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09-08-2019, 01:48 AM
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#1 |
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Registered User
Join Date: Aug 2008
Location: Meridian, ID
Posts: 82
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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?
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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 |
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09-08-2019, 08:30 AM
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#2 |
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Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,469
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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.
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09-08-2019, 08:57 AM
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#3 |
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20' Daredevil (Ret)
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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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.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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09-08-2019, 11:08 AM
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#4 |
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Registered User
Join Date: Aug 2008
Location: Meridian, ID
Posts: 82
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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 |
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09-08-2019, 12:27 PM
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#5 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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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 .
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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. |
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10-17-2019, 12:40 AM
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#6 |
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Registered User
Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
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Re: 72 gmc Sierra grande stuck in 4 wheel drive
any update?
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