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Like the thread cracking jokes about F150's, beer cans and Fiats..

I'm a moderator and I have yet to come across that own haha, I moderate the k2 section and it's a lot of work so I don't really "get out and explore" much haha

 

 

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I'm a moderator and I have yet to come across that own haha, I moderate the k2 section and it's a lot of work so I don't really "get out and explore" much haha

 

 

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Its the "Aluminum Ford = no thanks!" thread. Its got a few good zingers in it.

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I have a 2015 GMC Sierra All Terrain. I bought it new and test drove it but did not notice any problems. Well, started driving highway miles and noticed the steering wheel vibrates at speeds over 60mph. Never in my dreams would I imagine a $40k plus truck would have any issues like this. I took it back to the dealer and rebalance the wheels. Didn't work. Went back a week later and they Road Forced Balanced the wheels. Well, I still notice the vibration in the steering wheel at speed above 65mph. Its not constant but noticeable. I will go back to the dealer again but not sure what more they can do. What recourse do I have? Whats next, new tires? I am starting to regret buying this truck. I had a 2014 F150 that I traded in for the GMC and it did not have any problems. Thought I was upgrading.

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I have a 2015 GMC Sierra All Terrain. I bought it new and test drove it but did not notice any problems. Well, started driving highway miles and noticed the steering wheel vibrates at speeds over 60mph. Never in my dreams would I imagine a $40k plus truck would have any issues like this. I took it back to the dealer and rebalance the wheels. Didn't work. Went back a week later and they Road Forced Balanced the wheels. Well, I still notice the vibration in the steering wheel at speed above 65mph. Its not constant but noticeable. I will go back to the dealer again but not sure what more they can do. What recourse do I have? Whats next, new tires? I am starting to regret buying this truck. I had a 2014 F150 that I traded in for the GMC and it did not have any problems. Thought I was upgrading.

unfortunately you thought wrong... we all did

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More of the same for HD GM trucks. This is really depressing for a potential buyer.

 

http://www.gm-trucks.com/forums/topic/164602-2015-gmc-2500hd-crewcab-duramax-vibration/page-1

 

I am beginning to suspect that some of these vibration problems are caused by improperly machined rear axle housings. In this case the pinion shaft/gear and ring gear will not mesh at the proper angle and the vibration usually shows after a thousand miles or so. Also, the misaligned pinion shaft may cause the driveshaft to move in an eliptical manner, causing vibration, even if the drive shaft itself is good and properly balanced. Years ago i had a problem with an OMC/Volvo Penta SX outdrive on a new boat. After about 20 hours it started rattling like a bucket of bolts. it was rebuilt under warranty twice, all bearings replaced, gears reshimmed and it always ran for about 20 hours great after each rebuilt. Then the rattling came back with a vengeance. Finally I complained to the CEO of the company and got the entire drive replaced under warranty. Never had any problems with it again. The mechanic who rebuilt the drive strongly suspected bad machining of the old unit, which made rebuilding a waste of time. If something like this is the case with the axle housings on these trucks, replacing pinion and ring gears will fix the problem for a few weeks. It would also explain why the vibration does not show during test drives or first few hundred miles. If the housing is properly machined and the gear backlash is set wrong, the axle will typiclaly start whining after about 1000 miles of use. This happened to my 1995 Nissan pickup. The axle started whining only under load after about 1500 miles. Then they replaced the entire differential under warranty and all was quiet for another 1000 miles and it started whining again, but this time only during coasting (i.e. under no load).

 

 

I would request a complete rear axle assembly if they wanted to replace just ring and pinion gears. There is a post by a Chevy Colorado owner who had his vibration fixed when entire rear axle assembly was replaced (see 2nd post in the link).

 

http://www.gm-trucks.com/forums/topic/174291-2015-coloradocanyon-shakes-vibrates/

Edited by pm26
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I would request a complete rear axle assembly if they wanted to replace just ring and pinion gears.

 

I asked the mechanic working on my truck if he had actually had to do this with any of the shakers he worked on and he said GM is telling them only to replace ring and pinions because they don't have enough rear axle assemblies.

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I would request a complete rear axle assembly if they wanted to replace just ring and pinion gears.

 

I asked the mechanic working on my truck if he had actually had to do this with any of the shakers he worked on and he said GM is telling them only to replace ring and pinions because they don't have enough rear axle assemblies.

 

More of the same for HD GM trucks. This is really depressing for a potential buyer.

 

http://www.gm-trucks.com/forums/topic/164602-2015-gmc-2500hd-crewcab-duramax-vibration/page-1

 

I am beginning to suspect that some of these vibration problems are caused by improperly machined rear axle housings. In this case the pinion shaft/gear and ring gear will not mesh at the proper angle and the vibration usually shows after a thousand miles or so. Also, the misaligned pinion shaft may cause the driveshaft to move in an eliptical manner, causing vibration, even if the drive shaft itself is good and properly balanced. Years ago i had a problem with an OMC/Volvo Penta SX outdrive on a new boat. After about 20 hours it started rattling like a bucket of bolts. it was rebuilt under warranty twice, all bearings replaced, gears reshimmed and it always ran for about 20 hours great after each rebuilt. Then the rattling came back with a vengeance. Finally I complained to the CEO of the company and got the entire drive replaced under warranty. Never had any problems with it again. The mechanic who rebuilt the drive strongly suspected bad machining of the old unit, which made rebuilding a waste of time. If something like this is the case with the axle housings on these trucks, replacing pinion and ring gears will fix the problem for a few weeks. It would also explain why the vibration does not show during test drives or first few hundred miles. If the housing is properly machined and the gear backlash is set wrong, the axle will typiclaly start whining after about 1000 miles of use. This happened to my 1995 Nissan pickup. The axle started whining only under load after about 1500 miles. Then they replaced the entire differential under warranty and all was quiet for another 1000 miles and it started whining again, but this time only during coasting (i.e. under no load).

 

 

I would request a complete rear axle assembly if they wanted to replace just ring and pinion gears. There is a post by a Chevy Colorado owner who had his vibration fixed when entire rear axle assembly was replaced (see 2nd post in the link).

 

http://www.gm-trucks.com/forums/topic/174291-2015-coloradocanyon-shakes-vibrates/

So how would the PICO scopes analyze this vibration? Would it be in the same harmonics as a tire / wheel?

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Read (Consumer Rpts) that 85% of Ford F-150 (2015) buyers would buy again. Only 74% would buy GM 1500 again.

Sad. No surprise if Fiat or even Nissan, but GM? If they lose their truck customers who will pay the bills? Not the taxpayers.

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Wow was I surprised to find the 455 pages of vibration issues with the 2014 and newer GM trucks....I bought one after having a 2002 extended cab for 245,000 miles and still riding smooth, what a big mistake, thinking I would get similar results with my 2014 Silverado double cab, standard box 2wd LT Sport edition w/20" rims....right?...How wrong I was!!!!!

 

I bought my silvershaker late in 2013 and first noticed a slight vibration at highway speeds (70+mph) after a couple thousand miles, took it in and paid for tire balancing and was told the 20's were what was the difference in the ride quality. The majority of my driving is local with the ride being smooth below 70mph and it still is today. The dealership continued to give excuses for the vibration with the focus on the tires (Continental) so after 30K it was time for a change.

 

Now with 22's and 305/45 Coopers road forced balanced close to perfection, my silvershaker is continually getting worse which led me to swap my wheel and tire setup with a friend with a non-shaker 2015 (he's got lucky). His truck is still smooth with my wheels and no vibration relieve with his wheels (18's) on my silvershaker.

 

IT'S NOT THE TIRES. GM KNOWS IT......I ALSO KNOW IT NOW!!!!

 

Hence my research which led me here, what a dumb ass I was to listen to anyone at GM with BS about tires. Makes one wonder how many others are unaware of the issues GM is having and is prolonging to resolve.

 

I will be dumping my GM disappointment and have some advice for all others: AVOID ALL 2014 AND NEWER GM TRUCKS.

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