jQuery not supported.



Oscillating grinding noise under truck

Oscillating grinding noise under truck

Postby robsZ71 [OP] » Dec 09 2010, 6:01am

I have a 1997 K1500 Z71, it has 92,000 on it. I have a grinding/rubbing noise that seems to be coming from the front passage side. The sound oscillates like a warped brake rotor. It does not do it all the time. If the truck is cold, it will start at approximately 25mph and will speed up with the increase in vehicle speed. After the truck has been driven for approximately 10-15 miles at highway speeds, when I get in town, it will do it when I hit bumps. I have changed the following parts on both sides in the front: axles(CV), brake rotors, calipers, brake pads, and hub assembly. It shifts in and out of 4HI, 4LO, and 2HI fine. Any help would be greatly appreciated.
Original Poster
robsZ71
Newbie
Newbie
Posts: 2
Topics: 1
Blogs: 0
Joined: Dec 09 2010, 5:31am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: washington
Year: 1997
Make/Model: Chevrolet Silverado
Extra Info: K 1500 Z-71
Group Membership:
Registered users
Related Topics  Grinding noise   Grinding noise when almost stopped   Loud grinding noise under acceleration. ..   1st gear grinding noise   GRinding Noise when Letting off the Accelerator   Intermittent Grinding Noise From front end?   4 wheel drive makes a grinding noise 2013 Silverado   03 1500 silverado...Grinding noise when i turn wheel left..   Annoying clicking noise under the truck while driving   Transmission noise when I initially put truck in drive   Grinding A/C   Stange grinding?   Grinding on acceleration   Transmission Grinding 
Transmission/Drivetrain Sponsor
Advertise Here

Re: help

Postby rkj4243 » Dec 10 2010, 12:03am

Only rotating part that you haven't checked or changed is the right hhand output shaft of the front axle assembly. there is a bearing in the end of the tube that the shaft journal rides on, and it may be worn, or the shaft journal itself. best way to check is to unbolt halfshaft flange from the output shaft flange, and then try to move output shaft up and down. Should have very little movement in shaft. If that is the problem, can be repaired by replacing bearing and seal on the tube.
rkj4243
Automotive Technician
Automotive Technician
Firing on 4 cylinders [L1]
Firing on 4 cylinders [L1]
Posts: 43
Topics: 2
Images: 6
Blogs: 0
Joined: Oct 21 2010, 11:33pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Michigan
Year: 2010
Make/Model: GMC Sierra
Extra Info: 1500 SL 4X4
Group Membership:
Automotive Technicians
Registered users

Re: Oscillating grinding noise under truck

Postby robsZ71 [OP] » Dec 10 2010, 3:08am

I'm going to check it this weekend. I appreciate the info. Is it a fairly simple project and do you know of any links or sites that would show an exploded view of it?
Original Poster
robsZ71
Newbie
Newbie
Posts: 2
Topics: 1
Blogs: 0
Joined: Dec 09 2010, 5:31am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: washington
Year: 1997
Make/Model: Chevrolet Silverado
Extra Info: K 1500 Z-71
Group Membership:
Registered users

Re: Oscillating grinding noise under truck

Postby thirdgen » Dec 10 2010, 7:16am

I had that part go bad on my 2000 silverado. It was the drivers side though. When I went around a hard turn and there was a lot of load on the drivers side, it was quiet. When I went around a turn the other way, and it unloaded the drivers side, it would make a grinding noise. I jacked the front end up and could actually wiggle the wheel / tire, but it wasn't the tie rods or ball joints that were moving. It was the bearing that the end of the CV axel goes through before it passes through the hub. Easy fix.
thirdgen
Combustion on 1 piston [L2]
Combustion on 1 piston [L2]
Posts: 129
Topics: 23
Images: 0
Blogs: 0
Joined: Jul 05 2010, 9:56pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Schuylkill County
Year: 2000
Make/Model: Chevrolet Silverado
Extra Info: 4.8 vortec
Group Membership:
Registered users

Re: Oscillating grinding noise under truck

Postby mooseye » Jan 13 2011, 12:13am

I have the same problem on my '99 on the drivers side but it is not the hub bearing it is the differential end of the axle. I believe that is what the OP was describing on the passenger side.
I think, and I hope I am wrong, that you must disassemble the differential to service the bearing.
Some one please tell me I am wrong!
mooseye
Newbie
Newbie
Posts: 1
Blogs: 0
Joined: Jan 12 2011, 11:44pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: tn
Year: 1999
Make/Model: Chevrolet Silverado
Extra Info: new model 4x4 4.8l
Group Membership:
Registered users

Re: Oscillating grinding noise under truck

Postby dotsoid » Feb 01 2011, 6:24pm

I also have this oscillating grinding noise under truck. It only occurs for me when in auto or 4hi and 4lo.
I put it on the stand and sounds like it is coming from Transfer Case. I replaced the fluid with the GM "liquid gold" (due to price $13.00 a quart!) Auto-Trak II T Case fluid and no change in noise. Noise eventually goes away when placed back in 2WD. Anyone else have this issue? Would sure like to know what it is and if it is a part that can be replaced or a new transfer case is in my immediate future?
dotsoid
Newbie
Newbie
Posts: 1
Blogs: 0
Joined: Nov 02 2010, 8:27pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: OHIO
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: 4x4 ext. cab
Group Membership:
Registered users

Re: Oscillating grinding noise under truck

Postby lars » Feb 11 2011, 3:28am

I have a noise that is more of a knock that sounds like it's coming from the front left wheel area. When reversing it is more prominent, sort of knock knock knock as the wheel rotates. Doesn't seem so bad in forward but there is a rattle there when you go over bumps. Does this sound like the drive shaft too? Does the shaft turn when not in 4wd?
lars
Firing on 1 cylinder [L1]
Firing on 1 cylinder [L1]
Posts: 11
Images: 1
Blogs: 0
Joined: Nov 03 2010, 6:26am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: australia
Year: 2001
Make/Model: GMC Sierra
Extra Info: 1500 z71 4x4 5.3l
Group Membership:
Registered users

Re: Oscillating grinding noise under truck

Postby WingNut » Feb 11 2011, 3:53am

Time to play "stump the chumps!"

If this is doing this right after you hit a bump (and you changed most everything else that spins at wheel speed) perhaps you have a sticky shock tube. The suspension compresses on the bump, but doesn't return all the way and your tire may be rubbing.

Tell me, does the grinding go away after a short period of time?
Marine because.

15851617
59804119
Image
User avatar
WingNut
Armed Forces
Armed Forces
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 2255
Topics: 53
Images: 68
Blogs: 15
Joined: Jan 28 2011, 10:02am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Charlottesville, VA
Year: 2004
Make/Model: GMC Sierra
Extra Info: 1500 5.3L 2WD
Group Membership:
How-to Authors
Registered users
Servicemen

Re: Oscillating grinding noise under truck

Postby lars » Feb 11 2011, 6:20am

like I said, it seems to be always there in reverse, almost sounds like something not meshing type of clunk clunk clunk, or even a drive shaft end flopping around as it spins.then when you go forward it sounds ok until you hit a bump but I can't be sure it is coming from exactly the same area. I will have to have a bit more of a look under the car I think. It's just that it's been raining so much here in Queensland Australia that trying to find a dry bit of lawn has been difficult.
lars
Firing on 1 cylinder [L1]
Firing on 1 cylinder [L1]
Posts: 11
Images: 1
Blogs: 0
Joined: Nov 03 2010, 6:26am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: australia
Year: 2001
Make/Model: GMC Sierra
Extra Info: 1500 z71 4x4 5.3l
Group Membership:
Registered users

Re: Oscillating grinding noise under truck

Postby WingNut » Feb 11 2011, 6:49am

Perhaps it's a loose tail pipe that occaisionally shifts position and rubs the drive shaft. Also check the shafts and u-joints for looseness. See if you can get a friend to run out along side to zero in on the noise.
Marine because.

15851617
59804119
Image
User avatar
WingNut
Armed Forces
Armed Forces
Shifting into Sixth Gear! [L3]
Shifting into Sixth Gear! [L3]
Posts: 2255
Topics: 53
Images: 68
Blogs: 15
Joined: Jan 28 2011, 10:02am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Charlottesville, VA
Year: 2004
Make/Model: GMC Sierra
Extra Info: 1500 5.3L 2WD
Group Membership:
How-to Authors
Registered users
Servicemen
Next

Return to Transmission/Drivetrain

 

  • Similar topics
    Replies
    Views
    Last post

Common search terms

front wheel check oscillating problem right same noise grinding help truck think side miles back anyone make

It is currently Apr 23 2014, 8:32pm

Login  •  Register
SHOP TALK (Live Chat)
Transmission/Drivetrain Forum
Transmission/DrivetrainTransmission and drivetrain related components. Discuss automatic and manual trans repairs and performance or talk about driveshafts or rear-ends and differentials. Diagnostics of 4-speed, 5-speed, or even 6-speed transmissions.
To create a new topic in Transmission/Drivetrain, click this button:
Previous topic Next topic

Network Link:
Chevy Silverado Parts

Random Image Attachments
Weathertech Side Window ...
Weathertech Side Window ...
Attached by: martinjstn
How's About a "Joke...
How's About a "Joke...
Attached by: Mudduck
How's About a "Joke...
How's About a "Joke...
Attached by: Mudduck
How's About a "Joke...
How's About a "Joke...
Attached by: Mudduck
Sitewide News Sitemaps & Feeds

Who is online

Users browsing this forum: No registered users and 12 guests