Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

H3 "pop" felt in front floor area when turning

Old 09-13-2008, 08:29 PM
joewcob3's Avatar
Senior Member
Thread Starter
Join Date: Mar 2008
Posts: 125
Default H3 "pop" felt in front floor area when turning

I think I finally fixed my front end "pop" that was felt under my feet in my 2008 H3. When turning a corner, fast or slow, I would get a pop under the dead pedal area or under the gas pedal. I had initially put some teflon paper-thin washers between the frame and the lower body mount (the 2 mounts under the Instrument Panel and the 2 mounts just behind the front seats). I was told by a trusted source that it was a "stick-slip" condition between the mount and the frame surface and that this would allow the mount cushion to slip, but not stick...and therefore not pop.

This didn't work, so I tried the opposite. I mostly felt the "pop" under the dead pedal, so I cut a piece of "non-skid rubber waffle material" (the kind of material that you put in a drawer to keep stuff from sliding around) in a disk shape that was about 1/4 inch bigger diameter than the contact surface of the lower body mount. I also cut a shape in the middle that made it fit snug to the upper mount (a hole with a flat top and bottom to match the upper mount shape). I thought that this material would rip to pieces, but after 3 weeks it's still fine. I removed all of the teflon washers that I added and cleaned the contact surfaces of the 4 body mounts with rubbing alcohol to make sure that they were clean. Also cleaned the contact surface on the frame with alcohol too. I torqued the mounts to 81 ft/lbs (per engineering contact) and went for a drive.

Improvement has been 1 million percent over the last 3 weeks....

I had one pop 8 days ago and decided to spray the upper halves of the body mounts (just the upper halves....not the lowers) with a generous amount of silicone spray. Now, I did try the silicone spray a month ago, before all the alcohol and rubber waffle washer, but it didn't help much. Maybe a combination of the silicone spray on the uppers and the lowers getting more bite (by being clean and the driver's side front having the new rubber washer) is what worked...not sure. All I know is that in 3 weeks I have had 1 "pop" (the one from 8 days ago)....and in the last 8 days I have had NONE (watch me have a bunch now that I have posted this).

If anyone else has this annoying popping sound, maybe this will help.
Old 09-14-2008, 09:00 PM
Senior Member
Join Date: May 2008
Posts: 158
Default RE: H3 "pop" felt in front floor area when turning

keep us updated
Related Topics
Thread Starter
Last Post
Hummer H2
12-10-2018 04:48 PM
Hummer H3
08-13-2012 09:25 PM
General Hummer Talk
02-03-2012 01:45 PM
Hummer H3
11-14-2009 10:58 PM
Hummer H3
09-10-2008 10:03 PM

Thread Tools
Search this Thread
Quick Reply: H3 "pop" felt in front floor area when turning

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.