Question about 2004 Buick Rainier

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Diagnose buick rainier air suspension

My rear end is low. the compressor runs but no lift. The system was checked for leaks with soapy water, none were found.

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6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: 2004 BUICK RAINIER

These are side products of the all wheel drive system, incombo with the locking rear dfferentials.

You'll find the auto-lockers will tend to do that following a tight turn, particularly when you're doing it quickly.

The thud is similar in nature; it's just the All wheel system trying to figure out where to put the power.

Posted on Nov 04, 2008

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michigan man
  • 3533 Answers

SOURCE: Replace Rear Shock Air Compressor

i am not really sure but for the most part its under the hood just inside one of the fenders but i would like to give you this number they only sells GM- parts its Schram auto & truck parts # 1-800-292-1032

Posted on Feb 26, 2009

michigan man
  • 3533 Answers

SOURCE: Need diagram of 1993 Buick Regal Gran Sport suspension

try www.autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you or you can try www.schramauto.com or call them at 1-800-292-1032

Posted on Mar 21, 2009

localwonder
  • 6784 Answers

SOURCE: How do I locazte/replace the air filter in my 2004 Buick Rainier

Hi. the air filter is in a cylindrical looking device that is connected to the intake throttle body, via plastic flex hose. it runs horizontal. you will have to un clip the plastic housing and extract the filter. i will post a picture below.


0415925.jpg



Posted on May 22, 2009

  • 630 Answers

SOURCE: I have a 2004 buick rainier with a sagging rear

The suspension levelors are vaucumn controlled, look for a leak in the vacumn lines and the levelors, sometimes to ease up your search you may use a spray solution of soapy water while the system is engaged to try to pin point the source of the leak.
Kinked, twisted, pinched or broken vacumn hoses are a straight forward sure sign of the problem repair/replace the defect and recheck your work to be sure it is repaired properly after the fix.

Posted on May 20, 2010

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The air ride rear suspension is not airing up on my 07 buick rainier. is there a sensor that could be bad?


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Air suspension compressor sounds bad and wont pump up the rear on a 2003 mercury grand marquis


What is odd is the compressor stopping after so short a time. It may be your only problem.

When you have a leak in the system, the compressor keeps running because the sensors do not signal for it to shut off. On your vehicle it is either being told to shut off prematurely or the compressor is triggering a circuit breaker.

There are ride height sensors on the rear. If the vehicle was lifted without turning off the Air ride, the sensors may have been stretched.

You can check for air leaks in the suspension bags, and air lines using a spray bottle of soapy water. There is also a Master dump valve that should be ahead of the Drivers front tire/radiator well area. It is not a concern unless there is no pressure in the system.

Finally, just as the engine can express diagnostic Codes, so can the suspension. You need a better scanner to do this function. It is the quickest way to find the problem.

Please rate my info.

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By not moving I assume you mean lifting and leveling? The good part is all the mechanisms required to make the pump run are working. The part you are having problems with is containing the air.

There should be a Master "dump" valve to allow the air to escape. Sometimes these solenoids freeze. There are also solenoids for each end or wheel to level the car. You have, of course air lines and suspension bags.

If any of these leak, the compressor can not keep up and will run continuously. You have several options. Depends on whether you can fix it yourself. Using a water spray bottle with soapy water, you can wet each air line and suspension bag while the compressor runs. The soapy water will bubble at the leak.

Or you can have a special scanner plugged into the diagnostic port for the suspension. It can "read" the sensors and indicate what is wrong.
Not all places have this type of machine. The Dealer, any GM brand Dealer, can attach this equipment and evaluate the system.

Some repair shops, body shops, may have bought these special scanners. You would have to call around to avoid going to a Dealer.

Since the system is leaking, you will not have to deal with all the pressure that operates these systems. But they can be dangerous and they do support the weight of the car possibly sliding off jacks if the system drops.

I hope my solution is helpful. You may find the parts aftermarket.

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Air compressor works...rear suspension low...just used air compressor to fill tire a few weeks ago...could this be related? We had never used it in over 8 years...


The air suspension has absolutely nothing to do with your tire pressures. If your rear suspension is low and you can hear the compressor running all the time, it is because you have a leak in your suspension system. You need to get it diagnosed and repaired as soon as possible. If you let it continue, it will burn-up your compressor, then it will be REALY EXPENSIVE to fix.

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1 Answer

I have a 2004 buick rainier with a sagging rear suspension self levelors not working?


The suspension levelors are vaucumn controlled, look for a leak in the vacumn lines and the levelors, sometimes to ease up your search you may use a spray solution of soapy water while the system is engaged to try to pin point the source of the leak.
Kinked, twisted, pinched or broken vacumn hoses are a straight forward sure sign of the problem repair/replace the defect and recheck your work to be sure it is repaired properly after the fix.

May 15, 2010 | 2004 Buick Rainier

1 Answer

Changed air suspension compressor on 1999 expedition.


make sure the air lines are properly attached spray with soapy water to check for leaks

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Check air suspension system problem


sounds like one of the rear air bags is leaking and if you get under car and spray with soapy water from spray bottle you can find leak and replace bag or line that is leaking. turning off the pump is not a good idea the rear bags will deflate and cause the car to ride too low and cause damage bottoming out. also if the leak is not fixed soon the air compressor will run too constantly and burn out/wear out and very expansive to replace.

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Suspension air compressor


If your compressor is running all the time, it is almost certain that you have a leak. It could be either in the lines going to the rear air bags, or the air bags themselves. Simplest way to find a leak, is to get a spray bottle with soapy water, make sure the suspension is aired up, and spray the lines starting from the compressor. Work all the way back to the bags, now when you get the bags nice and soapy then bounce the rear of the truck up and down. If their are any leaks the soapy water will bubble up showing you wear the leak it.
That is how i would start.

If its a bigger leak the rear air bags wont stay aired up, if its a small leak, then the air compressor will be running all the time to keep the truck aired up.

Remember, when you are driving, the compressor is constantly working to keep the rear bags at the proper height, even more so on rough roads.

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