My car is on my last damn nerve & I'm starting to get really pissed.
First off about three months ago the left half shaft started throwing grease so it has needed to be replaced for some time now. Not long after that a full coil broke off the front left spring & also took out the bearing cup it sits in so those need replaced. Now the damn front brakes are locking up at random times for no reason & giving the stability system active light &/or service stability system. I'm now getting the check gas cap light all the time, & the steering has had that annoying pop in it since the day I bought it & getting worse all the time.
Last night I pulled the ABS fuse so the brakes would stop locking up after they almost got me trunked by a truck. They just jammed on for no reason just after taking off from a stop light, & the more I got on the gas the harder they would apply. I had to pull over & shut the car off to get them to let off. I've known about most of the problems for some time but now they have gotten really bad all the sudden. It'* been one of those things that we just haven't had the money to fix but after this crap I cant ignore it anymore before it get my wife or myself in a wreck.
It figures that all this would happen at once because right now I'm flat broke, but have been trying to scrape together some money to fix the problems it has had. Every time I fix one thing on this POS car something else goes wrong.
Anyway aside from my rant, dose anyone know where the best starting point is with this stability system crap? Any easy ways to determine what sensor may be causing the problem. Pulling the ABS fuse has solved the problem of it engaging but is obviously not the way to fix the problem. Not only that but now my dash looks like a Christmas tree because the ABS, brake, track off & SES light are all on.
Thanks for any help...

Well, I'm sure others will chime in but, I had a similar issue in my wife' 99 Jimmy as you've described with your brakes issue. I let the dealer fix it but it ended up being a wheel speed sensor. I'm guessing a quick scan will tell.

For the gas cap issue, check out this recent thread.....
http://www.bonnevilleclub.com/forum/...hlight=gas+cap

Hang in there, Joe! Maybe there'* another member close by that could help? Anyone?

I agree that the most likely cause, in your case, for the brakes is one of the wheel speed sensors in the hub. The warning of service stability system is usually the steering position sensor. When the brakes become activated, it points more the the WSS. Taking it to the dealer, or a well equipped shop that has a scanner capable of reading that system, is the best way to locate the problem.

Follow the advice given in the link above for the check gas cap, and the clunk in the steering is likely the intermediate steering shaft. Lubing and/or replacing information is in techinfo,
http://www.bonnevilleclub.com/forum/...=article&k=111

Well I got lucky & got a hold of an old friend of mine who is a computer guru on new cars, I'm supposed to get back with him tomorrow & he is going to scan the car for me to see what we can find. He pretty much said what I had already done until than & just pull the ABS buss.
I found a few other problems in the meantime as well. My EGR is bad, My rear O2 sensor (which I just replaced both of last year) is bad, And although I'm not completely sure I think my right rear caliper is also bad. I'm starting to wonder if something with it isnt causing the problem. I replaced the brakes about two weeks ago & all of them were fine except this one.
On that one the back pad had worn all the way down to the metal & warped the rotor. The caliper looked OK & the piston went back in without any trouble. But what is making me suspect it is the new rotor has an uneven pattern on it. It looks like the pads are skipping across it & not wearing in correctly. If it not it I have another bad rotor somewhere because you can feel a slight pulse when on the brakes, but I can't tell where it'* coming from.

I hate this because I love this car, but I feel like I'm chasing my tail. It'* just one thing after another, after another. Last year I had to replace the LIM gaskets, crank position & cam position sensor, both O2 sensors,plug wires, & the front motor mount. Now all this crap is going on, it needs new tires, & an alignment. The heater quit working in the passenger seat & needs replaced & I'm sure theres more to come yet. And the crap only seams to happen at the worst times, go figure....

How many miles are on the car?

116000 so I know I can expect some problems, it just the matter of everything all going at once.

What O2 sensors did you buy? Anything other than AC/Delco or Denso are not likely to last very long.

Bosch, they were all the parts store stocked.
My next will be the AC Delco, I've never had much luck with anything Bosch makes.

As far as the gas-cap message, i had the message several times within a month or two. Finally, somebody told me that the rubber ring around the cap that makes the seal, get'* dry and corroded. I bought a brand new $7 gas cap with a nice new thick rubber seal and haven't had the message since for several months now.

My brakes were doing the same thing yours were, just not as bad. The ABS would kick for a second and then all my brake/traction lights were on. It did end up being the speed sensor inside the hub. A scan from the dealer will be able to tell you which wheel it is.

Unfortunately, when we buy used automobiles, we buy other peoples' problems. I was in the same boat, had all this stuff wrong with my car when i first got it. I've dumped a few thousand dollars into this car already, but it drives good after fixing all the major things. I still need new tires, oil pan gasket and possibly rear main seal, front engine mount, exhaust flex-pipe, and an alignment. Lots of things to fix on used cars, but these cars are great once they're fully operational with no major problems. Good luck to you.

Well I fixed the motor mount today. I ended up cutting apart the old one & used the thread ends & welded them to a piece of 1" heavy wall steel pipe for a solid mount. Worked out perfect other than a little more noticeable vibration in the car, But I expected that. The old mount didnt even last a year & came apart just like the original, the whole bottom was torn out. It'* nice hitting the gas & just feeling it go rather than & thud & than going...