# Terrible vibration between 72-77mph **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** yukon-xl, gmc\ **Created:** [February 12, 2020, 8:08pm UTC](https://community.cartalk.com/t/terrible-vibration-between-72-77mph/158398 "2020-02-12T20:08:53Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![aaron.dolski\_163241](https://avatars.discourse-cdn.com/v4/letter/a/aca169/32.png) [@aaron.dolski\_163241](https://community.cartalk.com/u/aaron.dolski_163241)\ **Post date:** [February 12, 2020, 8:08pm UTC](https://community.cartalk.com/t/terrible-vibration-between-72-77mph/158398/1 "2020-02-12T20:08:53Z")
Hello. Vehicle in question is a 2007 GMC Yukon XL 4x4 5.3 I recently did work on my truck and now there’s a terrible vibration (not to be confused with a shake) at about 72mph-77mph. Outside of that range, it drives fine. The work I did… replaced u-joints. While drive shaft was out I replaced rear seal on transfer case. During the process of replacing seal, I noticed transfer case fluid was black so I drained and filled with new transfer case fluid. Replaced front right half shaft. This is all the work I did between the ‘before & after’ of the vibration. Any feedback would great. Thanks for reading. ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [February 12, 2020, 8:20pm UTC](https://community.cartalk.com/t/terrible-vibration-between-72-77mph/158398/2 "2020-02-12T20:20:40Z")
Did you replace the drive shaft back in the same orientation it was before if so it may be needed to taken shop to get balanced. ---
**Author:** ![aaron.dolski\_163241](https://avatars.discourse-cdn.com/v4/letter/a/aca169/32.png) [@aaron.dolski\_163241](https://community.cartalk.com/u/aaron.dolski_163241)\ **Post date:** [February 12, 2020, 8:53pm UTC](https://community.cartalk.com/t/terrible-vibration-between-72-77mph/158398/3 "2020-02-12T20:53:00Z")
Thanks for the reply. I did not mark the shaft unfortunately so it’s likely in a different position, however, I’ve read that with my truck it doesn’t matter. I may just remove it, rotate it and put it back in. See if that changes anything. But the vibration is only between 72-77mph which is odd. ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [February 13, 2020, 1:49am UTC](https://community.cartalk.com/t/terrible-vibration-between-72-77mph/158398/4 "2020-02-13T01:49:41Z")
Does it happen if you leave it in d3? Overdrive issue? ---
**Author:** ![aaron.dolski\_163241](https://avatars.discourse-cdn.com/v4/letter/a/aca169/32.png) [@aaron.dolski\_163241](https://community.cartalk.com/u/aaron.dolski_163241)\ **Post date:** [February 13, 2020, 1:52am UTC](https://community.cartalk.com/t/terrible-vibration-between-72-77mph/158398/5 "2020-02-13T01:52:27Z")
It’s just in regular drive. Haven’t tried it in any other gear. I’ll try tomorrow. Thanks ---
**Author:** ![thegreendrag0n](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thegreendrag0n/32/9265_2.png) [@thegreendrag0n](https://community.cartalk.com/u/thegreendrag0n)\ **Post date:** [February 13, 2020, 4:08am UTC](https://community.cartalk.com/t/terrible-vibration-between-72-77mph/158398/6 "2020-02-13T04:08:30Z")
couple of years back I replaced U-joints on my Pathfinder and I’ve got quite a bad vibration around 60-70 MPH I removed the shaft and started re-checking everything, when I noticed that one of the cups was pressed in visually deeper than another when looking on it from the inside, on outside they were the same I checked if stopper rings were properly installed and snug and if cups were pressed against rings, and they were then I removed the joint and cups under question and measured them with a caliper, and it was something like 1 mm difference in their size, which is huge in the terms of precision needed there to balance properly this join was also “overly stiff”, confirming the issue U-joints were AC-Delco from RockAuto, not some garbage I filed warranty case with RockAuto and they sent me replacement joint quite fast, after reassembly everything was just fine