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2015 Yukon Denali - Cleaned throttle body today
Hello all, Sharing some pics of cleaning my throttle body at 140k. I have never cleaned it before(on this truck) and was a bit apprehensive after reading so many say they had issues after doing so - high idle/ unable to get it to relearn…..I had no issues. I bought a new TB gasket, and went...- SuperOldSchool
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- Replies: 6
- Forum: Engine & Drivetrain
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Changed my filter and fluid on 8l90 8 speed today
I followed a YouTube video and changed my 8l90’s filter and fluid today. I had dealer do the first time at 45k. 34k later it’s my turn. I bought a fluid extractor to suck most out of the pan first. The most time consuming step was getting the darn heat shield removed. The rest was easy. I...- SuperOldSchool
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- 8l90 filter change 8l90 fluid change
- Replies: 16
- Forum: Engine & Drivetrain
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2015 Yukon Denali dropped lifter at 77k miles
Filled up at gas station and pulling back out onto the road when I get a flashing CEL, stabilitrack and rough running engine. Got it 2 miles home and called dealer in am. Said to have it towed in. #6 cylinder had a failed lifter. Replaced under warranty. Now notice a coolant smell. Not...- SuperOldSchool
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- Replies: 6
- Forum: Engine & Drivetrain
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Replaced plugs and wires at 76k - 2015 Denali
Hello Sharing pics of plugs at 76k. Changed wires as well. Manual states 97,500 miles to do this, but I tend to do routine maintenance early, since I don’t drive in ideal conditions. Waiting until 100k might also make it hard to get plugs out... They look great. Probably no issues going...- SuperOldSchool
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- Replies: 13
- Forum: Engine & Drivetrain
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Coolant smell outside vehicle - TSB Present
My 2015 is in the shop today to fix a leaking radiator ( and 2 rear bumper side detection sensors). I noticed a coolant smell after pulling into the garage a while ago. Never leaked on the ground or able to see weeping on the radiator... Brought truck in today and they are now replacing the...- SuperOldSchool
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- Replies: 5
- Forum: Engine & Drivetrain
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2015 Yukon XL brake bolt torque specs
With online searches I am seeing different torque setting numbers for caliper bracket, caliper guide pins etc to replace all 4 brakes. Does anyone have 100% correct brake component torque specs for a 2015 model. Example below does not seem ‘for certain’...- SuperOldSchool
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- Replies: 1
- Forum: Street Suspension
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Don’t forget to flush your brake system - 3yrs or 45k
Hello all I’m anal about routine maintenance with all my cars. Just flushed the brake fluid from all 4 calipers this morning. The pedal feels more firm and I was surprised. Normally I can’t tell, so there’s proof it was a good time to do it. 51k on my 2015 Yukon. Manual states to do this...- SuperOldSchool
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- Replies: 32
- Forum: Engine & Drivetrain
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2015 Yukon - Change both diffs' oil and transfer case fluid early on
Just sharing my experience with everyone. 2015 Yukon Denali with 39k miles. I changed the gear oil in both differentials and the transfer case fluid today. Used Amsoil Severe Gear 75w-90 and their Synthetic ATF, which is compatible with Dexron VI. I wish I had done this at 5k or 10k...- SuperOldSchool
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- Replies: 9
- Forum: Engine & Drivetrain
