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2004 Buick Rainier Questions

Get answers to questions about your 2004 Buick Rainier at RepairPal. Find solutions, diagnose problems and get back on the road.

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126
questions

Bags don't leak and pump works so it seems it has to be the sensors. Am I correct?

Rear end is jacked up as high as it will go and rides terribly.

Checked fuses, all ok. What else can I check?

Speedometer does not register how fast you are going or if you are going maybe 45 mph it will say you are going 95-100. Also fuel gauge goes up and down when you are driving. The passenger side mirror will not stay set

All vents blow air into the cabin with exception of the ones actually on dash facing you. Even the ones facing the door by Windows work. Any ideas on issue or location of where to look??

Sometimes the sound works, could it be a loose connection? Is there a wire scamatic available?

All lights come on in dash.

Sometimes rear air suspension goes down overnight and will fill back up when vehicle is started. Compressor and air bags work properly and can find no leaks.

on occasion my 2004 ranier rear end sags to the ground.......usually the air compressor will blow up the suspension bags when ignition switch is turned on, and it will be fine for 2-3 days, then will happen again. I do not believe the air bags are leaking, since they stay inflated for days after the problem, and the air compressor is functioning as well. Is there a valve between the air compressor and air bags that coule be malfunctioning? as expensive as repairs are for this, I want to fix the right thing/ please advise.