Rebuilding the automatic shift column... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**COBALT** · 02-04-2005, 01:25 PM

During my failed brakes experiment a couple of weeks ago my shifter on the column has gotten completely goofed up. I think I've taken this thing apart three times, and every time I think I have it together like it's supposed to only to have problems with it later.

This time it's so goofed up I can barely shift, and that's only if I have my foot on the dash and I'm using my body's leverage to make it shift. Kinda hard to do.

Anyway, does anyone have a good drawn-out idea how this shifter is SUPPOSED to go together??? Forget LMC's picture of the column in their catalog. That's what's gotten me in trouble in the first place. I need to know what parts go where and in what order. I don't want to have to take this thing apart again because it's not correct. I'll order whatever parts I need.

68jimmy · 02-04-2005, 04:47 PM

Do you have a factory shop manual? When I rebuillt mine that's what I used as a reference... If not I could try and scan the pages in and send them to you.

good luck

**COBALT** · 02-04-2005, 07:25 PM

I have one but I think I lost it a long time ago. I would love a scan of it. I'll pm you.

68jimmy · 02-06-2005, 12:34 PM

here it is...

bigcdawg99 · 02-06-2005, 01:46 PM

Can you make these factory columns work for a 700R4? If so how?

Bob Moore · 02-06-2005, 02:43 PM

I am confused as to which column you have Cobalt - stick or auto?

**COBALT** · 02-06-2005, 07:24 PM

Automatic 3 spd. for TH400

**COBALT** · 02-06-2005, 07:32 PM

Part of the problem is all of the parts in the column sort of depend on each other for smooth operation. If the washers, bearing, etc get put in wrong then the shifter might bind up, which is part of my problem. The diagram above shows how the shifter goes in, which I think I have right. The problem is the rest of the parts above the shifter that may not be allowing the shifter to move forward before sliding to one of the positions. If I know how all of the column goes together maybe I can find out why it's binding up and put it together right.

02-04-2005, 01:25 PM	#1
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	Rebuilding the automatic shift column... During my failed brakes experiment a couple of weeks ago my shifter on the column has gotten completely goofed up. I think I've taken this thing apart three times, and every time I think I have it together like it's supposed to only to have problems with it later. This time it's so goofed up I can barely shift, and that's only if I have my foot on the dash and I'm using my body's leverage to make it shift. Kinda hard to do. Anyway, does anyone have a good drawn-out idea how this shifter is SUPPOSED to go together??? Forget LMC's picture of the column in their catalog. That's what's gotten me in trouble in the first place. I need to know what parts go where and in what order. I don't want to have to take this thing apart again because it's not correct. I'll order whatever parts I need. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

02-04-2005, 04:47 PM	#2
68jimmy Registered User Join Date: Dec 2003 Location: albuquerque Posts: 431	Do you have a factory shop manual? When I rebuillt mine that's what I used as a reference... If not I could try and scan the pages in and send them to you. good luck __________________ 78 C10 LWB Super Cheyenne

02-04-2005, 07:25 PM	#3
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	I have one but I think I lost it a long time ago. I would love a scan of it. I'll pm you. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

02-06-2005, 12:34 PM	#4
68jimmy Registered User Join Date: Dec 2003 Location: albuquerque Posts: 431	here it is... Attached Images __________________ 78 C10 LWB Super Cheyenne

02-06-2005, 01:46 PM	#5
bigcdawg99 Registered User Join Date: Jan 2005 Location: Mesa, AZ Posts: 67	Can you make these factory columns work for a 700R4? If so how? __________________ 71 GMC Shortbed Fleetside (under construction) "I like guns. You got a gun, you don't have to work out." Chris Rock

02-06-2005, 02:43 PM	#6
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Auto or Manual I am confused as to which column you have Cobalt - stick or auto? __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

02-06-2005, 07:24 PM	#7
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	Automatic 3 spd. for TH400 __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

02-06-2005, 07:32 PM	#8
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	Part of the problem is all of the parts in the column sort of depend on each other for smooth operation. If the washers, bearing, etc get put in wrong then the shifter might bind up, which is part of my problem. The diagram above shows how the shifter goes in, which I think I have right. The problem is the rest of the parts above the shifter that may not be allowing the shifter to move forward before sliding to one of the positions. If I know how all of the column goes together maybe I can find out why it's binding up and put it together right. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.



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