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 04-14-2015, 10:33 PM   #1
HBlue
Registered User
 
Join Date: May 2014
Location: Louisiana
Posts: 28
Gear Shift problem

I have a 76 Custome Deluxe with the 350 Automatic Trans.

What would cause the gear shift to not lock into place?

When I shift from Park to Drive, it does not go into gear.
I have to go to 2 or 1 for it to go into gear, then go back up to N and back down to Drive.

When I shift from D to R, I have to go nearly to P for it to go into reverse.

It just started this a couple of days ago. Is there some linkage I need to adjust.

thanks for your help.
HBlue is offline   Reply With Quote
Old 04-14-2015, 11:28 PM   #2
lilpoindexter
Registered User
 
lilpoindexter's Avatar
 
Join Date: Sep 2010
Location: los angeles
Posts: 1,134
Re: Gear Shift problem

Detents in the shifter worn, or linkage worn.
lilpoindexter is offline   Reply With Quote
Old 04-15-2015, 07:35 AM   #3
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,226
Re: Gear Shift problem

I would guess the linkage got out of adjustment.

Other than Park the actual detents are in the transmission itself. There is a cantilvered spring which engages a "roostercomb", and that's what gives you the "feel".

Take a look under the truck. You should see a rod that goes down from the steering column to the trans. There's a little "barrel" attachment with a bolt on it.

Chock your wheels so the truck doesn't roll. Put the shifter in "N"; go under the truck and loosen that barrel; click the trans lever around until the trans itself is firmly in neutral. Tighten the barrel bolt back up.

If that doesn't do it then I would guess something has happened to the spring/roostercomb arrangement inside the trans. Or may e something happened to the cross shaft at the frame, like the spring broke or the half spherical plastic washer fell out.

K
__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

Last edited by Keith Seymore; 04-15-2015 at 07:52 AM.
Keith Seymore is offline   Reply With Quote
Old 04-15-2015, 09:38 PM   #4
HBlue
Registered User
 
Join Date: May 2014
Location: Louisiana
Posts: 28
Re: Gear Shift problem

thanks for the suggestions.

Everything outside looks fine and is tight.

I tried what you said and it did not help, so it must be the spring/roostercomb.

what's next? Can I drop the pan and replace some parts?
HBlue is offline   Reply With Quote
Old 04-16-2015, 08:09 AM   #5
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,226
Re: Gear Shift problem

Yes. You can drop the pan and have a look.

K
__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/
Keith Seymore is offline   Reply With Quote
Reply

Bookmarks


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 07:12 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com