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2000 GMC Sierra Torsion Bar Adj

post #1 of 11
Thread Starter 
When changing the oil this past weekend, I noticed a sign on the crossmember that houses the torsion bars with what looks like an adjustment nut that you can turn to raise or lower the front. Anyone know or have any expierence with this that can help me out?

I think the front sits a little too low and was hoping to just turn a wrench to level the truck out without a lift or leveling kit.

I did not check the owners manual, but will if I dont get a response, next step will be to call a local ORI dealer, but hoping you buggy drivers can help me out first.
post #2 of 11

2 in the picture is the adjustment bolt for the torsion bar. Turn it clockwise (in) to raise the (z height) vehicle. Remeber that the higher you go the stiffer it gets, so you may notice its a little bumpier up front then it used to be.
post #3 of 11
What a perfect, specific answer to a specific question. Well done.
post #4 of 11
Your alignment may need adjustment after you raise the nose up. Mine did. I went one step past turning the adjustment screw. I swapped out the torsion key for a model that allowed me to lift the front up to 3.5inches. Needless to say, I needed an alignment after that. It's like a whole new truck once you level it off. It does stiffen the ride a bit up front, but I think it's an improvement to be honest. Not sure if it accelerates front end wear of things like ball joints or tie rods, but I'm very happy with the look and feel of the truck now.
post #5 of 11
RG, raising the front of a GM with the torsion bars works OK. It does change wheel travel. Imagine your truck on a lift (change the oil) with the lift lifting from the frame, not the axles. The front wheels will droop down. When the torsion bars are used to raise the truck some of that droop is taken away.

When you travel down the road and come to a spot where the front wheel will go down and extend into the dip, it goes down less.

On the other hand on a compression bump (a raised part of the road) the wheel is forced up into the fender-well. There will be more force resisting that compression.

Turning the torsion bars up or down will change front end alignment, after making adjustments you will need an alignment.

If you "lift" the front of your truck with this method, you can gain about 2-3inches. Forcing more will change the geometry in the alignment and affect tire wear. A "lift kit" to get more height costs a fair amount and takes a day to install (if you know what you are doing, and have the tools to do it) and you will need an alignment also.
post #6 of 11
there are "keys" out there that can you give you 2 inches without affecting ride quality. ( suspension maxx, ready lift, or as always ebay) some people will do this to "level the vehicle"
ei - Chevy Tahoe - has about 1' rake from the rear. so you can LEVEL the truck with just the stock keys buy turning them about a turn or two. but like previously stated this will harsh up the ride. the companies stated above (and plenty more) have a slighter degree on the key to get the extra height with less affect on the ride quality.

i have a chevy tahoe 05. with the keys im getting and spacers in the back ill be sitting 3" higher with new shocks all for the low price of under $500 and should be able to run 33x11.5 with no rub on the stock rim ...
post #7 of 11
I Have an 05 sierra. I put 3 turns on mine. Gained about 3/4inch. I was told by my brother whos a service manager for gm that I shouldnt go much more then that as it might increase wear on the front end. There is a kit out there im looking to get from roughcounty it lifts the truck 2inches and levels off the front. It includes new tortion keys, shocks, and lift blocks for the rear. For 200$ that sounds nice. I aggree the front sits alittle low.
post #8 of 11
Check out the Proryde web site it will give you alot of imfo. I insstal this kit on all types of trucks. And Yes you do need an alignment after you do anything with the adjustment. Also remember that on most GM trucks they have a decal that says not to mess with the adjustment due to loss of control and handling problems. Any ? pm me I also instal and sell these kits at my house but can not do the alignment at home.
post #9 of 11
I have a '99 Sierra 2500 and adjusted the torsion bars within weeks after getting it. Did it at a buddy's shop. I don't recall how many turns on the bar we did, as I was not cranking on the wrench. The one thing we did do, and I'd suggest you do it too, is to measure from the ground to a point on the frame on each side of the truck. Adjust so they are equal. We did this on a shop floor, so you'll need to find something just as level. We leveled off the truck and it did not need an alignment. It did roughen up the ride considerably (but IMHO, the ride needed a little roughening up anyway...)
post #10 of 11
the main thing you have to watch is the shock length. The warning decal tells you by raising the suspention you shorten the shock travel ...If the shock breaks it can take a brake line with it.
post #11 of 11
depending on what you are planning on doing. if you plan on just riasing it for looks 2" of front lift, the stock shocks shold be ok. if you plan on flexing or going over 2" then longer shocks are a must.

but as always to do it right new shocks are always recommended
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