My husband has a 2001 impala with about 80,000 miles on it. The heat will only work on the car when driven above 55 mph. When the car is in idle, the temperate gauge goes up to high, close to the red zone, then goes back down when you press on the gas. So it goes to the normal range while you're driving it. the minute you hit the brakes and get below 55 mph the heat starts blowing cold air. Do you know what this problem could be? Im just trying to get an idea so that i can get an estimate for my husband. Thanks!
RepairPal Certified shops can diagnose and repair your 2001 Chevrolet Impala. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
This is possibly a plugged heater core or a bad water pump. These vehicles can have a problem with the coolant in the cooling system and it can cause the issues you are having. Read more about it here: http://bit.ly/6U6lMJ
