captainbrent

I have had my passenger side cv axle replaced after my old school alignment shop strobe balanced my tires(spin up fronts on truck at high speed) and replicated my high frequency vibe(rumble strip). We thought it had to be the cv shaft, unfortunately it wasn't the shaft and I still have vibe. This most recent time to alignment shop we spent some time trying to diagnose. After spinning up, we put a stethoscope on the differential housing extension on passenger side and found it to be very noisy, making us suspect the needle bearings for the axle shaft. Smooth until high speed and then the whole truck was buzzing while lifted on jacks. Now the hard part of convincing my dealer to pursue, as they insist there is no issue. This is extremely frustrating. I travel for my work with this truck and I am at 34,000 miles(problems started at 163miles) and finding time to pursue is difficult. I think that a lot of the problems being discussed on the forums is actually multiple items, some being tires, some being driveline. Or like in my case both. Fortunately I replaced the Oem tires with quality Nittos and now up to 64 mph it is smooth as silk. Then the rumble strip vibe comes in, but tires are still smooth. If I can't get any resolution, I guess I will have to address myself, it will probably cost me less than the downtime f...ing with GM. Oh by the way, I bought my wife a 2015 Jeep Wrangler(smooth as silk, and good q.c.)to replace her 2008 Tahoe instead of new Tahoe. So GM you need to wake up to this, I am not the only one you are losing sales to over this issue! 2015i GMC 3500hd cc4x4 Duramax

I have a 2015i 3500 4x4 srw Duramax, been vibrating since I brought up to speed with 148 miles on clock. Mine was a multifaceted problem that was a combination of the Good Year crap tires and a bent rim. After replacing rim and installing a set of Nitto Dura Graplers at my cost, the heavy shaking was removed only to discover the "rumble strip" driveline viberation. This has been noticed since around 5000 miles, now at 31,000 on the odometer. I have been to dealership 4 times only to hear "can't duplicate" , "normal operation". The vibe begins around 67mph and continues up to it phases out around 75 mph. Well everyone else that rides with me can feel it. I use a old school truck alignment shop that still strobe balances the front tires(spin up tires approx 80mph on truck). During the last 2 visits, the very experienced tech felt the vibration coming from passenger side front axle. Upon placing stethoscope on housing extension he felt the needle bearings that support axle shaft in housing is the culprit. Back to the dealer with the news, and they are refusing to address. They don't have a strobe balance machine to replicate, and won't send someone over to the independent shop to observe. And to top it off, found the dreaded rear main seal leak on the Duramax. I am sick, $54,000.00 investment, this is deplorable. 2015i GMC 3500hd cc4x4 Duramax

I just posted the other day in the HD forum, I have a 2015 3500 HD Duramax doing the exact same humming. Very interested in any new information. I know the only way I will get any resolution to this, will come from info on the forums. My local dealers are incompetent. 2015i GMC 3500hd cc4x4 Duramax