Cadillac: 1991 DeVille tail end low, front high, electronic level, metal arm

Question
Hi Tom.  On mycar, the back end looks like it's sitting on the tires (very low) while in the front, you can see all the tire (very high).  Makes the headlights pretty ineffective and it looks silly.
What controls this?

Answer
The most common cause is the Electronic level controller under the vehicle that looks like a 4" square black box with a multi-wire electrical cable attached to it as well as a small metal arm that attaches to the suspension at the rear of the vehicle near the rear wheel.