2003 GMC Envoy Blower

2003 GMC ENVOY
65,100 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
QUASAR40
  • MEMBER
  • 1 POST
What causes teh blower to stay on after the the vechicle is turned off?
Jan 21, 2009 at 7:31 PM
Advertisement
Avatar
BLUELIGHTNIN6
  • CERTIFIED EXPERT
  • 16,542 POSTS
Suspect faulty blower motor resistor. The blower motor resistor is used to regulate the motors speed. When you select a higher fan speed the blower motor resistor will provide less resistance to the blower motor allowing it to spin faster thus moving more air. If the resistor pack has completely failed, it can no longer resist the currents passing through the wiring, which will cause the blower motor to continue to run.



Thanks for using 2CarPros.com!
Jan 21, 2009 at 9:28 PM