Hi got a 2000 blazer ls 2 door 4x4 stock height on 31 inch mt's my problem is the whole right side of my blazer is 1 inch lower than the left side front and back. Does anyone know what could cause this could it be the leave springs. Any help would be greatly appreciated

 

Could be a weak or broken leaf in a rear spring or incorrect front chassis ride height adjustment.

 

Chevy Blazer 4x4 Torsion Bar Factory/Correct Setting Instructions.
If you have a 4x4 with independent front end suspension, then you have a torsion bar, and not a leaf, or coil spring suspension.

What is a torsion bar?
A torsion bar is a long solid bar, and both ends are hexagon shaped.

How does a torsion bar work?
Usually a coil spring is used to support your independent front suspension and give you the correct ride height. But, when the front axle shaft of a 4 x 4 is in the way of a coil spring, they use a torsion bar. One end fits into the hexagon shaped hole on the lower front suspension control arm, and the other into a hexagon shaped adjustable key in a frame cross member. The key has one bolt that either tightens or loosens the torque on the torsion bar via the key. When tightening the bolt, it turns the key and puts torque on the torsion bar raising the suspension. No torque on the torsion bar, and your suspension will be bottomed out, and too much torque and your suspension will be too high.

What damage can come from incorrect torsion bar height?
Incorrect torsion bar height and torque can cause many problems and damage to your CV joints, bearings, steering, shocks, ball joints, bushings and torsion bar.

What is Z height?
Z height is the factory set ride height for your front independent suspension to work correctly. And this height does not change even if you install a suspension lift kit.

How do you adjust your torsion bar to get the correct Z height for your suspension?
First, your vehicle should be on a level flat surface, engine off, in park, and with emergency brake on. Measure the distance from the center of the lower control arm pivot bolt, (this is the bolt that attaches your control arm to the frame) to the ground, and write it down. Now measure from the bottom of the steering knuckle edge (not the bolt or nut) to the ground, write it down. Now subtract the two measurements to figure your current ride height, a minimum ride height is 4"9/16" inches, a maximum ride height is 5"7/16" inches. Factory ride height is 4"7/8" inches.

If it is not at factory height, you must adjust the ride height. Adjusting the torsion bar bolt can be done without jacking up the vehicle. Tighten the torsion bar bolt to raise the ride height, and loosen the torsion bar bolt to lower the ride height. After each adjustment, shake the vehicle to settle the suspension before measuring again. Tightening the bolt to raise the suspension, it can be tough. Jacking up (always use jack stands and wheel blocks for safety) the vehicle makes it easier to tighten the bolt, but constant jacking and lowering and shaking on every adjustment can be time consuming.

After you have your correct Z/ride height, measure from the tip of the lower control arm bump stop, to the lower control arm. This can be a quick reference to check your Z/ride height after a full day of driving.
Usually the lower bump stop to lower control arm measurement is a 1/2 inch to 1 inch. These lower bump stops are supposed to be this close to the lower control arm, as they are part of the suspension. Also replace any lower control arm bump stop that is damaged.

 

Thanks for the help I'll adjust the torsion bars and do a good inspection on the leaf spring to see if that's the problem in the back

 

The distance between the two (level) horizontal lines is front chassis ride height, (aka Z height). Subtract the steering knuckle to ground measurement from the pivot bolt to ground measurement, the remainder is front chassis ride height.







4WD (except ZR2) = 4.6” to 5.0” (4.8” is preferred)

4WD ZR2 = 4.6” to 5.2” (4.9” is preferred)


If any adjustment is made to either torsion bar, a front wheel alignment is necessary.

 

I got mine back to the original ride height, and had no need for an alignment. But to each is own on that. And 4.9 is the same as 4"7/8"th inches, just incase you do not have a ruler in decimal inches like me.

 

The only way to know that a vehicle doesn't need a wheel alignment, is by checking it, on an alignment rack.


The reason the specs were added, was to help both ZR2 and non ZR2 owners.

 

Adjusting the torsion was pretty simple then?

 

Yes, pretty simple!