Why My heat wont get real hot
Mine won't either, same kind of car. I am thinking it might be air in the cooling system. Will have to bleed the air out and see what happens.
If the engine temperature won't get up to half way then you're thermostat could be stuck open.
Looking for a Used Seville in your area?
CarGurus has 311 nationwide Seville listings and the tools to find you a great deal.
Search Cadillac Seville Questions
Cadillac Seville Experts