GMC people i need drive shaft help!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ol yellow 72 · 07-29-2007, 09:57 AM

i got a 72 GMC and ive had couriour bearing issues. so when i dropped the drive shaft the center bearing support ( the bracket where the couriour bearing bolts to) is broken, its been welded in the past. so i go to the local salvage yard to get the piece and out of the 12 67-72 there is no GMCs so i looked the chevys over and seen its different the chevy has a strait 2 bolt bearing and my GMCs is horse shoe shaped, so if i can find one for a GMC, then imm gonna have to get a chevy one and weld it in, so will i have to change the drive shaft too?
please help i wanna drive my baby again.

krue · 07-29-2007, 10:14 AM

I honestly don't thing there's a difference between the chevy and the gmc. Post a pic of what your bearing looks like and I'll tell you if it's the same as mine (my truck is a gmc).

ol yellow 72 · 07-29-2007, 10:34 AM

i personally know theres a difference in the support bearings, i work for oreillys and there are 2 different ones, the chevy ones look like a tin circle with a stem, and the gmc ones look like a horseshoe

Richard H. · 07-29-2007, 10:42 AM

Not much help here but; the carquest book say's the one for my 71 C 10 has the side to side bolt pattern (horse shoe) NOT. Mine requires the inline bolt pattern which I finally found at GMC Paul's.

cdowns · 07-29-2007, 10:43 AM

instead of using a junkyard piece why dont you go and get a new one chances are it'll live alot longer

90\87Formula · 07-29-2007, 10:47 AM

Quote:

Originally Posted by cdowns

instead of using a junkyard piece why dont you go and get a new one chances are it'll live alot longer

I think he was talking out getting the frame bracket, which is riveted on; at a junkyard. He said it was broken.

Does the bracket look like the one in the pic I posted?

ol yellow 72 · 07-29-2007, 10:59 AM

that looks like it, it rivets to the frame, and that is the couriour i have so im sure thats what the bracket looks like, mine is in 3 pieces. any clue y mines so odd?

ol yellow 72 · 07-29-2007, 11:13 AM

GMC bearing is federal mougal shown here
chevy is the other

90\87Formula · 07-29-2007, 11:19 AM

Just for reference, here's the other frame bracket. This is the only one I have seen on the pickups I have owned. 68 and 69 Chevy and 72 GMC.

ol yellow 72 · 07-29-2007, 11:23 AM

thats what was on all the junk yard trucks, BTW its a 1/2 ton 1500 gMC

Goose · 07-29-2007, 11:36 AM

I removed this bracket competely and replaced it with a one piece drive shaft. I've had no problems, but my '72 GMC is a short step. May not be as convenient for your version.

ol yellow 72 · 07-29-2007, 11:38 AM

i dont know if i can find a one piece to fit or not its a LWB

krue · 07-29-2007, 11:39 AM

My GMC has the Chevy one, are you sure it's a GMC/Chevy thing and not a leaf spring/coil spring thing? My GMC has coil springs.

ol yellow 72 · 07-29-2007, 11:43 AM

could be my GMC has leaf

ol yellow 72 · 07-29-2007, 03:48 PM

ttt

72GMCburban · 11-06-2007, 08:17 AM

How do you take off the bearing? Mine is shot and I don't see how the shaft comes out?

**Palf70Step** · 11-06-2007, 09:10 AM

Mine came off on it's own. Which is not a good thing By the way.

My 70 is a one-piece shaft, so I don't have to mess with it.

07-29-2007, 09:57 AM	#1
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	GMC people i need drive shaft help!!! i got a 72 GMC and ive had couriour bearing issues. so when i dropped the drive shaft the center bearing support ( the bracket where the couriour bearing bolts to) is broken, its been welded in the past. so i go to the local salvage yard to get the piece and out of the 12 67-72 there is no GMCs so i looked the chevys over and seen its different the chevy has a strait 2 bolt bearing and my GMCs is horse shoe shaped, so if i can find one for a GMC, then imm gonna have to get a chevy one and weld it in, so will i have to change the drive shaft too? please help i wanna drive my baby again.

07-29-2007, 10:14 AM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: GMC people i need drive shaft help!!! I honestly don't thing there's a difference between the chevy and the gmc. Post a pic of what your bearing looks like and I'll tell you if it's the same as mine (my truck is a gmc). __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

07-29-2007, 10:34 AM	#3
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	Re: GMC people i need drive shaft help!!! i personally know theres a difference in the support bearings, i work for oreillys and there are 2 different ones, the chevy ones look like a tin circle with a stem, and the gmc ones look like a horseshoe

07-29-2007, 10:42 AM	#4
Richard H. Spanked once Join Date: Oct 2006 Location: Intheshop, Indiana Posts: 969	Re: GMC people i need drive shaft help!!! Not much help here but; the carquest book say's the one for my 71 C 10 has the side to side bolt pattern (horse shoe) NOT. Mine requires the inline bolt pattern which I finally found at GMC Paul's.

07-29-2007, 10:43 AM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: GMC people i need drive shaft help!!! instead of using a junkyard piece why dont you go and get a new one chances are it'll live alot longer __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-29-2007, 10:59 AM	#7
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	Re: GMC people i need drive shaft help!!! that looks like it, it rivets to the frame, and that is the couriour i have so im sure thats what the bracket looks like, mine is in 3 pieces. any clue y mines so odd?

07-29-2007, 11:13 AM	#8
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	Re: GMC people i need drive shaft help!!! GMC bearing is federal mougal shown here chevy is the other Attached Images

07-29-2007, 11:19 AM	#9
90\87Formula Registered User $90\87Formula's Avatar$ Join Date: Oct 2000 Location: Abilene Texas Posts: 1,756	Re: GMC people i need drive shaft help!!! Just for reference, here's the other frame bracket. This is the only one I have seen on the pickups I have owned. 68 and 69 Chevy and 72 GMC. Attached Images __________________ Robert Member 1532 Last edited by 90\87Formula; 07-29-2007 at 11:25 AM.
$90\87Formula is offline$

07-29-2007, 11:23 AM	#10
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	Re: GMC people i need drive shaft help!!! thats what was on all the junk yard trucks, BTW its a 1/2 ton 1500 gMC

07-29-2007, 11:36 AM	#11
Goose Goose Join Date: Jun 2000 Location: Austin Posts: 142	Re: GMC people i need drive shaft help!!! I removed this bracket competely and replaced it with a one piece drive shaft. I've had no problems, but my '72 GMC is a short step. May not be as convenient for your version. __________________ '72 GMC short-step 350/350

07-29-2007, 11:38 AM	#12
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	Re: GMC people i need drive shaft help!!! i dont know if i can find a one piece to fit or not its a LWB

07-29-2007, 11:39 AM	#13
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: GMC people i need drive shaft help!!! My GMC has the Chevy one, are you sure it's a GMC/Chevy thing and not a leaf spring/coil spring thing? My GMC has coil springs. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

07-29-2007, 11:43 AM	#14
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	Re: GMC people i need drive shaft help!!! could be my GMC has leaf

07-29-2007, 03:48 PM	#15
ol yellow 72 Registered User Join Date: Aug 2005 Location: kentucky Posts: 211	Re: GMC people i need drive shaft help!!! ttt

11-06-2007, 08:17 AM	#16
72GMCburban Registered User Join Date: Oct 2006 Location: Fort Worth Posts: 306	Re: GMC people i need drive shaft help!!! How do you take off the bearing? Mine is shot and I don't see how the shaft comes out? __________________ --Mike http://rides.webshots.com/album/551997543JkYiXF



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11-06-2007, 09:10 AM	#17
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,083	Re: GMC people i need drive shaft help!!! Mine came off on it's own. Which is not a good thing By the way. My 70 is a one-piece shaft, so I don't have to mess with it. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

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