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    Which fluid to use?

    Anybody know the fluid for the front diff in my 99 yukon? Is it 75w-90 or 80w-90?
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    TC lock-up trouble...

    Hey, guys. Wondering if anyone has had similar trouble with this? Is there a simple fix, or is my trans internals bad? Everytime I'm up to about 55-65mph and it goes into lock-up, it goes in really hard. Almost feels like a slip, hesitates, and then grabs. It holds lock-up just fine when it's...
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    Are they going to fit???

    So, it's time for new tires. So another dumb tire question. My 99 yukon has a 4 inch lift, and 3 inch blocks in the rear. I'm running worn out 285/75R16s now. They only measure to about 31 inches right now. I want to run 315/75R16s, but I don't want to spend the money amd order them if they...
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    Front driveline help, please...

    So, I've been getting a humming noise from what sounded like the left front wheel bearing since I bought the truck back in April. Usually only at freeway speeds around 60-70mph. Didn't put too much thought into it since I don't drive the freeway much, and just figured I'd tackle it this winter...
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    Body lift with existing 4" suspension lift

    My 99 tukon has already got a 4" suspension lift on it. I'm considering doing a 3" body lift. Just curious if this makes anything more difficult that a truck with stock suspension? Do the brake lines need to be moved or anything like that? I understand that the body lift isn't too difficult to...
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    '99 yukon SLT

    I'm back. Unfortunately I had to get rid of the 454. Had some financial struggles happen, and had no other choice. I sold it, and had to drive a beater '95 Camry with 250,000 miles on it. Life was rough for a minute. Ha ha. But I'm back, and got another Gmt400. I went back to the yukon life...
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    Ford guys, anyway...

    So, I have a coworker who has bashed on my truck since the day I bought it. Telling me that his truck can out tow mine, and his can hold a far heavier load, and how ugly my truck is. That it looks like an old man truck. How it's a waste of gas to have a big block, when his can work alot harder...
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    So... I did it

    I bought the truck. 98. 454 k2500. 99,603 original miles. Ecsb. 4"4 works great. Looks like a grandpa truck, but that's a great platform. First things first, ditch the shell. Crank the bars, and put in the rear blocks, and throw my 285s on the stock shelves until I can get different wheels. All...
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    What do you guys think? Possible new purchase

    Buddy from work is selling this. Wants $4500 for it. 98 2500 8-lug. Sle. 99000 original miles. 454. All stock... I would sell the Yukon, if I bought it...
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    Polished, or black?

    Which way do you guys think my wheels look the best? Solid black Skinny polished lip Fat polished lip Or fully polished
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    Those SOBs!

    Got to work today, and saw this pretty gmt400 sitting there. The salesmen had taken it in on trade last night. K2500, 6 lug, SLT. 96k. I ran up front, and told them I would have the money by the end of the day, and that I wanted it. Went up on lunch to get a dealer plate, to test drive it...
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    Brake light switch

    So I got pulled over yesterday, because my brake lights weren't working. I went home, and started checking things. Turns work. Fuses are good. Hazards work. But all three brake lights don't. I pressed the test button on my trailer brake controller, and sure enough, all three came on. So, I would...
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    Buzzing under dash?

    Not sure if this is the correct spot to post this. Recently I've noticed a strange buzzing, almost rapid clicking noise in my dash. Between the cluster, and climate controls. It happens at all times, and doesn't change with anything (headlights on/off. Blower on/off. Stereo on/off.) Assuming...
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    Putting in my two cents...

    So the old debate will always be just that... A debate. So I thought I would put in my opinion, considering I was the assistant manager for an exhaust shop for a few years. I always had to know the "latest, and greatest" about all types of different exhaust set ups. Hence, the reason I run with...
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    Shift linkage extension, and transfer case shifter?

    I searched through alot of pages on the body lift thread, and couldn't find any pictures of people doing this. Does anyone have pictures of this? Or those of you who didn't do so, what kind of problems have you had?
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    Truth about code 32

    The Yukon throws code 32 anytime I maintain speed at, or above 55mph. Now, I understand how EGR works, I've been a technician for many years. However, I've never heard of relating exhaust back pressure being needed for an EGR to operate properly. Now, I know these EGRs are negative pressure...
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    It was time for new tires... So I decided to go a little further

    Decided it's tire time, and was checking out the budget. Currently running some 285/75 R16, and figured my budget would allow me to get the same size again. As I was looking into it, my budget was a little better than I thought. So I went with some 315/75 R16. But wait, I'm on stock suspension...
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    To adjust, or not to adjust... That is the question

    So, I've been turning my head at my slightly leaking valve covers for quite some time now. I know, TBI with leaking valve covers, strange. Well anyway, I remembered the other day that I have a set of polished valve covers in my buddies garage, that came off of an old TBI 305 I had many years...
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    Update. Thoughts?

    Build thread... I guess So the third picture isn't actually my truck. But it's what mine basically looked like when I bought it 8 months ago. Since I bought it, I've played with it a bit. New idler and Putnam arms. New sway bar links all around. Larger piston truck shocks. Fabricated a...
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    Hello everybody

    Another new guy. I own a 95 yukon 4 door. 285/75 R16s. 3" magnaflow, no cat (changing the exhaust next month. I work in an exhaust shop, and we've got a killer idea for it once the shorties get here. Yes, shorties, I know. But I have two broken studs, and the headers are a freebie.) heads are...
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