Rumbling when cruising - The 1947 - Present Chevrolet & GMC Truck Message Board Network

serge · 02-28-2016, 08:24 AM

Hello,
My 70 c-20 is making a rumbling noise. At first it was occurring when going about 55+ mph and not that noticeable. Gradually getting worse. I can feel it in steering wheel. Would this be some kind of bearing?
Serge

**Grumpy old man** · 02-28-2016, 08:43 AM

I'd be changing those bearings , Can you feel it when turning or does it get worse ?

On the lighter side I usually try to get that Rumbling sound going down the road

serge · 02-29-2016, 09:49 AM

Quote:

Originally Posted by Grumpy old man

I'd be changing those bearings , Can you feel it when turning or does it get worse ?

On the lighter side I usually try to get that Rumbling sound going down the road

It seems slightly more noticeable when turning but not 100% sure. Hard to gauge when going 50+/- mph. It's a slight grumbling vibration you can feel in steering wheel, floor board and seat. It seems to occur on and off every second.
Any thoughts on carrier bearing. I had that replaced couple years ago with a 15$ one form Truck Shop catalog.
Good point on rumbling sound.

snipescastle2 · 02-29-2016, 12:32 PM

Yeah, I'd be pulling those hubs asap and check them bearings before they "Weld"them selves to your spindles, that's a monster you don't want, trust me.
New bearings/seals/re-pack with a good high temperature wheel bearing grease, better to do it all at the same time.
Ben

69moneypit · 02-29-2016, 12:50 PM

I had same problem . Checked rear end , drive shaft . Never could figure out problem , until front center cap fell off . Bearing was shredded .

serge · 03-01-2016, 10:18 AM

Okay! I guess it's time to learn about replacing and repacking wheel bearings.
Is this something a novice can attempt or should I go to a professional?
Thanks for your time.

**Grumpy old man** · 03-01-2016, 10:54 AM

Quote:

Originally Posted by serge

Okay! I guess it's time to learn about replacing and repacking wheel bearings.
Is this something a novice can attempt or should I go to a professional?
Thanks for your time.

it's easy use the search engine above for threads on replacing them or just Youtube it . use good grease and have plenty of rags repacking bearings by hand is fun !

serge · 03-01-2016, 05:23 PM

Quote:

Originally Posted by Grumpy old man

it's easy use the search engine above for threads on replacing them or just Youtube it . use good grease and have plenty of rags repacking bearings by hand is fun !

Okay. Thats what I will do.
Thanks.

02-28-2016, 08:24 AM	#1
serge Registered User Join Date: Oct 2012 Location: Geneva, Ohio Posts: 201	Rumbling when cruising Hello, My 70 c-20 is making a rumbling noise. At first it was occurring when going about 55+ mph and not that noticeable. Gradually getting worse. I can feel it in steering wheel. Would this be some kind of bearing? Serge __________________ General Contrucktor

02-28-2016, 08:43 AM	#2
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: Rumbling when cruising I'd be changing those bearings , Can you feel it when turning or does it get worse ? On the lighter side I usually try to get that Rumbling sound going down the road __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

02-29-2016, 12:32 PM	#4
snipescastle2 Registered User Join Date: Mar 2009 Location: WARRENSBURG,MISSOURI,64093 Posts: 1,518	Re: Rumbling when cruising Yeah, I'd be pulling those hubs asap and check them bearings before they "Weld"them selves to your spindles, that's a monster you don't want, trust me. New bearings/seals/re-pack with a good high temperature wheel bearing grease, better to do it all at the same time. Ben

02-29-2016, 12:50 PM	#5
69moneypit Divorced .....WITH KIDS Join Date: Dec 2003 Location: mississippi Posts: 619	Re: Rumbling when cruising I had same problem . Checked rear end , drive shaft . Never could figure out problem , until front center cap fell off . Bearing was shredded . __________________ 1969 GMC SWB 1975 Chevy Malibu 80k 1963 Ford Galaxie 63k (inherited) 2005 Nissan Armada (wife's idea)

03-01-2016, 10:18 AM	#6
serge Registered User Join Date: Oct 2012 Location: Geneva, Ohio Posts: 201	Re: Rumbling when cruising Okay! I guess it's time to learn about replacing and repacking wheel bearings. Is this something a novice can attempt or should I go to a professional? Thanks for your time. __________________ General Contrucktor

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