Go Back  Blazer Forum - Chevy Blazer Forums > General > General Chat
Reload this Page >

Grinding noise in drivetrain, no power to wheel while moving. Really loud, really sha

General Chat Chat about all things Blazer (and related vehicles). Off-topic stuff should be in the lounge, and all mechanical problems should be posted in the proper forum.

Grinding noise in drivetrain, no power to wheel while moving. Really loud, really sha

  #1  
Old 05-19-2019, 04:35 PM
Starting Member
Thread Starter
Join Date: May 2019
Location: KCMO
Posts: 3
Wabbo is on a distinguished road
Default Grinding noise in drivetrain, no power to wheel while moving. Really loud, really sha

I got this issue over the winter randomly driving home after work where id hit a pothole and there was a grinding noise and the car vibrated really bad. There was absolutely no power to the wheels even though i was still accelerating. Naturally i hit the break. The vibration stopped, I reaccelerated and everything was fine.

Ive tryed to identify the conditions when it happens and all i can gather is if i load the rear suspension very abruptly, like getting wheel hop or hit train tracks/ potholes (which obviously i avoid), it might happen might not. Ofcourse its one of those things you cant "make happen" when your trying to show someone.

Curious if anyone has had this issue? Any resolve? Its still very intermittent and can drive around confidently if Im careful. Needless to say, id like to fix it before i start damaging driveshaft splines, pr gears or what ever it is. Im confident doing my own work but dont have time/money to just poke and throw parts, its my daily driver.

Drive shaft / output splines look fine. No leaks at output shaft leading me to believe its deeper. Any help would be great. 2001 Blazer LT 4x4 w/auto 4wd.

I suppose i should mention this is after i put a rough country 2.5" suspension lift on it 6mo before. Any help would be great.

Thanks
 
  #2  
Old 05-19-2019, 05:52 PM
cleburne red's Avatar
BF Veteran
Join Date: Sep 2011
Location: Texas
Posts: 2,253
cleburne red will become famous soon enough
Default

Man that's a weird one, for sure. Maybe start by popping the rear diff over off and having a look-see
 
  #3  
Old 05-19-2019, 06:52 PM
Starting Member
Thread Starter
Join Date: May 2019
Location: KCMO
Posts: 3
Wabbo is on a distinguished road
Default

The vibration feels like its relatively right below when your driving. I was told the other day theres a retaininer (im envisioning a c clip?) in the tail piece? that stops the drive shaft from jumping from the "drive position" to the "neutral" position which is essentially what it feels like. I dont know if that makes any sense. Was trying to pick some brains here before i have a dissassembled drivetrain and scratching my head.
 
  #4  
Old 05-19-2019, 10:04 PM
cleburne red's Avatar
BF Veteran
Join Date: Sep 2011
Location: Texas
Posts: 2,253
cleburne red will become famous soon enough
Default

There's no clip that I know of on the driveshaft. The driveshaft will pull directly out of the rear of the tcase. It's splined, so there's no neutral position.

Now, there might be something weird going on in your tcase. I've completely rebuild mine before, but it's the np233, three button. I think the four button one like yours is way different
 
  #5  
Old 05-19-2019, 10:52 PM
Starting Member
Thread Starter
Join Date: May 2019
Location: KCMO
Posts: 3
Wabbo is on a distinguished road
Default

Yea, initially i pulled the driveshaft to check it out along with new u joints, just hoping maybe id get lucky but i figured if this retainer thing existed itd have to be deep or something.

Im gonna pull the tcase later in the week hopefully now that the cold and rain has stopped.
 
  #6  
Old 05-20-2019, 04:27 AM
cleburne red's Avatar
BF Veteran
Join Date: Sep 2011
Location: Texas
Posts: 2,253
cleburne red will become famous soon enough
Default

Good luck! It was a pain to drop mine. Thing is quite heavy! Just be careful, don't let it hit ya in the face!
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
chellebear187
2nd Gen S-series (1995-2005) Tech
1
10-15-2010 06:50 AM
Whsperz
2nd Gen S-series (1995-2005) Tech
6
09-29-2010 04:14 PM
pirkeltooned
1st Gen S-series (1983-1994) Tech
3
06-10-2010 11:11 PM
rudnik
2nd Gen S-series (1995-2005) Tech
2
02-04-2010 02:17 PM
Billy Jackets
2nd Gen S-series (1995-2005) Tech
6
12-22-2009 07:32 AM


Thread Tools
Search this Thread
Quick Reply: Grinding noise in drivetrain, no power to wheel while moving. Really loud, really sha


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 Amazon.com and affiliated sites.