To who's ever intrested, I just copied a response that I had made to a fellow forum member.......you'll see why I copied and not wrote it out again.....it's longggggggg!! This is the instructions for lowering the C-5 (Important Note) If you have that ride control thingy, I'd fine out if your able to do this or not, reseach first before attempting this project.
First of all, how low do you want to go? is the most important question, you see, on the C-5, it has a true adjustable suspention, so if you want to go only as low as the adjustable suspention will let you go, just jack the car up, take the tires off, look in the arm section behind the bottom part of the shocks, at the fiberglass leaf spring where it sit's in the a-arm, you'll see a bolt/nut like thing in the middle of the leaf sprinf that sits in the bottom of the a-arm, just un-screw the bolt all the way out, dont worry, it can't come out all the way, it'll stop at a curtain point, put the tires back on do the other side of course, and drive a few feet to let it settle down to it's rideing height, now if your looking at slamming the car all the way down like what you see in the pictures that I posted this is how you do it,........Jack the front of the car up HIGH!! at the right places, and support it on jack stands, now, unbolt the "sway bar", un bolt the shocks from underneath, disconnect the abs sensor (If you have one) and be very careful doing so, get a floor jack, and jack the a-arm up a little and set a stack of blocks under the wheel rotor then let the jack down, with another block of wood, set the jack under the leaf spring on the bottom of the car, now, when you set the the jack with the wood on top of it under the leaf spring, make sure that the wood is as close to the bottom of the a-arm with out resting on it, you'll just want the wood and jack on the leaf spring, now jack the jack up just a little to take a small bit of pressure off the a-arm, back the nut out a little on the a-arm ball joint untill it's flush with the bolt that it's on, with a ruber mallet of a block of wood and a hammer, strike the top end of the nut & bolt, after a few strikes, it'll break free, (note)- this is to be done only if you dont have a ball joint seperater. Once thats free, jack the leaf spring up more untill the presure on the a-arm is gone, take the ball joint nut all the way off now, and the lower a-arm it'll be free floating, you should be able to push it down to the ground, now you'll have free access to the bolt thats on the leaf spring, take off the retainer clip, and unscrew the bolt all the way out! do this on both sides. now un bolt the 2 spring retainer's thats under the car, they are 2 metal clamps, that have 2 bolts through them, which are bolted to the frame of the car which holds the leaf spring in place, take them completely off. Now go to either side and pull the spring out, just enough to where you can get a steak knife of hacksaw blade to the rubber bushing thats glued on to the spring, saw that piece completely off! (HELPFUL HINT----At the same time that your sawing the rubber bushing off, lift up on the rubber bushing, away from the spring, that way, the knife or blade will not get caught between the rubber and spring, if you dont do this, it'll take you hours instead of minutes to cut the piece off!!) Now put the every thing back together and your done!! You'll notice that the other side will be much faster once you've done the first side! It took me about an half hr to 45 min to do the first side and about 15 mins to do the other side!! I hope that I explained this clearly enough to you and that it helps you!! The rear end?! All you have to do is take the floor jack with the block of wood, jack up the leaf spring on the rear, unbolt the bolt thats on the end, put a longer one in it's place, (Grade 8) get about an 8 to 9 inch bolt to be safe! thats it! You'll have to do some adjustments to even the car out. Take it easy!! It's the same instructions for lowering the rear of the C-4 also!
