OK, I have a strange noise coming from somewhere on my truck. I did a search and have found lots of info...too much. I was wondering if people could help me narrow it down before I go to the dealer tomorrow.
I think it may be the driver's side front wheel hub, but read where someone else thought the same thing and it turned out to be the rear differential. So here is a description of the noise:
the noise is a whirring, grinding noise. it's definitely rotational. the noise is not present when the truck is running but parked. I don't think the noise is present while driving in reverse, it's definitely not noticeable, but that may be because the speed is so slow.
The noise is noticeable while moving forward and is especially noticeable when I go over a bump or turn right (even a very slight right hand turn-like to follow a curve in the road). The noise is not noticeable when turning left.
This is why I suspect the driver's side wheel hub. Not even 3 weeks ago, my girlfriend's Mustang GT had the same problem. It was a horrible grinding noise while driving and turning right. When she turned left the noise would stop. I popped the wheel and brakes off, spun the hub and it squeaked. Replaced the bearing and the problem was solved.
I do have the GM certified 100K mile warranty so I will still have the dealer check it out, but wanted some other input. Any other thoughts?
also, twice this winter, the "service 4WD" message came on in my truck. Both times it went away after parking and restarting hours later (I was driving to work and the message came on, then when I left work at the end of the day, the message was gone). After the 2nd time I called the dealer but the message wasn't there anymore so they said to bring it down the next time it did this, but it hasn't happened since.
I think it may be the driver's side front wheel hub, but read where someone else thought the same thing and it turned out to be the rear differential. So here is a description of the noise:
the noise is a whirring, grinding noise. it's definitely rotational. the noise is not present when the truck is running but parked. I don't think the noise is present while driving in reverse, it's definitely not noticeable, but that may be because the speed is so slow.
The noise is noticeable while moving forward and is especially noticeable when I go over a bump or turn right (even a very slight right hand turn-like to follow a curve in the road). The noise is not noticeable when turning left.
This is why I suspect the driver's side wheel hub. Not even 3 weeks ago, my girlfriend's Mustang GT had the same problem. It was a horrible grinding noise while driving and turning right. When she turned left the noise would stop. I popped the wheel and brakes off, spun the hub and it squeaked. Replaced the bearing and the problem was solved.
I do have the GM certified 100K mile warranty so I will still have the dealer check it out, but wanted some other input. Any other thoughts?
also, twice this winter, the "service 4WD" message came on in my truck. Both times it went away after parking and restarting hours later (I was driving to work and the message came on, then when I left work at the end of the day, the message was gone). After the 2nd time I called the dealer but the message wasn't there anymore so they said to bring it down the next time it did this, but it hasn't happened since.