Transfercase won't shift? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TwoFiftyShifter · 12-09-2008, 11:09 PM

I believe my truck has an NP205, but it is stuck in 4 low, it worked a couple years ago, but it's a plowtruck so it doesn't need to be in anything BUT 4low.... How do you think I can get it to shift?

DirtyLarry · 12-10-2008, 12:40 AM

Being that you are in NY where the roadsalt gets almost as deep as the snow I suspect the shift lever pivot at the tcase adapter is badly rusted and seized up. You will need to crawl under it and see if you can loosen the pivot bolt and remove it in order to lube it up. Yours may even have a grease zirk on the pivot bolt. If it does, pump as much grease in there as you can and keep wiggling the shifter. I really doubt it is anything internal to the tcase. If the tcase actually turns out to be a 203 then start lubing up the floor shifter mechanism on the underside of the truck.

**special-K** · 12-10-2008, 08:17 AM

Does it feel like the lever won`t budge or like it wants to move but something is holding it?The pivot could br froze from rust as Larry mentioned.Or,the case is in a bind.Have you tryed backing while you try to shift,Then forward,then back...?I`ve had one bind up and I broke the pivot bolt just from binding.That was on pavement.A transfer case should never be left in one mode for too long of a period.The same for lock-out hubs.

TwoFiftyShifter · 12-10-2008, 01:18 PM

I can pull it backward, but it just never shifts. I'll check it out and lube accordingly, thanks guys.

**Dieselwrencher** · 12-10-2008, 09:18 PM

Does it pull backward easy or hard?

TwoFiftyShifter · 12-11-2008, 09:01 PM

Well, there was no garage space and it was raining, so I fixed this problem differentky. I just got in the truck, fired it up and yanked the T/C shifter hardcore. It works fine now, 4L 4H and 2H. Thanks.

12-09-2008, 11:09 PM	#1
TwoFiftyShifter Registered User Join Date: Nov 2008 Location: Gwinnett GA Posts: 1,803	Transfercase won't shift? I believe my truck has an NP205, but it is stuck in 4 low, it worked a couple years ago, but it's a plowtruck so it doesn't need to be in anything BUT 4low.... How do you think I can get it to shift? __________________ 1982 K10 SWB 1987 V20 - Sold - Doh!

12-10-2008, 12:40 AM	#2
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Transfercase won't shift? Being that you are in NY where the roadsalt gets almost as deep as the snow I suspect the shift lever pivot at the tcase adapter is badly rusted and seized up. You will need to crawl under it and see if you can loosen the pivot bolt and remove it in order to lube it up. Yours may even have a grease zirk on the pivot bolt. If it does, pump as much grease in there as you can and keep wiggling the shifter. I really doubt it is anything internal to the tcase. If the tcase actually turns out to be a 203 then start lubing up the floor shifter mechanism on the underside of the truck. __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

12-10-2008, 08:17 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Transfercase won't shift? Does it feel like the lever won`t budge or like it wants to move but something is holding it?The pivot could br froze from rust as Larry mentioned.Or,the case is in a bind.Have you tryed backing while you try to shift,Then forward,then back...?I`ve had one bind up and I broke the pivot bolt just from binding.That was on pavement.A transfer case should never be left in one mode for too long of a period.The same for lock-out hubs. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

12-10-2008, 01:18 PM	#4
TwoFiftyShifter Registered User Join Date: Nov 2008 Location: Gwinnett GA Posts: 1,803	Re: Transfercase won't shift? I can pull it backward, but it just never shifts. I'll check it out and lube accordingly, thanks guys. __________________ 1982 K10 SWB 1987 V20 - Sold - Doh!

12-10-2008, 09:18 PM	#5
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,142	Re: Transfercase won't shift? Does it pull backward easy or hard? __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

12-11-2008, 09:01 PM	#6
TwoFiftyShifter Registered User Join Date: Nov 2008 Location: Gwinnett GA Posts: 1,803	Re: Transfercase won't shift? Well, there was no garage space and it was raining, so I fixed this problem differentky. I just got in the truck, fired it up and yanked the T/C shifter hardcore. It works fine now, 4L 4H and 2H. Thanks. __________________ 1982 K10 SWB 1987 V20 - Sold - Doh!



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