Problem with my OLDSMOBILE AURORA 2001

Engine size =
3.5L V6

GM tech = kk
question = air compressor for back shocks come on but still have shaking when i reach  
up to 50 mph... What do i need to do to correct this?







KK:
Not sure I understand the question.
The rear shock compressor would have nothing to do with a vibration at speed.
The rear compressor raises the rear of the car when there is a load in the back and the
height sensor sees the car is too low. If the compressor runs but does not raise the  
rear, then a leaking line, shock, or bad pump may be faulty.
A vibration at speed is usually caused by a tire out of balance, a bad tire, or a worn  
steering or suspension component, not the rear air suspension.
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