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  1. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    I completed the 4-piston upgrade this weekend. So far I'm impressed with the performance, though not able to thrash it much yet. Since we also replaced the rear differential at the same time, I'll need to complete the break-in before I see how it works for trailering. For the cost, I say it's...
  2. SRQYukon

    Rearend warranty claim (ATK)

    Man, Swathdiver, you know your stuff. So I need to be sure that when the lube is changed after 500 miles, that NO limited-slip additive is used. Thanks for the detailed explanation.
  3. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Only about 20 miles around town. I don't plan on any changes until I drive it for a couple of weeks. I may decide to adjust the front coilovers up a little instead of swapping springs.
  4. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    I used a 100 grit flap disc, then a 180 flap disc for final sanding. You could probably do finer if you are going high gloss on the finish. I have no idea how long the caliper paint will last.
  5. SRQYukon

    Rearend warranty claim (ATK)

    So you're saying this is not a Posi-traction rearend at all? Or is it just not limited slip? So what does the G80 code really mean?
  6. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Finally got some pics with wheels on. And before anyone starts to criticize the stance, I know the rear is too high. I have another set of Eibach springs that are 1" lower, that will eventually go on. Right now I'm testing with the H&W 2'' drop spring but they're too high. Anyway, you asked to...
  7. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Hey blueinkd, the 2020 brake setup was the easiest part of the whole job. I had to play around with different washer thicknesses for a little while, but really very easy. The coilover setup costs around $1000. Makes a huge difference if you drive on bad pavement. My '03 1500 had a good ride...
  8. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    You win the first criticism award. Since it's not a show-truck, and the hubs are completely covered by the wheels, I don't care that they have a little scale.
  9. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    I took my angle grinder to the new calipers and smoothed the rough castings and took about 3/16" off the inner shoulder to be sure I had enough clearance for my 22" wheel. Glad I did that because the clearance on the driver side is only about 1/16". Anyway, after smoothing, I used a high heat...
  10. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Yep. I completely forgot to mention the Hellwig adjustable sway bar end links. Thanks, again TonyRodz.
  11. SRQYukon

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Today, I finally got around to a major suspension, brake upgrade, and differential swap (with the help of my son-in-law and another of his mechanics. In spite of major problems with the rearend sent to us by ATK (under a warranty claim), we accomplished a crazy amount of work in about 10 hours...
  12. SRQYukon

    Rearend warranty claim (ATK)

    Okay, I need to rant. Jan 2020 I sprang for a reman. rearend for my 2003 Yukon XL form ATK (purchase thru JEGS). Within a few hundred miles, I started having issues with the limited-slip clutches shuddering when making turns. I finally contacted ATK and they shipped a replacement. I've had it...
  13. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    If anyone thinks this upgrade is going to be equal to Brembo or Wilwood big brakes with 6-pistons and mega 16" rotors, then they're engaging in wishful thinking. But for those that want much better braking for less than 1/2 the cost of these aftermarket brake kits, it's an option. Once I get...
  14. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    Yes, you may be right, but this is the 2000-2006 section of the forum. So this thread was started to suggest an upgrade to the GMT-800 2-piston brakes which are grossly inadequate. The GMT-900 already had larger brakes (and rotors, I believe) so I wouldn't have expected as much difference...
  15. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    I couldn't tell which photo was the 17" and which was the 22". But it looks like a little grind on just the raised part of the casting would make it clear. I haven't installed mine yet, but my 22" snowflake wheels just barely cleared so I ground about 3/16" of the raised casting. It only took a...
  16. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    Sweet! No nerve struck, just in jest. I can't believe you did that! Wish I had the **** to try that with my $1100 phone. Wondering if it kills the Delta variant? Who needs hand sanitizer or microban when we've got this?
  17. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    Seriously? Maybe that was a joke. Why don't you clean your phone with BrakeKleen and get back to us? No, wait, just kidding. It will probably melt it.
  18. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    I never said it was necessary to upgrade the master cylinder. It was just a simple question "has anyone tried the Wilwood mc with the 2019-2020 4-piston setup?" I'm not trying to over-think it. I'm just trying to research all my options before I start the installation. I have no plan to replace...
  19. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

  20. SRQYukon

    Custom rear sway bar links

    It will be interesting to see how it feels. In regards to the angle, I don't really think that is too critical, as long as the end link is not at a severely skewed angle in relation to the sway bar end. Ideally, that angle would be close to 90°. That said, the purpose of the sway bar is to...
  21. SRQYukon

    Custom rear sway bar links

    Keep us posted on how this works out. Maybe you on to something. That's really what I was thinking of doing, but so many of the parts I looked at offered no real specifications. I ended up buying Tonyrodz Hellwig 8-11" adjustable end links, which I will try out in a couple of weeks. I'm hopeful...
  22. SRQYukon

    Horrible noises and ride, HELP!

    Did you ever resolve your issue? I never had the clunking sound, but I experience the horrible, almost unbearable ride after my 3/3 drop using Eibach lowering keys and rear coils. Finally scraped the whole kit and stater over with McGaughy's 2" spindles (reinstall stock keys) and Belltech rear...
  23. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    Nooooo!:eek:
  24. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    MGP has powder-coated aluminum for Tahoe/Yukon, but they're still a little cheesy and expensive, like
  25. SRQYukon

    4 Piston Big Brake Upgrade from 2019-20

    I agree with that. The double horseshoe openings on the outside look a little weird. Especially so when paint a bright color. I doubt they make a snap-on caliper cover that looks any better.

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