Questions & Answers for: 2004 gmc canyon heater fan

...2004 GMC Canyon 2.8L 4 cyl w/5speed. the 3 lowest settings on AC/Heater blower motor does not work. It only works on the highest setting. The Canyon has an inherint problem with the Fan Power cable ...

...in the heater air ducting in the blower fan airflow. Check for loose connections and open circuit resistors on the unit. If speed 4 works always, its unlikely to be the blower motor ground

2004 gmc canyon heater fan only works on the high position? There is a plug up under the glove box that loosens and you need to snug it up. The resistor block that control the lower fan speeds is bad.

2004 canyon idles funny at stop lights and mpg are down. when cold and stop at a light the heater or ac fan also slows down until you hit the gas? is this an oxygen sensor or a tune up problem i know ...

heater fan only works on high This is caused by a defective blower motor speed control resistor, the resisitor is located next to the blower motor.

...heater on and on max temp and max fan control. watch the temp gauge and make sure the temp goes to the normal operating area and does not overheat the engine. if temp is ok and you have heat that is ...