The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-31-2019, 01:53 PM   #1
Wisco86
Registered User
 
Join Date: Mar 2019
Location: Minneapolis MN
Posts: 4
Front End Noise

Hi guys,

I have a super loud rattle/clanging from the front end of my 83 C30 when I hit bumps. I have eliminated the shocks and sway bar as culprits. All 4 ball joints have a little play, I found the worst one and replaced it with no change in the noise. I also found that if I apply the brakes while going over bumps, it will decrease the noise and even eliminate it if I brake hard enough. I checked the control arm bushings and they seem tight (and also look like a PITA to change.) Doesn't seem to be motor or trans mounts. I'm pulling my hair out over this. Any ideas?
Wisco86 is offline   Reply With Quote
Old 05-31-2019, 03:46 PM   #2
Bandit130
Registered User
 
Bandit130's Avatar
 
Join Date: Dec 2014
Location: Euless, Texas
Posts: 376
Re: Front End Noise

Welcome
__________________
1974 Cheyenne 10 LWB 350/TH350/AC/4 BBL Quadrajet.
Bandit130 is offline   Reply With Quote
Old 05-31-2019, 03:57 PM   #3
demian5
Registered User
 
demian5's Avatar
 
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 1,957
Re: Front End Noise

Grease anything and everything on the front end that has a zerk fitting and try again.

Maybe your core support bolts are lose and the braking forces the front end down?
__________________
"Work hard, use your vacation days."
1970 C15 GMC Long Bed
1964 Impala SS
1959 Austin Healey 100-6 BN6
1979 Glastron Carlson CVX 16 SS
Instagram: C10sofOC
demian5 is offline   Reply With Quote
Old 05-31-2019, 07:24 PM   #4
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 1,782
Re: Front End Noise

How's the wheel bearings?
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
cadillac_al is offline   Reply With Quote
Old 05-31-2019, 08:27 PM   #5
Wisco86
Registered User
 
Join Date: Mar 2019
Location: Minneapolis MN
Posts: 4
Re: Front End Noise

Wheel bearings seem fine when doing a shake test. Can't hear any howling at road speeds, but the exhaust may be drowning any bearing noise.
Wisco86 is offline   Reply With Quote
Old 05-31-2019, 09:08 PM   #6
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 1,267
Re: Front End Noise

Get a 1lb rubber mallet and whack the crap out of the frame and bumper. Might just find the loose nut, wiring harness, or other thing that is doing the rattling.
Dead Parrot is offline   Reply With Quote
Old 05-31-2019, 09:09 PM   #7
mongocanfly
Senior Member
 
Join Date: May 2015
Location: Alabama
Posts: 8,840
Re: Front End Noise

Welcome...
Crawl under the truck while you have someone bouncing the front and see if you can isolate where its coming from....can you tell if its left or right side?
I would immediately suspect away bar or shocks...you could disconnect one thing at a time and see if it clears up..
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 05-31-2019, 09:40 PM   #8
Wisco86
Registered User
 
Join Date: Mar 2019
Location: Minneapolis MN
Posts: 4
Re: Front End Noise

I've chased a bunch of minor loose parts like the fan shroud and tightened them up. The sway bar and both shocks are currently out of the truck so it's definitely not that. My main suspect was the control arm bushings, but why would the rattling stop when I apply brakes? Is it possible that the caliper is loose? The brakes are firm, no sticking, and no pulsing like if there was a stuck pad or warped rotor.
Wisco86 is offline   Reply With Quote
Old 05-31-2019, 10:22 PM   #9
Rooster73
Registered User
 
Join Date: Mar 2019
Location: Pearcy AR.
Posts: 48
Re: Front End Noise

I had a similar issue, the outboard brake pads were rattling, the 2 ears were not bent down, should be bent as to take a large pair of pliers to squeeze them to the caliper and hold. The calipers still float. When changing pads just barely tap with a hammer and it fall right off.
Rooster73 is offline   Reply With Quote
Old 06-01-2019, 12:30 AM   #10
Big Moose
Registered User
 
Join Date: Dec 2018
Location: Alberta
Posts: 52
Re: Front End Noise

Most likely your spring clip for the caliper is broken, had this happen a couple of times and it only rattles when your driving over bumps. Also installing the anti rattle clips on the brake pads helps as well.
Big Moose is offline   Reply With Quote
Old 06-01-2019, 06:50 AM   #11
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 1,782
Re: Front End Noise

Yup, gotta be something with the brakes if applying brakes makes the sound change.
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
cadillac_al is offline   Reply With Quote
Old 06-01-2019, 08:36 AM   #12
Redneck Rydes
Registered User
 
Redneck Rydes's Avatar
 
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 354
Re: Front End Noise

X2 on the brakes,loose calipers,or rattling pads.
Redneck Rydes is offline   Reply With Quote
Old 06-01-2019, 11:02 AM   #13
Wisco86
Registered User
 
Join Date: Mar 2019
Location: Minneapolis MN
Posts: 4
Re: Front End Noise

Rooster, how loud was your rattle? Mine sounds like there's not a single bushing left under the truck. I never imagined that a brake component could be so loud. I'll pull the wheels off this weekend and take a look.
__________________
1983 Chevy C30 - SM465/4.10/350

2010 CVPI
2018 Forester
1986 Yota 4x4
Wisco86 is offline   Reply With Quote
Old 06-01-2019, 08:39 PM   #14
Rooster73
Registered User
 
Join Date: Mar 2019
Location: Pearcy AR.
Posts: 48
Re: Front End Noise

Not to loud, just a quick rattle since the pad doesn't have a lot of area.could still be a suspension piece though, if there is slack from something then applying the brakes will pressure it back, sore to speak
Rooster73 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -4. The time now is 12:34 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com