Question about 1999 GMC Suburban

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Jerky steering in 1999 GMC Suburban

When the steering wheel is turned to the right or left, it feels like the steering slips, or lets go for a couple of seconds. It jerks, but not all the time, only occasionally. Sometimes more than others, especially when it's cold.
It has gradually become worse, and we are hoping to fix this ourselves, if we can figure out what it is that needs fixed!
You can feel it especially in the front passanger tire, or when turning to the right. I haven't noticed it when in reverse.

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A common problem with this model. Its the sterring speed sensor.A small disc shaped switch at the bottom of the steering shaft next to the floor. IT actually slips over the steering shaft, so, you'll have to disconnect shaft,pull column back towads you to replace. The reason for this switch is to stiffen steering at higher speed.Once it goes bad it starts sending mixed signals to the steering box. A simple fix? Unplug it at the switch like I did mine after I replaced it the second time.

Posted on Jan 08, 2009

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Steering position sensor.Fairly common.Located on steering column under dash.

Posted on Aug 25, 2009

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Hello
Have you tested for play in the steering with the truck jacked up with the front wheels in the air. As you will be-able to see & feel all the joints on the truck, the thew most common one I have found is the universel joint down on the columnto to the steering box.

Hope you find this helpful
www.limotec.co.uk
regards Paul

Posted on Jan 11, 2009

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The steering is a very complex bit of gear. and it could be very dangerous to mess about with.is there a self employed mechanic near you? an old style mechanic thet does not rely n computers would be best and cheaper. P.S do not put this off it could cause a bad accident. joe

Posted on Nov 21, 2008

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Key will go in ignition but will not turn or unclock sterring wheel

Posted on Dec 29, 2009

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I think that it is overstearing. It feels like your in 4 wheel drive when turning sharp, but the truck is not in 4 wheel drive (jacked up one side at a time, tires spin freely, also mech. shop checked...


The tirerods on the burbans can get wedged when turning sharp. Have seen a couple do it.

Just to double-check, you can Check for your stearing trim is in the middle and not pushed aside. Once you have done that, take everything apart, gears out and etc... turn on the car. Let the servo center and pop everything in as carefully as you can and close as the middle as you can. Re-assemble and see if it's any better.

Also, check your servo wires leading onto the board. See if any of them are loose or have even fallen off.

Another possibility that I have seen is when you turn the wheel all the way to the lock, the power steering pump is still trying to turn it further, which is why the steering feels jerky. You can blow up the pump, or a hose, by holding the wheel against the lock. You won't turn any wider if you let the wheel come back one quarter turn, but you will take the pressure off of the pump.

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samboiv

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