My 99 Seville STS is overheating badly?

I own a 99 STS Seville and I replaced my waterpump, belt pulley and thermostat twice. Car was still overheating. I added 2 quarts of oil about a week ago as I was low and today Low oil pressure indicator came on and I need to add about 3 or 4, could low oil cause overheating to my car? Hence if I have an oil leak... show more I own a 99 STS Seville and I replaced my waterpump, belt pulley and thermostat twice. Car was still overheating. I added 2 quarts of oil about a week ago as I was low and today Low oil pressure indicator came on and I need to add about 3 or 4, could low oil cause overheating to my car? Hence if I have an oil leak could this be
The cause? Head gasket Is ok, don't
Know what else it could be?
4 answers 4