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08-13-2025, 07:58 PM
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#1 |
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Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,506
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Transfer case problem
2001 Silverado 1500 auto. NP 246 I pulled transfer case due to the pump rub pin hole ,new rear half and case saver plate . Also replaced inner front axle seal’s and was planing to do front tie rods. Ran to store and came back and put in 4 hi went to turn corner and it acted like it was locked up pulled in a big parking lot sand sure as sheet it was looking up very hard to turn. What the hell did I mess up sure thought it went back together right. Goes good I a straight line evidently I messed up somewhere
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60 |
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08-13-2025, 08:18 PM
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#2 |
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Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,363
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Re: Transfer case problem
Driving on pavement in 4wd is a big no no. It's a good way to blow up the TC.
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08-20-2025, 09:23 PM
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#3 |
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Moderator
 
Join Date: Jun 2017
Location: Greensburg. PA
Posts: 2,324
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Re: Transfer case problem
Pull the 4wd actuator plug off and remove the actuator.
Connect the actuator to the plug and test that it moves in and out to push in the engagement rod in 4wd. With the actuator out, push the internal rod in and make sure it springs back. Spin one front wheel and see is the diff itself is locked up without the actuator in place. If it is the front diff has an issue. If all that seems good, move to the transfer case and manually select 2wd using the control spud. You should now be able to rotate the front driveshaft. If you cant, pull the transfer case and redo the repairs. What fluid did you put in the front diff? What fluid did you put in the transfer case? 
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Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2025 Chevy Equinox
Last edited by AussieinNC; 08-24-2025 at 12:46 PM. |
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08-23-2025, 12:28 PM
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#4 |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 5,049
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Re: Transfer case problem
The NV246 uses the blue Autotrac II fluid.
GM # 88900402 / AC Delco 10-4017, 1QT bottle, Auto Trak II Transfer Case Fluid. Folks call it Smurf Blood... it's blue. If you use the wrong stuff it'll make the clutches in the transfer case angry.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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08-29-2025, 10:20 AM
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#5 |
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Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,506
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Re: Transfer case problem
Ok got it Thanks
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60 |
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Linear Mode
