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Rear blower for heater is not working - 2000 Oldsmobile Silhouette

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This is one of them jobs where you need to get the multimeter out and then heck supply to the motor and go from their .working your way back from motor if no supply if a supply check the earth and if need be renew the motor

Posted on Feb 25, 2012

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2010 tahoe heater works in rear only


Heater or blower. If it is the blower, then replace the blower resistor. Beside the blower under the dash on the passenger side. If it is the heat, then the system needs cleaned out or replace the heater core.

Jan 29, 2015 | 2010 Chevrolet Tahoe

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How do I get the front heater to produce warm, hot heat from the blower? for 2003 kia sedona


First I would check your radiator fluid level, sometimes being low can have this effect. Usually the rear heaters sit at a lower level and so keep working. If that is fine, then you probably have an issue with the diversion door or controller that controls the hot/cold mixture.

Dec 03, 2014 | 2003 Kia Sedona

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Rear blower: only works on high when set on cold, won't work at all when set to heat


I would start with the rear blower motor resistor, the resistor is what controls the speed of the fan, the resistor is located in the rear heater box near the blower, you will need to remove the right rear side panel to access the heater box. start with that

Dec 07, 2012 | 2004 Honda Odyssey

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I have a 1998 Plymouth Grand Voyager. Last week, the rear blower stopped working and the brake lights no longer function. All other lights work. The front blower works just fine. All fuses are...


The rear blower and the brake lights might not be related troble. The rear blower has a ballast resistor that can fail and it's next to the blower motor in the rear heater housing. The blower motors are also known to go bad so wrapping on it with it turned on might( wake it up) and it'll start woring again as a poor connection shaken or the worn motors brushes shaken down where they make connection again. Then you say the rest of the lights work do you mean that the brake light bulbs come on with the hazard swich entergized? or do the rear lights just light yellow turn lights only? I'd check or even replace the brake light buld=bs before I'd do anything else.their are other things that don't work if the fuses were involved and the same goes for the heater rear blower as the front blower uses the same fuse.

Sep 23, 2011 | 1998 Plymouth Grand Voyager

2 Answers

I have a 2000 grand prix 3.8 with heater problems. i have changed the heater core, thermostat, resister, blower, the 2 relay switches and heater fan. there still is very little air coming thru.. any...


The blend door may not be working properly. It is actuated by a vacuum motor.

or the following part may be bad:

Blower Motor Control Module Removal & Installation To Remove:
  1. Remove the insulator from the right side of the instrument panel.
  2. Disconnect the connectors from the blower motor resistor and blower motor.
  3. Loosen the two forward screws and remove the rear screw of the resistor assembly.
  4. Remove the blower motor resistor assembly.
To Install:
Install the blower motor resistor assembly. Install the rear screw and tighten the forward screws. Connect the electrical connectors to the blower motor and resistor assembly. Install the insulator under the right side of the instrument panel.
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Jan 21, 2011 | 2000 Pontiac Grand Prix

1 Answer

Need to replace a front heat blower resistor on 2002 mdx, where is located???


moz-screenshot.pngHere's an excerpt from the 2002 Acura MDX 4WD 6cyl Repair guide for replacing what the reference manual calls the "control assembly" - its located under the console rear trim and may (or may not)
contain the blower resistor - my manual doesn't say - but this is the closest thing I could find for you. Every other blower resistor I've had to find was located close to the heater controls - and this
car seems to be no exception -- its heater controls are located in the console between the seats, rather than in the dash (as in Acura 2003-06 MDX models).

You may want to call your friendly Acura dealership ad speak to the parts department, to make sure where the blower resistor is located - or a visit to a dealership parts counter often (or
Advance Auto Parts is helpful too) ofen clarifies questions I have from Haynes manuals (the cheapest car repair guides).

All this assumes that you've correctly diagnosed your blower control problem -- as in "replace the blower resistor when the blower works only on the MAX/Highest setting."

-- begin excerpt from 2001-2 Acura 4wd 6cyl MDX Repair manual --
Control Assembly Removal & Installation

2001-02 Models
  1. Remove the console rear trim. Refer to the accompanying illustration.

    0996b43f80205cf3.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Exploded view of the console rear trim

  2. Remove the self-tapping screws and the rear heater-A/C control unit (A) from the console rear trim (B).

To install:
  1. Install the control unit in the reverse order of removal. After installation, operate the control unit controls to see whether it works properly.
  2. Run the self-diagnosis function to confirm that there are no problems in the system.

    0996b43f80205cf2.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Remove the self-tapping screws and the rear heater-A/C control unit (A) from the console rear trim (B)



  3. --- end excerpt from 2001-2 Acura 4WD MDX 6cyl Repair Manual ---

Jan 02, 2011 | 2002 Acura MDX

1 Answer

How to replace a heater core


Heater Core Removal & Installation Front To Remove:
  1. Make sure you have the anti-theft codes for the audio and the navigation system, and then write down the audio presets.
  2. Disconnect the negative cable from the battery.
  3. From under the hood, disconnect the heater valve cable from the heater valve. Turn the heater valve arm to the fully opened position.
  4. When the engine is cool, drain the engine coolant from the radiator.
  5. Disconnect the inlet heater hose and the outlet heater hose from the heater core.
  6. Remove the mounting nut from the heater unit. Take care not to damage or bend the fuel lines, the brake lines, and related parts.
  7. Remove the dashboard.
  8. Remove the evaporator.
  9. Remove the mounting bolts and remove the heater unit. Front heater unit honda-10-00-4128.gif

  10. Remove the self-tapping screws and the clamp.
  11. Carefully pull out the heater core so you don't bend the inlet and outlet pipes.
Front heater core honda-10-00-4129.gif

To Install:
  1. Using care, install the heater core to the heater unit and secure.
  2. Using care, install the heater unit and tighten mounting nuts and bolts to 7 ft-lb (10 Nm).
  3. Install the evaporator.
  4. Install the dashboard.
  5. Connect the inlet heater hose and the outlet heater hose to the heater core.
  6. Connect the heater valve cable to the heater valve.
  7. Refill the cooling system with engine coolant.
  8. Adjust the heater valve cable.
  9. Make sure that there is no coolant leakage.
  10. Make sure that there is no air leakage.
  11. Connect the negative battery cable.
  12. Perform the power window control unit resetting procedure.
  13. Enter the anti-theft codes for the audio and the navigation system, and then enter the audio presets.
Rear To Remove:
NOTE: The rear blower motor, the rear heater core, the blower screen, the rear blower resistor (heating/air conditioning system) and the rear power transistor (climate control system), the rear air mix control motor (climate control system) , the rear mode control motor and the rear expansion valve can be replaced without removing the rear heater-A/C unit.
  1. Remove the self-tapping screws and the clamp, and then remove the bolts and the rear evaporator lines with the rear expansion valve. If necessary, remove the rear expansion valve. Use a second wrench to hold the other fitting on the valve so the rear evaporator lines won't twist. Leave the first fitting loosely connected so you can use it to hold the valve while you loosen the second fitting.
  2. Remove the rear heater hoses.
  3. If necessary, remove the rear blower motor, the rear heater core, the blower screen, the rear blower resistor (heating/air conditioning system), the rear power transistor (climate control system), the rear air mix control motor and the rear mode control motor.
  4. Remove the self-tapping screws and the lower housing.
  5. Remove the self-tapping screws, and carefully separate the left upper housing from the right upper housing. Remove the rear heater core.
Rear evaporator assembly honda-10-00-4116.gif

To Install:
  1. Replace the rear heater core.
  2. Attach the heater hoses.
  3. Make sure no air is leaking from the left upper housing and the right upper housing fitting and from the upper housings and the lower housing fitting.
  4. Before reassembly, make sure that the rear air mix control linkage and door move smoothly without binding.
  5. Before reassembly, make sure that the rear mode control linkage and door move smoothly without binding.
  6. Reassemble the housing.
  7. After reassembly, make sure the rear air mix control motor runs smoothly.
  8. After reassembly, make sure the rear mode control motor runs smoothly.
  9. Refill the cooling system and make sure that there is no coolant leakage.
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Oct 16, 2010 | 2005 Honda Pilot

2 Answers

The front heater/air conditioner blower stopped


First check the voltage at the front blower moter. If it has voltage then it may just need a new motor.

May 17, 2010 | 2001 Dodge Grand Caravan

1 Answer

Heater fan on 2002 Yukon does not operate in front, only rear.


The front blower motor is controlled by the blower resistor module.This is usually the problem with the front blower not working.I looked up the schecmatics and I don`t see separate fuses for the front and rear.But the fuse for the front blower is in the under hood fuse block.If this is good then The problem is probably the resistor module.It is next to the blower motor.The connector from the resistor connects to the blower motor.If you want to confirm this you can check for power and ground at the blower motor connector when you activating the blower switch on.This can be done with a test light.Make sure you have power going into the resistor module also.If you have power going in and no power at the blower motor then replace the resistor.Hope this helps.Good luck.

Dec 28, 2009 | 2002 GMC Sierra C/K1500

1 Answer

2003 Dodge Durango front heater blower problem


The front and rear are two different systems-if the rear works or doesn't -your front still should. Your problem is the blower motor resistor and yes you can do this yourself. Remove the glovebox door and the resistor will be fastened to the heater/ac box with 2 screws and a harness plugged into it. It is a dealer only part, but they are under $30. Hope this helps you. Will probably take about 10mins to change,

Dec 06, 2009 | 2003 Dodge Durango

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