2016 GMC Vibration on highway
I am shopping for a new one ton truck for a new truck camper. We really like the looks and interior of the GMC double cab/long bed SLT. Took it for a test drive and it had a horrible vibration at 65...
Forum Discussion
Search the DuraMax forum and you will find a long thread regarding GMs having a problem with vibrations in the 65-75 mph. Its been a year since I visited the thread so I'll be the first to acknowledge I am not up to date.
The vibration issue was hit or miss and not consistent from vehicle to vehicle or year to year. Most of the focus suggested re-balancing tires using the road force method which also produced mixed results.
Thread opinions also suggested the vibrations came from the drive shaft or the drive shaft connection to the rear end or the ring and pinion to axle connections. Certainly vibration could be caused by anything which spins.
Surprisingly, all "fixes" were with rims and tires mounted. If I experienced vibration, I would put the vehicle up on jacks and remove the wheels and tires and slowly spool the truck up to speeds. If you feel vibrations without the wheels and tires then you've got drive-line problems. A large pan of water positioned in the bed over top of the rear end would be a quick and good vibration indicator.
It would be wise to never believe a good tire balance will cure a vibration problem. Drive line problems can be a real nightmare to diagnose and solve. I'm of the opinion any manufacture would not be accommodating to address vibrations caused by drive line issues.
The vibration issue was hit or miss and not consistent from vehicle to vehicle or year to year. Most of the focus suggested re-balancing tires using the road force method which also produced mixed results.
Thread opinions also suggested the vibrations came from the drive shaft or the drive shaft connection to the rear end or the ring and pinion to axle connections. Certainly vibration could be caused by anything which spins.
Surprisingly, all "fixes" were with rims and tires mounted. If I experienced vibration, I would put the vehicle up on jacks and remove the wheels and tires and slowly spool the truck up to speeds. If you feel vibrations without the wheels and tires then you've got drive-line problems. A large pan of water positioned in the bed over top of the rear end would be a quick and good vibration indicator.
It would be wise to never believe a good tire balance will cure a vibration problem. Drive line problems can be a real nightmare to diagnose and solve. I'm of the opinion any manufacture would not be accommodating to address vibrations caused by drive line issues.
