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Heater in a 01'chevy impala doesn't want to turn on I changed the heater resistor and blower motor still not the problem

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  • Cars & Trucks Master
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Only three possibilities left. The fuse on the passenger side(30amp), the controller, or a broken wire.

Posted on Nov 16, 2014

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I have a 2004 Impala. when I turned off the ignition myheater blower stayed on what can i do tofix it cheap?


More than likely the resistor for the heater motor is causing the problem
it is located behind the heater motor under the dash on the passengers side. If the heater motor is making noises it may be drawing to much and caused the resistor problem.

Mar 04, 2013 | 2004 Chevrolet Impala

1 Answer

The heater fan won't stop, even if i turn off the key the fan still turn, unable to control it, it only turn at one speed (not the fastest one), i check the resistor it look like there's a short in it, the...


Your impala doesn't have a resistor , it has a blower motor control processor and it doesn't work the way you think it does
Chevy Trailblazer EXT Blower Motor Won Turn Off
Blower Motor Control Processor
The blower motor control processor is an interface between the HVAC control module and the blower motor. The blower motor speed control, battery positive voltage and ground circuits enable the control processor to operate. The HVAC control module provides a PWM signal to the control processor in order to command the blower motor speed. The processor supplies 12 volts to the blower motor through the blower motor voltage supply circuit. The control processor uses the blower motor ground as a low side control to adjust the blower motor speed.

HVAC Blower Motor Circuit

May 27, 2017 | Chevrolet Impala Cars & Trucks

1 Answer

My 2000 chevy impala heater fan control doesen't work at all. everthing works,except when you turn the control on any setting the blower motor won't come on/? no blowen fuse.


the resistor to the blower motor is bad or the motor itself, the resistor should be right next to the blower fan a heavy gauge wire plugs into it, or it might even just be the wire, it is common for them to melt

Oct 21, 2010 | 2000 Chevrolet Impala

1 Answer

Fuse diagram for a 98' E-150 van specifically for heater fan


owner manual will tell you fuse layout. If you have only high speed, you have a bad resister. 4 wires.

Resistor —Heater Blower Motor Switch Removal
  1. Remove the battery (10655) ; refer to Section 414-01 .
  1. Remove the battery tray.
    1. Remove the screws.
    1. Remove the battery tray.
  1. Disconnect the heater blower motor switch resistor connector.
  1. Remove the heater blower motor switch resistor (18591).
    1. Remove the two screws.
    1. Remove the heater blower motor switch resistor.
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Feb 26, 2010 | 1998 Ford Econoline

2 Answers

Heater fan switch only works on high


could be the heater/ac controller head. This is the buttons and switches that you use or you have a bad heater blower. Check fuses and then the wire to the heater blower motor under the hood on the passenger side. Hope this helps

Dec 06, 2009 | 2002 Chevrolet Impala

1 Answer

2000 chevy impala heater blower only works on position 5, is it the switch or blower motor


blower motor resistor sounds like needs replaced very common on gm cars

Nov 04, 2009 | 2000 Chevrolet Impala

2 Answers

2000 chevy impala 3.4 6 cyl ac blower fan wont turn off when in off postion and engine is off and key in my pocket please help


i just didf this last week
there is a part called (by most)
the fan/tempertire control module, it is located in the heater housing...where the air flows.....and a wire is connected to it from the blower motor and another wire exits the part.. chang this part...it is costly but autozone has the best price around 125$

Jun 28, 2009 | 2000 Chevrolet Impala

1 Answer

No heat or air blowing on my 2005 Chevy Impala


As new as your vehicle is I doubt the motor is bad. I would suggest that you change the blower motor resistor first.They are relatively inexpensive and usually the problem on newer cars.

Dec 19, 2008 | 2005 Chevrolet Impala

1 Answer

2006 Chevy Impala - Heater recently worked on by garage and "control unit" replaced. Now heater motor runs on high at all times irregardless of fan speed control setting and whtehr ignition switch os...


the blower motor resistor is damaged probably in the process of removing the heater core replace the blower motor resistor, and please dont forget to rate me!!

Dec 02, 2008 | 2005 Chevrolet Impala

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