When driving VERY slow at 20MPH and under I'm hearing a horrid squeaky noise coming from under my H3. I got out while it was rolling very slow, looked underneath the truck and it looks like its coming from the driveshaft area that goes to the rear. I can tell by the sound, it's something that is rotating. Anyone ever have this problem before?

I have a 08 Hummer H3 with 65,000 miles on it.

 

I did some google searches and it sounds like I'm having this problem-
#11-08-61-001A: Underbody Squeak/Creak/Crunch Noise

I have a bit of concern that it's my problem because my squeak only comes when I press on the gas pedal at a very slow speed.

 

I have the same problem. turned out to be my leaf spring bushings. drench them in some lub and that should stop it for a while.

 

If it were the bushings wouldn't I hear it while foot off the gas. I only hear it when I'm accelerating down the road, that's what made me believe it was the drive shaft.

 

thats true. it maybe a u joint ...i had to replace both in my 06 about 2 summers ago. they were almost seized up. If its your ujoints then its a cheap fix. their only like $20 a piece i think.

 

yep,probably dried out u joint bearings. I had it on a van years back.
before it got noisy it started wearing thru the yoke metal and took a lot more work than just u joint so catch it quik!

 

Whats the best u joint to get for h3's. I've read that getting them without the grease nipple is best. Any brand you guys prefer?

 

i just got ones at auto zone. I perfer to get grease zircs on any after market part i can. i did with my new swaybar end links. i think its better. these 'sealed" units seem to wear out quicker. thats just my oppinion.

 

I have something that sounds similar...

Do you hear it when going straight or at a turn? Mine is only with about 1/2 turn of the wheel. More or less than that and it goes away.

Not the wheel bearing hub assemblies. Did them. U joints are all replaces too. Doesn't seem to be the half shafts either. It's quite annoying...

 

Mine was when i was going straight or pulling into my driveway. Weird thing is, I haven't had the noise since posting the thread.