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-   -   72 gmc Sierra grande stuck in 4 wheel drive (https://67-72chevytrucks.com/vboard/showthread.php?t=793117)

68chevycst 09-08-2019 01:48 AM

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?

b454rat 09-08-2019 08:30 AM

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.

Stocker 09-08-2019 08:57 AM

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.

68chevycst 09-08-2019 11:08 AM

Re: 72 gmc Sierra grande stuck in 4 wheel drive
 
Thanks I will try those things!

sweetk30 09-08-2019 12:27 PM

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 .

El Dorado Jim 10-17-2019 12:40 AM

Re: 72 gmc Sierra grande stuck in 4 wheel drive
 
any update?


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