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 > General Truck Forums > All 4x4 Tech & Off Roading

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-08-2019, 01:48 AM   #1
68chevycst
Registered User
 
68chevycst's Avatar
 
Join Date: Aug 2008
Location: Meridian, ID
Posts: 82
72 gmc Sierra grande stuck in 4 wheel drive

I have a 72 gmc Sierra grande 1/2 ton 4x4 that is stuck in 4 wheel drive. It has a 205 transfer case. I cant get the transfer case shifter to move and the hubs wont unlock either. Any suggestions or advise?
__________________
68 Chevy CST Short Bed, 70 Chevy CST Short Bed, 70 Chevy Short Bed 4X4, 72 Chevy Cheyenne Super 4X4, 72 GMC 1/2 Ton 4x4 Sierra Grande, 72 Chevy 1/2 Ton Big Block Suburban Highlander, 72 Chevy 1/2 Ton 4x4 Suburban, 72 Chevy 1/2 Ton Cheyenne Super, 72 C50 Custom, 69 Chevy CST C30 tow truck, 71 Chevy Big Block C30
68chevycst is offline   Reply With Quote
Old 09-08-2019, 08:30 AM   #2
b454rat
Senior Member
 
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,469
Re: 72 gmc Sierra grande stuck in 4 wheel drive

Prolly shift linkage froze. Spray some penetrating lube on the pivot and the cross bar where hooks to the shift rails. I had one freeze on one. Hubs won't unlock cause there is tension on the driveline.
b454rat is offline   Reply With Quote
Old 09-08-2019, 08:57 AM   #3
Stocker
20' Daredevil (Ret)
 
Stocker's Avatar
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
Re: 72 gmc Sierra grande stuck in 4 wheel drive

If it's been driven on a hard surface (like pavement) the driveline might be bound up. Try driving slowly in reverse while steering left & right. If it's still bound up you might have to jack up a front tire, then you should be able to release that hub and take the TC out of 4WD.
__________________
- Mike -

1972 K20 LWB 350/350/205

RIP El Jay
Stocker is offline   Reply With Quote
Old 09-08-2019, 11:08 AM   #4
68chevycst
Registered User
 
68chevycst's Avatar
 
Join Date: Aug 2008
Location: Meridian, ID
Posts: 82
Re: 72 gmc Sierra grande stuck in 4 wheel drive

Thanks I will try those things!
__________________
68 Chevy CST Short Bed, 70 Chevy CST Short Bed, 70 Chevy Short Bed 4X4, 72 Chevy Cheyenne Super 4X4, 72 GMC 1/2 Ton 4x4 Sierra Grande, 72 Chevy 1/2 Ton Big Block Suburban Highlander, 72 Chevy 1/2 Ton 4x4 Suburban, 72 Chevy 1/2 Ton Cheyenne Super, 72 C50 Custom, 69 Chevy CST C30 tow truck, 71 Chevy Big Block C30
68chevycst is offline   Reply With Quote
Old 09-08-2019, 12:27 PM   #5
sweetk30
Registered User
 
sweetk30's Avatar
 
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
Re: 72 gmc Sierra grande stuck in 4 wheel drive

i like napa chain and cable lube . its a foamy oil that sticks real good for lasting lube . also spray the rails that go in the case the link bar is hooked to .

as said she is just bound up a bit .
__________________
77-k30lb BIG truck build .
87-k30lb budget beater build .
85-k30lb the plow machine build .
85-c10sb summer fun toy .
-----------------------------
HOLLEY SNIPER efi = worst case of p.i.t.a i ever had .

EDELBROCK pro flo 4 = best deal going so far . love my setup works great.
sweetk30 is offline   Reply With Quote
Old 10-17-2019, 12:40 AM   #6
El Dorado Jim
Registered User
 
Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
Re: 72 gmc Sierra grande stuck in 4 wheel drive

any update?
El Dorado Jim 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 03:00 AM.


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