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2012 NP200 8valve interior fan only working on High speed. How do I fix it ?

Repair np200 interior fan

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 34 Answers

SOURCE: i have a problem with my fan on my 1999 sunfire

This is sometimes caused by the blower motor resistor. It is usually an inexpensive repair. The resistor mounts in the heater box, and depending on the location of the heater box, is fairly easy to change.

Posted on Sep 22, 2009

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Molson02536
  • 3854 Answers

SOURCE: blower motor for interior fan only blows on high

The blower resistor pack needs to be replaced, it's common for the blower speed resistors to burn up and will need to be replaced. It's easier to replace with the glove box out of the way. gmparts direct has the harness and resistor as a package deal. Their part number is PK15218254.

GM Parts list:

Resistor - p/n 15218254 $8.59*

Connector - p/n 15306069 $30.70*

Wiring harness - p/n 89019124 $20 *

You don't need to remove the glove box, just lay on the floorboard and look up under the dash. There's a 4-wire harness plugged into the resistor assembly (white plastic), in the bottom of the black heater blower shroud. Unplug the harness, remove two small screws, and pull down to remove the resistor assembly.

Good luck and merry xmass.

Posted on Dec 15, 2009

egadgetguy
  • 258 Answers

SOURCE: 1996 Ranger 2wd interior fan blows hi spd only

Possible solution is to check the fan speed switch. These go bad and won't change the speed/ or function in the lower speeds.

Posted on Dec 29, 2009

  • 466 Answers

SOURCE: interior fan speed works on high but in no other

HI, YOU NEED A RESISTOR BLOCK. THANKS MOTOR62500

Posted on Dec 21, 2010

czaa
  • 4536 Answers

SOURCE: How do I fix heater fan to operate at low and medium speeds. It only works on High.

Cause its worn out. The switch is burnt from motor drawing to much juice. When u change switch..chng motor

Posted on Jan 13, 2016

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My car 2008 Chevy Uplander warning light came on stating A/C shut off for engine protection. My question exactly as 1posted 2011. Gauge not Reading. Fan running continuously. Doesn't seem hot.


What gauge not reading , Temperature ? you posted back in 2011 ? You did feel you should take it to the repair shop ? You need to take this to a ASE certified repair facility ! This is a complex electronically controlled cooling system , Three relay's controlled by the ECM -engine control module turn the fans on in two different speeds ! There could be DTC'S diagnostic trouble codes stored in the ECM, HVAC module , BCM !
Circuit/System Description
The engine control module (ECM) commands the fans ON in high speed or low speed. In low speed, the fans are configured in series. In high speed, the fans are configured in parallel.
In low speed operation, the ECM applies ground to the coil side of the low speed fan relay, which is the Fan 1 Relay. Voltage is applied directly to the left cooling fan through the switch side of the low speed fan relay. The right fan is connected in series to the left fan through the de-energized Series/Parallel relay, which is Fan 2 Relay, so that both fans operate at low speed.
In high speed operation, the ECM applies a ground to the coil side of the low speed fan relay, the Series/Parallel relay, and the high speed fan relay, which is the Fan 3 Relay. Voltage is applied directly to the right cooling fan through the switch side of the high speed fan relay. The left cooling fan obtains voltage through the low speed fan relay and ground through the Series/Parallel relay.
When the ECM is commanding a fan relay ON, the voltage of the control circuit should be low, near 0 volts. When the ECM is commanding a fan relay OFF, the voltage of the control circuit should be high, near battery voltage.
One of the relays could be stuck on ! An for the gauge you have to have it removed an fixed , there is a stepper motor behind the gauge needle an they go bad ! Or replace the instrument cluster !

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-No body remember every thing. Look in its repair manual.
-A good mechanic always follow its spec in the repair manual. Not just guessing.

Good Luck

Mai

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Fan (blower for interior) only works on high setting all other settings basically turns the fan off. Air conditioning still works. There is not air flow at all on the settings (other than high) when the...


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It is located in the air box behind the glovebox on the interior of the car passenger side

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