2003 cadillac seville heater blower

Asked by CaddyPain Oct 23, 2020 at 02:38 PM about the 2003 Cadillac Seville SLS FWD

Question type: Maintenance & Repair

Having problems with the heater blower not turning on. I
have replaced the blower motor and the fuses. Still wont
blow out air in any position.

1 Answer
26,245

taver91 answered 3 years ago

Replace the resistor board that feeds the blower motor. When you change the fan speed, it adds or reduces resistance to the inbound power line of the motor. This make the fan speed go up (lower resistance) or down (higher resistance). It is common to have a failure of this small part. It is typically mounted to the fan housing and accessible from under the hood.

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