kit to adjust it on-the-go. It’s only $100-130 for the full kit.
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    TRANSMISSION Oil Cooler Retrofit

    There’s nothing wrong with the Trucool. I like mine with the cold weather thermostatic valve.
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    TRANSMISSION Oil Cooler Retrofit

    Trans cooler output AT at the trans is VERY tight due to the front driveshaft. I used the original fitting and used my brake flaring tool (bubble flare) to keep the hoses from slipping off.
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    AFM disabler and mpg?

    To the guy who recommended a Chinese Tech 2: how is this done? I own a Tech 2 and did not see any option to do this. To the OP: I’d consider HPTuners if you want a “one stop shop” to delete the AFM service electronically and to be able to make a custom tune yourself. You’ll need wideband O2...
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    Finally Jumped on the Oil Catch Can Bandwagon

    I did an oil change a few days ago and emptied mine. I would guess that I have driven 500 miles since I last checked this. It is about 12 ounces. My commute is about ten minutes now and I use the remote start a lot.
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    Decided to sell my 2015 Tahoe LT, but how ?

    I just did a GMTV and the offer wasn’t anything to complain about. They offered 22-24k for my fiancé’s ‘17 Wrangler Unlimited. I’m not insulted. Retail is $29-31k and Mannheim Market Report shows actual wholesale auction data for comparable Jeep’s going for $26-29k. I also ran queries for other...
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    2011 Tahoe/Bad engine ticking, 153k miles

    Odd. That sounds like my old Suburban 2500: It was determined to be a spun bearing.
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    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    You could get $25 on eBay for it. You’ll also need to replace the brass threaded freeze plug and lost coolant. It would be absolutely foolish to remove it. Not that hard to install. I did mine in my driveway. While I was there I drained, flushed, and replaced the coolant.
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    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    I’m considering pluggin mine in before I have to run to Ace hardware. But I have 5W -30 synthetic on board and it’s only minus 15 right now.
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    Oil catch can options

    Come to think about it, I haven’t inspected the induction system for the milky emulsion since I’ve installed the catch can system. I get a ton of emulsion in the catch can though.
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    Oil catch can options

    I’m not sure how that moisture laden emulsion gets there. Every time I’ve pulled my plastic intake off (5.3 and 4.8) I’ve seen a pool of the milky emulsion sitting in there.
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    Oil catch can options

    Don’t forget to check your engine oil level after emptying the can. I suppose you could reuse the collected oil after letting the water settle out. I check mint every couple weeks in the winter and I get a ridiculous amount of oil and water collected.
  24. T

    Link to 2007-2009 Tahoe Suburban Yukon Esky factory service manual

    I guess the link is still working as of today.
  25. T

    New here. Michigan. 2009 Tahoe SSV

    My ‘09 2LT 4X4 has the 6L80 Build Date: 2009-08-24 MYC / TRANSMISSION AUTO 6 SPD, HMD, 6L-80 6-SPD A/TRANS(MYC)

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