2000 Chevy Blazer - - SWAYING / WANDERING problem that we can't figure out

I don't think jacking your blazer in the middle is your problem. The frame is plenty stout enough to handle the stress of jacking in the middle. I don't recommend it, but I don't thing it will cause your truck to wander. I caught the part where you said that you buy tires that are "sometimes new, sometimes used pull offs." I'd be willing to bet if the tires are mismatched it would cause handling problems. Even the cheaper new tires have caused handling problems I've been involved with for customers. My own truck pulled hard to the right and I checked the alignment twice on it and it was arrow straight both times. I notced the tire on my left front looked like it was wearing funny. I always check the air pressure in my tires so I know that was within specs. I replaced the tire because I didn't trust it and the pull went away. My suggestion for you is to see if you can find someone with a similar blazer and with the same tire size and switch wheels and tires for a test drive, see if it makes a difference, that way you can rule out the tires causing the wander concern.

It sounds like you are describing tire squirm. I had the same trouble years ago. The only remedy it to try a different brand of tire. You could also put in a little more air to see if it gets better. I won't go away with more air but it should improve. If you have a friend with the same tires , sway them around and give it a go. I think you'll find this will do the trick. Also check to make sure that the front and rear tires have the correct air pressure. Sometimes the rears require more pressure then the fronts to prevent this! Good Luck

No, I always get matching tires. And just last week, I replaced all 4 tires with brand new ones at a different establishment. I feel the frame is strong enough also to handle the pressure. My theory is that when one side goes up that way, that it is putting some kind of pressure on the opposite side somewhere or on something or it is causing something to pull out of place. When they jack it up, first the body comes up away from the suspension, then the suspension finally goes up, so maybe it is pulling something out of place when the body pulls up first.

Also, I did watch them put the lug nuts back on in the criss cross pattern so I don't feel it was that either. Remember, on the S-10 I had where they raised it on a lift, I had no problem at all. The only times I had problems was when they jacked the vehicles up that way (3 different vehicles).

Also, I forgot to mention, when I am in turns sometimes, I notice what feels like one front wheel trying to fight the other slightly. Not sure which.

Maybe they were using the jack on the sway bar or drag link and bent the crap out of it. Mike

IF it is because your going "off camber" then shame on GM with the design of the 2000 blazer. I've had my 1990 GMC Jimmy at about / that angle and it still tracks dead straight with 0 fingers on the wheel at 80mph. Couldn't tell you higher than that though :-) I can't help you, but my suggestion: Look elsewhere.

GMC Gremlin

JUST wanted to see if anyone had any New Ideas on my 3rd wandering GM vehicle. Thanks

I've been jacking up my chevy trucks just like that for 30 years and never had any problems like you mention. I did have a Chevy Utility body truck once that did as you say and it ended up being what the dealer called tire squirm. We played around with the tire pressures and found that a 10 lb difference from front to back worked best. Of course this was a 2500 series and the tires were not radials. We ended up putting 50 in front and 60 lbs in the back tires and the problem all but disapearred. I realize if you have radials you won't be able to have such difference in pressure but you could put the fronts at 30 and the rears at 35 to see if it helps at all. On one of the other trucks we had with the same problem we went to a different brand of tire and it went away also. Good luck I know the feeling of playing catch up while going down the highway. It suks!

I had a 95 Jimmy that had similar problems, problem was especially bad when hitting bumps or dips and one side would react more than the other. If I remember right, one side was a little higher also. What I did was adjust the torsion bars until the front end was level and kept adjusting until the front end reacted the same on both sides to the bumps. I did change tires and shocks which helped but didn't make as big a difference as adjusting the bars. What I figured was happening was one torsion bar was getting weaker or one was changed before I bought it but this seemed to clear up most of the problem although it never really went away completely.

I am looking at a 2004 Blazer and I hope that it doesnt have that problem.

Thanks Daryl, sounds like we had similar problems. I'll keep looking.

replying to Scott, chuck wrote: I have 2000 blazer doing same thiñg hàve you found what it was yet I have replaçed ever thing from front to back and still sawaying only thing did not change is torsion bars any one know whàt it could be started doing this out of the blue have replaçed ever thing under this blazer

Tires? Control arm bushings? Rear trailing arm bushings?

replying to Scott, WhiteCastle25 wrote: There's a reduced nut on the gear box, Allen key in center. Loosen 16mm bolt on top of gear box and tighten Allen key down then quarter turn backwards. Tighten down lock nut and that will take play from your steering