Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
|
Show Printable Version | Email this Page | Subscribe to this Thread |
|
Thread Tools |
01-16-2011, 01:00 PM | #1 | |
AF Newbie
Join Date: Feb 2010
Location: Augusta, Kentucky
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
|
Buzzing noise from rear of '05 tahoe
When we start our 2005 Tahoe, after the engine turns over and we are just sitting there, there has always been a buzzing sound (sounding kind of like a hammer drill) coming from the rear of the vehicle that last for about 2-4 seconds, and then it stops. Recently, the same noise noise has been occurring during normal driving. Last night it occurred several times while driving a short distance. It came on and stayed on for several minutes before stopping. I am fairly certain the noise is being generated by a small black cylinder located behind the drivers side rear wheel. I could feel it buzzing when the noise occurred, but I don't know what that part is and can't find it in any of my manuals. No codes are being registered on the computer and there is no drivability issue here, just the noise. Can someone help me diagnose this and possibly prevent a future problem? Thanks!
Silvio |
|
01-16-2011, 01:22 PM | #2 | |
AF Enthusiast
Join Date: Jul 2005
Location: troy, Ohio
Posts: 2,311
Thanks: 2
Thanked 171 Times in 169 Posts
|
Re: Buzzing noise from rear of '05 tahoe
From here, it sounds like your air compressor pump that controls the air pressure in your air ride control system. Yes they can be noisy, and can run more often if you have an air leak. Just knowing what it is will probaby satisfy your question. It probably cycles on after each ignition cycle, depending on ride height and/or if you have a small leak.
See if it makes the noise the next time you load a couple hundred pounds in the rear.
__________________
Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles- |
|
01-17-2011, 08:21 AM | #3 | |
AF Newbie
Thread starter
Join Date: Feb 2010
Location: Augusta, Kentucky
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Buzzing noise from rear of '05 tahoe
I appreciate the post. Yep, I now think it is exactly that-the auto ride air pump-cycling on and off. In fact, the other day when it went on several times while driving, we had a couple hundred pounds of grain in the back (we usually don't haul anything with this car) and it was pretty cold outside. So, sounds like it is a normal sound. If there is a leak somewhere in that system, where would I look, or how would I troubleshoot the leak? Does the air hose that comes off the pump supply the shocks with air? Thanks.
|
|
01-17-2011, 09:08 AM | #4 | ||
AF Fanatic
Join Date: Oct 2007
Location: EVERETT, Massachusetts
Posts: 10,898
Thanks: 8
Thanked 432 Times in 431 Posts
|
Re: Buzzing noise from rear of '05 tahoe
Quote:
use a spray bottle with dish soap/water mix spray the fittings/shocks look for bubbles.. I would make this decision quickly with your correcting this as this air pump is not designed to work all that much. installing non OEM air ride system, is possible..this would be less costly. |
||
01-17-2011, 03:50 PM | #5 | ||
AF Regular
Join Date: Jan 2011
Location: Sticks, Louisiana
Posts: 128
Thanks: 0
Thanked 11 Times in 11 Posts
|
Re: Buzzing noise from rear of '05 tahoe
Quote:
I know a guy who had a Cadillac Deville with the air ride, he removed all of it and put coil over struts and shocks. He said it didn't ride like it used to it but it was a cheaper alternative to $700 OEM parts per side (Front/Back) |
||
|
POST REPLY TO THIS THREAD |
Tags |
2005 , buzz , tahoe |
|
|