1997 Buick Skylark EGT Light on Dash

a check engine light comes on because the computer senses a change in temp or pressure or etc. an electrical problem a sensor usually when this is deteced the check engine light comes on

So what is the EGT trouble light on the dash telling me? What is the EGT?

exhaust gas temp light, this means that a sensor is not reading the right temp which could mean the sensor is bad

where is the EGT sensor found?

I am sorry, it is the ETS light that I need info on

that is the engine temp sensor do you also need to know where this located?

Yes........Thank You

Under hood, driver side, upper engine area, mounted in end of cylinder head