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I have a 2004 SLS, What’s happening is my blower fan is staying on low speed and can’t adjust it…when I put it to high it stays at a low speed (doesn’t change) Do you think it could be a resistor

Thank you Chris

There is no blower motor resistor used for the blower motor speeds in your vehicle. The blower motor speed is controlled thru an instrument panel integration module and a blower motor control processor. So the problem is caused by one of these components malfunctioning.


Thank You