Truck wants to spin out on washboard gravel

Discussion in '4x4 trucks / off road' started by RiggRMortis, Apr 27, 2015.

  1. RiggRMortis

    RiggRMortis Full Member

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    #1 RiggRMortis, Apr 27, 2015
    Last edited: Apr 27, 2015
    Alright, this is really bugging me... My truck (94 Suburban K1500) will randomly try to spin/slide when I hit "washboard" on a gravel road. This doesn't always happen, and happens seldom enough that I tend to get comfortable and let my guard down. I've driven plenty of rear wheel drive trucks, cars and SUV's on gravel and never encountered this issue without going excessively fast or being in a turn. This truck, however, will randomly try and kick the back end out going straight down the road. I've had it happen several times, even going as slow as 35 or 40. The other day I was doing 45 and it kicked the back end out and **** near put me into a barbed wire fence.

    I drive on gravel a lot to get to my fishing spots and just out aimlessly driving, so this is a big issue for me. Around here the speed limit on gravel roads is 55, most people do 65 or 70 on roads they know well. So when I'm putzing along at 40, people tend to get upset when they come up on me, and it's just annoying to have to drive so slow.

    Is there something that causes this on a vehicle? Is there something I can do to resolve this, or at least make it a bit better? My wife also drives this truck occasionally, and though she's a good driver, she doesn't have the experience I do from driving on gravel for 15 years. I'd hate for it to happen to her at some point and end up with a rolled truck and an injured wife. (Either from the accident or from me for wrecking my truck. :flamingmad: )
     
  2. Kennyray

    Kennyray Moderator
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    I would be replacing shocks, I think that is what causing your problem.
     
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  3. poncho62

    poncho62 Full Member

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    Shocks may help some, but a solid rear axle with leaf springs is going to do that. I drive a 2012 van for work....it will bounce on the washboard roads too......Just have to slow down. Going at 40-50 is beating the **** out of it on those roads.
     
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  4. Bad88

    Bad88 Full Member

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    Suspension is tight.
     
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  5. gmctrucks

    gmctrucks Full Member

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    Maybe the spider gears are welded.

    Does one tire chirp when making a turn on pavement?
     
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  6. RiggRMortis

    RiggRMortis Full Member

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    Shocks are already on my list (long list) of things to do. My 85 Crown Vic doesn't do this until about 55+ and it's got a solid rear with leafs.

    The rear doesn't chirp at all and the one and only burnout I did/will do (Just to see if the old girl could do it) left just one mark.
     
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  7. dirtrider73068

    dirtrider73068 Senior Moderator
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    Could be suspesnsion is too tight or heavy maybe a lighter shock or springs to let the suspension do what its suppose to do, shocks are made to absorb the bounces maybe shock are either too stiff or worn out letting the rear bounce instead of absorbing the roughness.
     
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  8. leolkfrm

    leolkfrm Full Member

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    does it have posi (i think it was g60 code)? might need to change fluid and add the additive to it
     
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  9. MrMarty51

    MrMarty51 Full Member

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    New shocks for sure. While You are at it, also check the anti sway bar mountings.
     
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  10. RiggRMortis

    RiggRMortis Full Member

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    Thanks folks! Work/life is hectic currently so not much time to check anything. If it had posi it would have left two blackies when I did the burn out, wouldn't it have?
     
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