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Blower wont engage for heat - 1992 Cadillac DeVille

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Check the fuse first,,,if good ,disconnect the blower motor connector and check for power and ground there on connector,if have both power and ground you most likely got a bad blower motor,,if you dont got power and ground you might have a bad wire or bad hvac control head

Posted on Oct 07, 2009

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1 Answer

Rear vent controls not working


The rear blower motor switch and the rear floor console switch bezel are serviced only as an assembly.

  1. Disconnect and isolate the negative battery cable.
  2. Remove the rear floor console.
Rear Blower Motor Switch

  1. Remove the rear floor console switch bezel by releasing the retaining tab located at each end of the switch bezel and pushing it out through the front surface of the console.
  2. Disconnect the wire harness connectors from the rear blower motor switch and the rear heated seat switches.
  3. Remove the rear heated seat switches from the rear floor console switch bezel by gently prying the switches free from the back of the switch bezel.
INSTALLATION
  1. Install the rear heated seat switches into the back of the rear floor console switch bezel. Make sure that the switch retaining tabs are fully engaged to the bezel.
  2. Connect the wire harness connectors to the rear blower motor switch and the rear heated seat switches.
  3. Install the rear floor console switch bezel into the rear floor console by pushing it in through the front surface of the console. Make sure that the bezel retaining tabs are fully engaged to the console.
  4. Install the rear floor console.
  5. Reconnect the negative battery cable.

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1 Answer

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I had a 2003 caddy dts same issue the blower motor has probably gone bad u can order them online. What u can also try is kicking under the passenger side glove box area that's where the blower is located sometimes they get stuck. Try kicking or tapping under there and see if it pops on. I did this with my car

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SECTION 412-02: Heating and Ventilation 1999 Cougar Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 02/8/2001 Blower Motor Removal
  1. Remove the footwell upper trim panel (passenger side).
    • Remove the pushpins.
    m3401035.jpg
  1. Remove the blower motor.
    1. Disconnect the electrical connector.
    1. Lift the securing tab, turn the motor approximately 30 degrees counter-clockwise and remove the motor.
    m3401077.jpg
Installation
  1. NOTE: Engage the securing tab for the blower motor.

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Heat & AC blower (fan) does not come on. Just


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For some reason the a/c and heating blower fan wont kick on


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2002 nissan altima a/c compressor wont engage & wippers wont work


it could be a conscience that the wipers stopped too, because elctricly these are not sharing any resources.
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1999 cadillac deville air wont work


There's a blower motor (fan) under the hood and up against the firewall near the center of the car that takes some work to remove. It has gone out in the last 2 of my 4 Cadillacs. Turns out if you're not real careful with the positioning of the spark plug wires they will brush up against it, and if one of them gets cracked or brittle it will "arc" and short out the blower motor. The a/c compressor should still come on (you'll hear a click when it engages) but you won't get any air blowing into the cabin, hot or cold.

The part was like $200 stock (year 2000 prices) and it took about an hour to remove it. My Caddy at that time had this damn strut bar going across the engine bay which we eventually removed to get to the blower motor.

Dec 18, 2008 | 1999 Cadillac DeVille

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