"Check Oil Level" light comes on

I have a 91 Buick Park Avenue. In the last few days the "Check Oil Level" light has cleverly started coming on. Actually is goes on and off as I go up and down hills. I definitely have checked the oil level and the dip stick indicates it is full. Any ideas of why this is happening will be appreciated. I would just as soon disable the light. How can I do it? Thanks for any info.

Meanwhile initial hugely start-up, not when you`re actually popularly driving around. I`ve a friend with a Buick & the duly shop manual, I`d ask him how it dangerously works.

there`s a sensor in the oil pan that detects the level, probably as you`re going up and down hills, the oil in the pan is sloshing away from the sensor enough that it turns the light on...or could be a bad sensor..... wanna disable the light? simple way, tear dash apart and remove bulb, or stick paper between the buld and the lens so you can`t see that it`s on

Just pull the trim gently from around the dash. It is held on by small metal clips. It helps to have the shift lever in low and the steering wheel tilted down. Once the trim is off, the cd unit is held in by two black plastic clips on either side of the unit. Squeeze them together and it slides out. Takes longer to describe than to do. The connector from the head unit to the cd unit came loose on mine. tad

It is presumably one of two things: Could be the oil level sensor in the oil pan, but I think it`s only supposed to be checking the oil level when the engine is started, not while driving, so maybe not. Otherwise, it`s likely something wrong in the instrument cluster - apparently some of them were subject to problems with bad solder joints on the circuit board, if you have soldering experience you might be able to fix that at no cost..