Cadillac Repair: 91 seville 4.9, change engine oil, computer command

Question
The driver information center is showing change engine oil, how do I reset this?  What is the CCR?  Engine compartment (under the hood) light doesn't work, where is the switch for this light? Thank You.

Answer
To reset oil light = Simultaneously push and hold the ENG-DATA and RANGE buttons until you see OIL LIFE INDEX 100'. May have to hold buttons for several seconds.

CCR = Computer Command Ride (your suspension system).

Turn ON the headlights and see if the underhood light illuminates.