...the CHECK COOLANT LEVEL light in my 97 seville sls on my diagnostic
board is on. I have checked coolant in the resevoir and it is full
or near full each time. Also, the temp gauge reads normal.
I noticed my manual says when this light is on to have the coolant
system serviced. Doesnt say to check the fluids. What is there to
servicing the coolant sytem?