The oil light keep telling me that i need oil when i already did a oil change what could it be

Sometimes they just fail to reset properly. Nothing to worry about. The youtube video shows the procedure to reset for a Chevy Truck, should be the same for your Chevy car.

Here's a website with explanation.
https://www.quora.com/What-does-it-mean-if-the-change-oil-light-is-lit-after-an-oil-change

No immediate danger. Have your oil changed, then reset the light. Your owners manual will tell you how. You NEED to change your oil to keep your car running.

Reset oil change light. some GM cars and trucks switch on ignition, do not start engine press gas peddle to the floor then release and switch ignition off. This procedure is in the owners manual.

The light will come on based on your mileage. I would suspect it is on telling you to replace the cam belt. Your owners manual will tell you exactly what maintenance is due at 98,000 miles.

Sounds like the low oil level light. If the oil is full, it sounds like the level sensor is bad.

you need to reset it. by having key turn off and pushing the trip reset button on the dash. then turn key on and the light should blink and go out after a while keep holding button tell it goes out

try replacing the oil sending unit first,
it tells the gauge on your dash how much pressure you have,if your light comes on it means you don't have oil pressure,so change the sending unit to see if this takes care of it,

I would hook up an OBD II code reader onto your OBD II port and it will tell you what is wrong with it. I doubt that a oil change will cure it but you never know. Good Luck!

Maybe its time for an oil change :)

You need to have oil pressure checked manually with oil pressure guage. There is a good possibility that the engine has excessive wear or a bad oil pump and oil pressure is really low. (It's like have a bad heart) That would definitely trigger oil light.If you have low pressure and its not taken care of immediately it will ruin the engine from lack of lubrication to vital parts. Good Luck contact me if you need more help.Thanks for using FIX YA