Vibration and noise in front differential (awd) while turning ?
Feb 5, 2010 | 02:26 AM
#1
Vibration and noise in front differential (awd) while turning ?
I'm trying to get an idea of what is going on with my truck before I take it down to the shop and start taking things apart.
Basically when I drive for long distances on the highway, when I turn the wheel sharply, like to turn into a parking spot, and start to drive, it vibrates bad like I have a flat tire or something and makes some noise. When i first get in the truck i can turn the wheel as far as it will go and turn with no noise or vibration. But if I drive on the highway for 20 minutes or longer it starts acting up when I make sharp turns(sharper than a 45 degree angle), and it gets worse the longer I drive.
I'm going to take it to my dad's shop and get it on the lift and try to check it out, but I figured I would see if anyone could give me some ideas on what to check. Maybe it is a common problem or something for awd. Thanks
Basically when I drive for long distances on the highway, when I turn the wheel sharply, like to turn into a parking spot, and start to drive, it vibrates bad like I have a flat tire or something and makes some noise. When i first get in the truck i can turn the wheel as far as it will go and turn with no noise or vibration. But if I drive on the highway for 20 minutes or longer it starts acting up when I make sharp turns(sharper than a 45 degree angle), and it gets worse the longer I drive.
I'm going to take it to my dad's shop and get it on the lift and try to check it out, but I figured I would see if anyone could give me some ideas on what to check. Maybe it is a common problem or something for awd. Thanks
Feb 5, 2010 | 11:45 AM
#2
I believe you are going to find out that your viscous coupling in your transfer-case is going bad. It is not allowing slip, in turn locking the front and rear axles together, making the truck act as if it were a true 4WD causing the typical crow hop feeling you are getting.
The viscous coupling is/was available for replacement, but your transfer-case will need to be torn down for replacement. Another option would to be find a suitable replacement, they do come up for sale from time to time. Lastly, there may be re-builders that handle NVG-149’s that you could get a fresh unit from.
The list of vehicles that the NVG-149 came in is reasonably extensive, so you have a decent shot at finding a replacement.
’01 GMC C3
‘01/’02 Yukon Denali
‘01/’02 Cadillac Escalade
’03 thru ’05-1/2 Silverado SS
’02 thru ’07-Classic Sierra Denali
The viscous coupling is/was available for replacement, but your transfer-case will need to be torn down for replacement. Another option would to be find a suitable replacement, they do come up for sale from time to time. Lastly, there may be re-builders that handle NVG-149’s that you could get a fresh unit from.
The list of vehicles that the NVG-149 came in is reasonably extensive, so you have a decent shot at finding a replacement.
’01 GMC C3
‘01/’02 Yukon Denali
‘01/’02 Cadillac Escalade
’03 thru ’05-1/2 Silverado SS
’02 thru ’07-Classic Sierra Denali
Feb 6, 2010 | 12:06 PM
#3
I believe you are going to find out that your viscous coupling in your transfer-case is going bad. It is not allowing slip, in turn locking the front and rear axles together, making the truck act as if it were a true 4WD causing the typical crow hop feeling you are getting.
The viscous coupling is/was available for replacement, but your transfer-case will need to be torn down for replacement. Another option would to be find a suitable replacement, they do come up for sale from time to time. Lastly, there may be re-builders that handle NVG-149’s that you could get a fresh unit from.
The list of vehicles that the NVG-149 came in is reasonably extensive, so you have a decent shot at finding a replacement.
’01 GMC C3
‘01/’02 Yukon Denali
‘01/’02 Cadillac Escalade
’03 thru ’05-1/2 Silverado SS
’02 thru ’07-Classic Sierra Denali
The viscous coupling is/was available for replacement, but your transfer-case will need to be torn down for replacement. Another option would to be find a suitable replacement, they do come up for sale from time to time. Lastly, there may be re-builders that handle NVG-149’s that you could get a fresh unit from.
The list of vehicles that the NVG-149 came in is reasonably extensive, so you have a decent shot at finding a replacement.
’01 GMC C3
‘01/’02 Yukon Denali
‘01/’02 Cadillac Escalade
’03 thru ’05-1/2 Silverado SS
’02 thru ’07-Classic Sierra Denali
Thread
Thread Starter
Forum
Replies
Last Post
Corvette454l88
Trucks and SUV Classifieds
19
Sep 1, 2016 01:24 AM
03regcab sierra
Dynamometer Results & Comparisons
20
Aug 3, 2015 12:11 AM
V-seriesTech
GM Engine & Exhaust Performance
7
Jul 28, 2015 12:31 PM
