1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

4x4 shifting question from a noob

Discussion in 'Transmission & Transfer Case' started by Giant Rock, Sep 30, 2020.

  1. Giant Rock

    Giant Rock Member

    Posts:
    37
    Likes Received:
    27
    Joined:
    Sep 16, 2020
    Location:
    Joshua Tree, CA
    First Name:
    Cole
    Truck Year:
    1990
    Truck Model:
    Suburban v1500
    Engine Size:
    5.7 V8
    Can you point me in the direction of the manual? Did a search and wasn't able to find it.
     
  2. shiftpro

    shiftpro Full Access Member

    Posts:
    3,568
    Likes Received:
    3,600
    Joined:
    Aug 31, 2012
    Location:
    BC Canada
    First Name:
    shiftpro
    Truck Year:
    73-87
    Truck Model:
    1500, 2500, 3500
    Engine Size:
    350, 383, 454, 496!
    Regarding 4H shifts, I go in and out of 4H at highway speeds all the time, and have done this forever. 208, 205...

    Winter driving in BC on mountain highways as well as logging roads.

    Getting into 4L with an automatic I need a full stop and then into neutral before I look for Low.
     
    bucket and Vbb199 like this.
  3. Honest Bob

    Honest Bob Junior Member

    Posts:
    5
    Likes Received:
    3
    Joined:
    Feb 23, 2020
    Location:
    Easton PA
    First Name:
    Ben
    Truck Year:
    1975
    Truck Model:
    K30
    Engine Size:
    LS 4.8
    With my np205 and 4l80e I have to shut the truck off to get into 4 low from a stop without grinding (makes the same sound as if you put a moving truck into park while its moving if I try in neutral).
     
  4. Giant Rock

    Giant Rock Member

    Posts:
    37
    Likes Received:
    27
    Joined:
    Sep 16, 2020
    Location:
    Joshua Tree, CA
    First Name:
    Cole
    Truck Year:
    1990
    Truck Model:
    Suburban v1500
    Engine Size:
    5.7 V8
    Ok I'll give that a try as well. So do you typically use the coast in neutral method then when you aren't already stopped to shift into 4L?
     
  5. Frankenchevy

    Frankenchevy Lying Dog-Faced Pony Soldier Supporting Member

    Posts:
    4,103
    Likes Received:
    3,966
    Joined:
    Jan 3, 2018
    Location:
    USA
    First Name:
    Jeremy
    Truck Year:
    Square
    Truck Model:
    CUCV
    Engine Size:
    Small
    Yes, neutral. I’m sure you can shift 4h while moving, I’ve just never tried. I also go in reverse for 30 feet when shifting to/from 4wd and locking/unlocking hubs. I do all the anal retentive old man stuff that’s supposed to help stuff fully engage/disengage under low stress—all of which may be completely unnecessary.
     
    78C10BigTen and FireTruck1984 like this.
  6. skysurfer

    skysurfer Full Access Member

    Posts:
    2,335
    Likes Received:
    892
    Joined:
    Oct 23, 2010
    Location:
    west coast
    First Name:
    John
    Truck Year:
    1989 Suburban
    Truck Model:
    V2500
    Engine Size:
    5.7/TH400/NP241C
    I always did that with the oem auto hubs because someone told me that's how it's done. When I converted to Warn 20990 manual hubs I wasn't sure if backing was necessary so I called Warn's tech line. The guy that answered was like "What? Backing up?? (laughing) Nooo...that's very old school and completely unnecessary with our products."
     
  7. DoubleDingo

    DoubleDingo BLM=Bureau of Land Management

    Posts:
    5,455
    Likes Received:
    4,239
    Joined:
    Jul 3, 2012
    Location:
    Right where I am
    First Name:
    Bagoomba
    Truck Year:
    1981, 1965
    Truck Model:
    81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
    Engine Size:
    Carb'ed Vortec 350; 1972 L48 350
    @Giant Rock You are clearly concerned about the grinding. I understand that, but you are way overthinking this. As others have said, 4Lo is not what you needed at the time of you being stuck, and most four-wheeling can be done in 4Hi. My Jeep Cherokee can be shifted into 4Hi at any legal speed, of course it's not a GM product, but it will grind when shifting into 4Lo, and I have never thought twice about it. A slow roll or at a stop, shift into 4 and go.
     
    Giant Rock likes this.
  8. Nonstop

    Nonstop Full Access Member

    Posts:
    394
    Likes Received:
    950
    Joined:
    Nov 16, 2014
    Location:
    Ca
    First Name:
    Nick
    Truck Year:
    1985
    Truck Model:
    K2500
    Engine Size:
    454
    ECB87A6C-6E14-45DC-8FB1-3EB22E2337FD.jpeg

    From 1985 owner’s manual, NP208, but should be the same for NP241.
     
    Giant Rock and DoubleDingo like this.
  9. dvdswan

    dvdswan Full Access Member

    Posts:
    1,527
    Likes Received:
    956
    Joined:
    Mar 11, 2014
    Location:
    Port Orchard, WA
    First Name:
    Dave
    Truck Year:
    1978
    Truck Model:
    K10
    Engine Size:
    350
    FYI, the grinding you are hearing is from the transmission input shaft free-turning which "cause and effect", as you shift into 4L, you pass thru neutral on the t/case which allows the output shaft of the transmission to free-turn as there is no resistance on it, this allows the t/case input shaft to turn-freely. The gears are not lined up as it was in 2H/4H and you hear the grinding of the t/case gears.

    You can shift into 4L with the transmission in park, but you may need to jerk it into gear as the free movement of the gears is now stopped.

    Neutral is the lesser of 2 evils.

    In newer vehicles with the push button 4WD, you get a clunk when it engages 4L as the gears align themselves.
     
    EvilGenius and DoubleDingo like this.
  10. Bextreme04

    Bextreme04 Full Access Member

    Posts:
    643
    Likes Received:
    594
    Joined:
    May 13, 2019
    Location:
    Oregon
    First Name:
    Eric
    Truck Year:
    1980
    Truck Model:
    K25
    Engine Size:
    350-4bbl
    That's what I have always done wit hall of my vehicles as well. The only time I've ever had gear grinding is if you stop in neutral... you need to firmly but smoothly push it right past neutral.
     
    DoubleDingo likes this.
  11. The88

    The88 Mhmm

    Posts:
    987
    Likes Received:
    1,170
    Joined:
    Dec 9, 2015
    Location:
    South Louisiana
    First Name:
    ThatGuy
    Truck Year:
    88
    Truck Model:
    K5
    Engine Size:
    5.7
    In a nut shell GM is telling you if you want low range just jam her in there. No slow or half stroking. Just go for the money shot.... Oh and welcome by the way!
     
    Last edited: Sep 30, 2020
  12. Giant Rock

    Giant Rock Member

    Posts:
    37
    Likes Received:
    27
    Joined:
    Sep 16, 2020
    Location:
    Joshua Tree, CA
    First Name:
    Cole
    Truck Year:
    1990
    Truck Model:
    Suburban v1500
    Engine Size:
    5.7 V8
    Dude thanks so much posting this and thanks to everyone who commented. Just went for a test drive and it seems that the main thing is to:

    1. Stop 2. Put truck in Neutral 3. Shift the 4x4 lever in one swift motion all the way to 4L. Worked perfectly.

    Also I am taking the advice that for most stuff I really just need to pop into 4Hi and reserve 4L for hill climbs or if someone needs to be pulled out I guess. In any case, this noob got a little more educated today, thanks for that!

     
    TubeTruck, WFO, The88 and 2 others like this.
  13. DoubleDingo

    DoubleDingo BLM=Bureau of Land Management

    Posts:
    5,455
    Likes Received:
    4,239
    Joined:
    Jul 3, 2012
    Location:
    Right where I am
    First Name:
    Bagoomba
    Truck Year:
    1981, 1965
    Truck Model:
    81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
    Engine Size:
    Carb'ed Vortec 350; 1972 L48 350
    Nice photo
     
  14. AuroraGirl

    AuroraGirl Supporting Member Supporting Member

    Age:
    22
    Posts:
    3,173
    Likes Received:
    1,763
    Joined:
    Sep 8, 2019
    Location:
    Northern Wisconsin
    First Name:
    Taylor
    Truck Year:
    1978, 1980
    Truck Model:
    K10, K25
    Engine Size:
    400(?), 350
    My NP208 I always put in neutral, find flat ground, stop, put in 4lo or 4hi, put in gear and go, if im changing between them i might just clutch in(same function as neutral in this case i think) and always try to do it still. Ive not attempted to do it while moving, the amount of gear multiplying 4lo does in 1st gear(not even Low granny gear) is enough to make sure to clutch in carefully so i dont buck it!. 4hi is pretty forgiving to me shift wise.
     
  15. Grit dog

    Grit dog Full Access Member

    Posts:
    723
    Likes Received:
    743
    Joined:
    May 18, 2020
    Location:
    Washington
    First Name:
    Todd
    Truck Year:
    1986
    Truck Model:
    K20
    Engine Size:
    454
    208 and 241 can be shifted from 2hi to 4hi any speed and back.
    Make sure hubs are locked first. Not pretty if shifting at speed with unlocked hubs.
    Idk about auto hubs, speaking for manual hub
     
    bucket likes this.

Share This Page