Go Back   Blazer Forum - Chevy Blazer Forums > Mechanical & Maintenance > Steering, Suspension & Drivetrain
Sign in using an external account
Register Forgot Password?
Search


Welcome to Blazer Forum!
Welcome to Blazer Forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Blazer Forum today!


Closed Thread
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 06-01-2009, 08:53 AM
 
Join Date: Dec 2008
Posts: 4
a4.34me is an unknown quantity at this point
Default drivetrain roaring noise

My daughter has a 94 S10 4.3w AT 4WD ,after driving 5-6 miles at highway speed starts a roaring noise in drivetrain sounds like 4WD is engaged noise goes away if I slow down and is not as bad if driving up hill or under a load .It has electronic shifted 4WD .
thanks
  #2  
Old 06-04-2009, 11:08 AM
New Member
 
Join Date: Mar 2009
Posts: 74
jstutzman is on a distinguished road
Default

If you even figure this out, please post your findings. My suburban is doing something very similar. I cannot figure out what it is. Mine is like a low pitched howling kinda. if im crusing like interstae driving it drives me nuts. Around town or up hills ect, i dont even hear it. I have had some possible causes being bad U joints, Worn diffs, Worn trannys, Wheel bearings, even back wheel bearings, and CV joints. Darned if i can figure out what it is.
  #3  
Old 06-05-2009, 01:23 PM
 
Join Date: Dec 2008
Posts: 4
a4.34me is an unknown quantity at this point
Default

Mine sounds like a truck with "Monster" size tires roaring and it comes and goes with different speed/road conditions .I've had a busy week ,haven't had a chance to even drive the thing but I plan on getting under it in a couple days and see what I can come up with .Thanks for the interest .
  #4  
Old 06-05-2009, 05:53 PM
Junior Member
2006 Chevrolet TrailBlazer
 
Join Date: Mar 2008
Location: Raleigh, North Carolina
Posts: 418
cr8390 is an unknown quantity at this point
Default

granted u have a 94 but my 99 did this and it was a bad hub bearing just letting u no
__________________

GM All the way!! Current GM's: Mine: 2006 Trailblazer 4X4 LS Totaled: 2003 Chevy Trailblazer LT 4X4, 2009 Chevy HHR (rent-a-car) 1999 Blazer, Dad: 2006 Silverado 4x4, 2007 Chevy Avalanche 4x4, Mom: 2008 Cadillac STS4 Loaded, Brother: 2005 Cadillac CTS Loaded
Old Blazer: http://www.cardomain.com/ride/3095445
Old Blazer Videos: http://www.youtube.com/cr8390
  #5  
Old 07-05-2009, 10:20 AM
 
Join Date: Dec 2008
Posts: 4
a4.34me is an unknown quantity at this point
Default

Finally got around to working on the thing again ,figured out it makes the noise when coasting/decelerating so I thought maybe an engine vacuum is having an effect on 4WD vacuum controls .I disconnect the vacuum to front axle servo and it hasn't made the noise since ,I guess the increase in engine vacuum when coasting or decelerating was trying to engage front axle somehow now I just gotta figure if it's the transfer case switch or the servo .I hope this helps someone else .
  #6  
Old 07-05-2009, 04:22 PM
swartlkk's Avatar
Administrator
2009 GMC Yukon Denali
My Garage
 
Join Date: May 2005
Location: Waterloo, NY
Posts: 36,884
swartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond repute
Send a message via ICQ to swartlkk Send a message via AIM to swartlkk
Default

Sounds like a faulty transfer case switch. Glad you got it figured out!
Old 07-05-2009, 04:22 PM
 
 
 
Closed Thread

Tags
2008, blazer, case, chevy, drive, engages, front, motor, noise, roar, roaring, sound, sounds, suburban, surburban, tire, transfer, wheel


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors

All times are GMT -5. The time now is 06:27 PM.

Internet Brands, Inc.



SEO by vBSEO ©2010, Crawlability, Inc.