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  1. #1
    Newbie Californiadad's Avatar
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    Default 1997 Chevy K1500 4x4 (Will not go into 4 wheel high)

    Hello all,

    I just picked up a 1997 K1500 4x4. My problem is I have 4wheel drive low but no 4 wheel drive high. I just replaced the actuator on the front diff, but still no 4WH. what should I check next?

    Also should I be able to switch into 4 wheel high while the truck is in "D" Drive? I know you need to be in "N" for 4 wheel low.

    Thanks
    David from California

  2. #2
    OBS Enthusiast Cartman372's Avatar
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    Quote Originally Posted by Californiadad View Post
    Hello all,

    I just picked up a 1997 K1500 4x4. My problem is I have 4wheel drive low but no 4 wheel drive high. I just replaced the actuator on the front diff, but still no 4WH. what should I check next?

    Also should I be able to switch into 4 wheel high while the truck is in "D" Drive? I know you need to be in "N" for 4 wheel low.

    Thanks
    David from California
    Well I do know you should be able to switch into 4-hi while in "D" as I can do it with my truck. Usually people end up with no 4wd at all, I haven't heard of 4wd-lo but no 4wd-hi

  3. #3
    Newbie Californiadad's Avatar
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    Yeah.. The funny thing is I think it worked once or twice in 4wh while in D, but it would just flash for a sec and then go right back into 2WD.

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    You sure the actuator is good and the wiring that goes to it??? Will it go into 4 High if you shift while in park/neutral??
    Eugene

    1993 Chevrolet 1500 Ext Cab Shortbox 4x4 Winter Beater/Garbage Hauler/All Around Helper Sold!!!

    2006 GMC Sierra 2500HD Crew Cab 6L Tow Toy

  5. #5
    Newbie Californiadad's Avatar
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    If i put the truck in "N" and push the 4wh button, both 4wh and low lights flash a few times then goes back to 2wd. but if i push the 4wL button I hear a clunk and the 4wl light stays lite.

  6. #6
    I'm Awesome Fobroader's Avatar
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    Ohhh, you have the push button 4wd thing, hmmm, I dont know then man, could be a simple wiring problem then. Check the wiring on the back of your dash switch and then trace it to the source and the to the actuator. Then check your grounds. Does the transfer case sound ok, no grinding or expensive crunching noises??
    Eugene

    1993 Chevrolet 1500 Ext Cab Shortbox 4x4 Winter Beater/Garbage Hauler/All Around Helper Sold!!!

    2006 GMC Sierra 2500HD Crew Cab 6L Tow Toy

  7. #7
    Newbie Californiadad's Avatar
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    Yeah the transfer case sound good when I goto 4 wheel low.

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    Newbie Californiadad's Avatar
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    Any other ideas???

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    Newbie Californiadad's Avatar
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    Today I tried the oldest trick in the book and just unhooked the battery for a few hrs, and after doing that the 4wd high works just fine now!!!! Must of needed a reset.

  10. #10
    Newbie intimidator4x4's Avatar
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    Mine just started doing the same thing, I'll go do what you did
    1991 Z71 RCSB /6" Superlift w/ 3" body lift/ 35x12.50 BFG/AT on 15x10 Eagles

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