Heater only works on high on Buick Century

Problem Description and Possible Solution

When the heater only works on high, the most common problem is a blower motor resistor. The correct repair is to replace it with a new resistor.

Problem Data
RepairPal Verified
Average mileage: 114,026 (30,000–200,000)
5 model years affected: 1997, 1998, 1999, 2000, more2002
19 people reported this problem
Viewing 1 - 12 of 12 comments
blower motor works on high only the resistor has been changed with no help, the temp. control panel has also been changed with no help what is next.
My heater only worked on high before, and when I would turn it on it would make a horrible screeching sound. The thermostat turned out to be bad, once this was replaced, it seems to work a lot better.