Question about 1999 Buick LeSabre

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99 Buick lasabre

Rear end sitting up - could a shock be bad or is there some kind of pump in the rear that could be stuck

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  • Roberta Smith
    Roberta Smith May 11, 2010

    have a look at the shock absorbers to see if one is broken or unbolted.

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  • Buick Master
  • 6,982 Answers

If you have a "load leveling " system, the actuator arm is either disconnected or the actuator itself is malfunctioning.

Posted on Feb 16, 2009

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I have a 2004 buick rainer. if the suv sits for a peiod of time - 12 hours the rear of the suv lowers by 4 to 5 inches. when the suv is started the compressors pumps the rear end up to where it should...


I have seen alot of the rear shocks that leak on these vehicles... also there is a nother not so common problem of the solinoid failing open and letting the air drain back through the compresor... I would try and spray the shocks around the rubber boot with a soapy water solution and check for bubb;es indicating a leak.

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Replaced rear shocks and when you turn the key on the car jacks all the way up


Check the vehicle height sensor located at the rear trailing axle. It looks like a rod with 2 ball studs on both ends, this vehicle has air ride suspension, an air compressor operates as soon as the key is on, it gets feedback from the level sensor indicating the vehicle height via the height sensor, if it is disconnected, hanging down it thinks the vehicle is sitting low and keeps pumping air into the shocks until it sees a feedback from the sensor, it will eventually stop at its max travel.

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On the LaSabres they have a fuel tank pressure sensor and a fuel level sensor if either one has to be replaced they are built in to the fuel pump.You can get to the fuel pump by removing the rear seat and removing the panel to remove the pump.The fuel pump is located in the tank.

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The rear of my 2002 buick park avenue car ride real bad. it use to be smooth riding but now you feel every dip or hole in the road. When i cut the car on in the back i hear something like some kind of a...


Your car is kind of new so I would be shocked if the shocks or struts or springs depending on the model are bad but you may want to check them. In regards to hearing the motor running in the back sounds like it is your fuel pump. hope this helps

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2 Answers

Rear end sitting really low to the ground what could be wrong with my car?


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This is an expensive repair sometimes and you may want to replace this system with inflatable air bags that fit inside the rear coil springs and then are inflated. I think they cost about $80.00 or $120.00 depending on the car.

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