steveU
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Everything posted by steveU
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My shake was at speeds from 40 to 50 and it was solved by replacing the pinion.
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Also, I think most dealers don't have a clue what is going on because they are getting bad advice from GM. One GM engineer even told the service manager that they could replace every part on the truck and it would not fix the problem. One engineer told the shop where I bought the truck it is caused by the engine switching from V8 to V4. Give me a break. I don't think they want to admit there is a big problem out there coming from the rear end but the instrument does not lie.
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Yes they used a PICO on the truck and confirmed what I found to be the fix online. The vibration was coming from the gear and pinion in the rear differential.
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Drives smooth at 75. I was told the harmonic oscillation can occur at any speed. I would still have them check with there vibrational machine if the rear end is in spec at that speed. New tires and road force balancing did nothing for the vibration I was experiencing.
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Everyone that has the vibration listen up. My 2014 Sierra was fixed by having the rear end rebuilt. It turned out that there are bad seals in the rear differential so they replaced it and the pinion and a gear. Running smooth now. Background: Steering wheel shook at 40-52 mph especially when coasting to a stop. They tried new tires and road force balancing but that did not work. One GM engineer even told my service manager that they could replace every part on the truck and it would still shake. Don't take that for an answer. Paying 40+K for a vehicle and having that shaking is not acceptable. BTW, mine did not start until 5K miles and got worse until about 15K. Now I hope it is fixed at 19K. Good luck and hope this helps.
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Everyone that has the vibration listen up. My 2014 Sierra was fixed by having the rear end rebuilt. It turned out that there are bad seals in the rear differential so they replaced it and the pinion and a gear. Running smooth now. Background: Steering wheel shook at 40-52 mph especially when coasting to a stop. They tried new tires and road force balancing but that did not work. One GM engineer even told my service manager that they could replace every part on the truck and it would still shake. Don't take that for an answer. Paying 40+K for a vehicle and having that shaking is not acceptable. BTW, mine did not start until 5K miles and got worse until about 15K. Now I hope it is fixed at 19K. Good luck and hope this helps.
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Everyone that has the vibration listen up. My 2014 Sierra was fixed by having the rear end rebuilt. It turned out that there are bad seals in the rear differential so they replaced it and the pinion and a gear. Running smooth now. Background: Steering wheel shook at 40-52 mph especially when coasting to a stop. They tried new tires and road force balancing but that did not work. One GM engineer even told my service manager that they could replace every part on the truck and it would still shake. Don't take that for an answer. Paying 40+K for a vehicle and having that shaking is not acceptable. BTW, mine did not start until 5K miles and got worse until about 15K. Now I hope it is fixed at 19K. Good luck and hope this helps.
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I didn't say the seals caused the vibration. I just stated what they did.
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Everyone that has the vibration listen up. My 2014 Sierra was fixed by having the rear end rebuilt. It turned out that there are bad seals in the rear differential so they replaced it and the pinion and a gear. Running smooth now. Background: Steering wheel shook at 40-52 mph especially when coasting to a stop. They tried new tires and road force balancing but that did not work. One GM engineer even told my service manager that they could replace every part on the truck and it would still shake. Don't take that for an answer. Paying 40+K for a vehicle and having that shaking is not acceptable. BTW, mine did not start until 5K miles and got worse until about 15K. Now I hope it is fixed at 19K. Good luck and hope this helps.
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OK. After going through several hundred posts I found one that might fix my problem of having vibration at about 43-52 mph. The FSE fixed it by replacing the seal and pinion in the rear differential so after 2 visits to my Chevy dealer I told them what I found and they went ahead and confirmed that is where my vibration was coming from with their picometer. They went ahead and replaced the pinion, gear and seals which in turn fixed the vibration. I hope this post helps the next person with this issue because it is quite common in the 14 and 15's and some 16's. What a relief to have my sooth ride back. FIY...mine did not start until after 5K and got worse after 10K and then leveled out. The Muskegon, MI dealership did an excellent job. They also were very helpful in fixing the creaking spring noise in the driver's seat and the fast falling tailgate. Great job, Betten Chevy!
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OK. After going through several hundred posts I found one that might fix my problem of having vibration at about 43-52 mph. The FSE fixed it by replacing the seal and pinion in the rear differential so after 2 visits to my Chevy dealer I told them what I found and they went ahead and confirmed that is where my vibration was coming from with their picometer. They went ahead and replaced the pinion, gear and seals which in turn fixed the vibration. I hope this post helps the next person with this issue because it is quite common in the 14 and 15's and some 16's. What a relief to have my sooth ride back. FIY...mine did not start until after 5K and got worse after 10K and then leveled out. The Muskegon, MI dealership did an excellent job. They also were very helpful in fixing the creaking spring noise in the driver's seat and the fast falling tailgate. Great job, Betten Chevy!
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OK. After going through several hundred posts I found one that might fix my problem of having vibration at about 43-52 mph. The FSE fixed it by replacing the seal and pinion in the rear differential so after 2 visits to my Chevy dealer I told them what I found and they went ahead and confirmed that is where my vibration was coming from with their picometer. They went ahead and replaced the pinion, gear and seals which in turn fixed the vibration. I hope this post helps the next person with this issue because it is quite common in the 14 and 15's and some 16's. What a relief to have my sooth ride back. FIY...mine did not start until after 5K and got worse after 10K and then leveled out. The Muskegon, MI dealership did an excellent job. They also were very helpful in fixing the creaking spring noise in the driver's seat and the fast falling tailgate. Great job, Betten Chevy!
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OK. After going through several hundred posts I found one that might fix my problem of having vibration at about 43-52 mph. The FSE fixed it by replacing the seal and pinion in the rear differential so after 2 visits to my Chevy dealer I told them what I found and they went ahead and confirmed that is where my vibration was coming from with their picometer. They went ahead and replaced the pinion, gear and seals which in turn fixed the vibration. I hope this post helps the next person with this issue because it is quite common in the 14 and 15's and some 16's. What a relief to have my sooth ride back. FIY...mine did not start until after 5K and got worse after 10K and then leveled out. The Muskegon, MI dealership did an excellent job. They also were very helpful in fixing the creaking spring noise in the driver's seat and the fast falling tailgate. Great job, Betten Chevy!
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