warning light

Hey to all, I have a 96 chevy cavalier and on the left side of the dash there are some gauges or warning lights and one of them is on,I'll try to describe it and hope someone knows what I'm talking about.It's been awhile since I've been on this site(dont ask,wont tell).Ok the warning light has some symbol for some kind of fluid on the very bottom with an arrow pointing toward the liguid and some type of cap or top.I can maybe take a pic tommorow,but was hoping I wouldnt have to, thanks to all

I'm pretty sure that's a low coolant light. See if there is a sensor sticking out of the radiator somewhere.

I put coolant in the resevoir,my normal heat range is closer to the hot side than cooling is something sticking?thermostat going bad?because sometimes in winter I have no heat but the car never overheats,thanks for the reply