ride height sensor

[LARRY70GS]

Again, the tires will show negative camber if the ride height is too low. Failure of the level control system is common. Mine was not working when I bought my 98 in 2004 at 85K. I used the FSM to diagnose and fix mine. It still worked at 212K when I sold the car this year. If I had it to do again, I would just eliminate the whole system and use the coil over shocks to correct the ride height. There is no adjustment for camber at the rear, it depends on proper ride height.

 

[BuickGirlFromMars]

Again, the tires will show negative camber if the ride height is too low. Failure of the level control system is common. Mine was not working when I bought my 98 in 2004 at 85K. I used the FSM to diagnose and fix mine. It still worked at 212K when I sold the car this year. If I had it to do again, I would just eliminate the whole system and use the coil over shocks to correct the ride height. There is no adjustment for camber at the rear, it depends on proper ride height.

If the ride height is correct then there is a solution, its shims. Otherwise the culprit is most likely wheel bearing or control arm bushings. but the rear springs could also be tired too.

 

[Russell Ballard]

If the ride height is correct then there is a solution, its shims. Otherwise the culprit is most likely wheel bearing or control arm bushings. but the rear springs could also be tired too.

Thanks for the info. I will check all of those. Do you think it’s possible for both rear bearings to wear out at the same time?

 

[HotZ28]

Did you ever get the negative camber on the rear tires? I also have a 2005 Lesabre with the same problem. Replaced the air ride socks but that did not fix the problem.

Did you take the car to an alignment specialist to see what the problem is? As mentioned, if you alter the ride height, the camber changes!

 

[LARRY70GS]

There is no camber adjustment at the rear, none. The Automatic Level Control is responsible for maintaining the correct ride height at the rear. Went through this years ago.

I replaced 4 front hub bearings in 19 years. The rear hub bearings were original and good at 212K.

The ALC is a common problem on these cars. There are replacement coil over rear shocks available to restore the correct ride height at the rear. That is the cheapest/easiest way to go.

 

[DeeWat]

Did you take the car to an alignment specialist to see what the problem is? As mentioned, if you alter the ride height, the camber changes!

So if I install coil over shocks to the rear to start with I assume the height will be better and help the camber situation? Right now my rear is a half inch higher then the front but camber is terrible

 

[DeeWat]

Again, the tires will show negative camber if the ride height is too low. Failure of the level control system is common. Mine was not working when I bought my 98 in 2004 at 85K. I used the FSM to diagnose and fix mine. It still worked at 212K when I sold the car this year. If I had it to do again, I would just eliminate the whole system and use the coil over shocks to correct the ride height. There is no adjustment for camber at the rear, it depends on proper ride height.

What is the FSM?

 

[MelsRegal]

What is the FSM?

FSM equal Factory Service Manual

 

[DeeWat]

Rear camber depends on proper ride height. If the ride height is low, rear tire camber will be negative. Had the same problem with my 98 Riviera. I fixed the ALC. The problem was a bad wire between the sensor and relay under the rear seat. The ALC works to this day. There was NO adjustment for camber on my 98. Ride height might look OK to you but still be low.

There are specifications and instructions on how to measure ride height in the Service Manual.

Another option is to use a special coil over shock to eliminate the ALC system. The coil overs set the ride height.

2005 BUICK LESABRE 3.8L V6 Suspension Conversion Kit | Shop Now at RockAuto

Suspension Parts and More for Your 2005 BUICK LESABRE at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

I converted to Monroe 90007c this morning and camber in the rear is 100% better , what a difference . Very happy with the results because camber was horrible and it was sitting a little low. It’s a touch high now but I’ve read that they will settle some over time. I’m thinking about installing quick struts on the front but for now I’m going to put some miles on my current setup to feel how bad or good the front actually is now that the rear is steady.. 2004 LeSabre 81k miles..