1995 Pontiac Grand Prix Owner's Manual - Page 76

Engine Coolant Heater (Option) In verycold weather, 0 O F (- 18 O C) or colder, the engine coolant heater can help. You'll get easier starting and better fuel economy during engine warm-up. Usually, in the coolant heater should be plugged a minimum of four hours priorto starting your vehicle. NOTICE: After you've used the coolant heater, be to sure store the cord as it was before to keep it away from moving engine parts. If you don't, it could be damaged. How long should youkeep the coolant heater plugged in? Theanswer depends on the weather, the kind of oil you have, and some other things. Instead of trying to list everything here, we ask that youcontact your Pontiac dealer in the area where you'll be parking your vehicle. The dealer can give you the best advice for that particular area. To use the coolant heater: 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. 3. Plug it into a normal, grounded 110-volt outlet. 2-15