How do you check the operation of 1997 Buick Riviera suspension compressor?

To check the operation of the suspension compressor in a 1997 Buick Riviera, first, listen for any unusual noises when the ignition is turned on; the compressor should activate briefly. Next, inspect the compressor visually for any signs of leaks or damage. You can also test the compressor by disconnecting the air lines and checking for air pressure when it operates. If the compressor does not engage or produce pressure, it may need further diagnosis or replacement.