Question about 2005 Buick Rainier

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Electrical diagram 2005 buick rainer

Blower motor

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

StormStrikes
  • 104 Answers

SOURCE: blower motor won't run on 2005 buick lesabre

There are two fuses on that circuit I believe. There is one labeled HVAC CTRL and HVAC HI, both should be located in the fuse block inside the car. Check both of those and make sure they are good.

As well, there is also a blower motor resistor that is located in the blower motor housing. Its very common for these to go bad and can cause issues with the motor not operating as well.

Posted on Jan 27, 2009

  • 1608 Answers

SOURCE: Blower motor will not shut off. 2005 Buick LaCrosse

There is a bulletin for this fix.The bulletin number is 05-01-39-001A.This pertains to the blower motor staying on after key is shut off.What you will have to do is replace the blower motor resistor module and install a capacitor in the wiring.Part number is 25073556 for the capacitor.The blower motor is on the right side under the dash.Just remove the insulator panel and you should be able to see it if you look up into the dash.Or turn it on and listen for the blower motor.Disconnect the connector to the blower motor control module.Find cavity a and c.Cavity a is negative and cavity c is positive.C is red and A is black.Splice the positive lead of the capacitor to the red wire and the negative to the black wire.You should use splice sleeves and solder the wire on.Hope this helps.Good luck.

Posted on Dec 19, 2009

ZJLimited
  • 17970 Answers

SOURCE: I need a diagram for

The blower motor is a variable speed motor. The higher the voltage applied to the motor, the faster the speed. Depending on the HVAC (Heater Ventilation Air Conditioning) option installed in the vehicle, blower speed control could be through a set of resistors or through a solid-state blower motor control module.Battery voltage to the blower motor is supplied by the heater & A/C control by way of the blower resistor (or blower motor control module). At low and medium speeds, the voltage is stepped down by the blower motor resistors. At high speed, the blower motor relay is energized, removing the blower motor resistors from the circuit. Battery voltage is then applied directly to the blower motor through the relay. The motor will then run at maximum speed.

Several types of HVAC systems were available on these vehicles, from manual to fully automatic electronic control. The blower motor speed can be adjusted manually by pushing the fan switch up or down or automatically by placing the heater & A/C control in the AUTO mode.

In general, this system is reliable. Because so many of the control operations are electronic, special diagnostic equipment really should be used for system diagnostics and check-out. An authorized technician using a scan tool can most quickly locate HVAC problems.

68f54ca.jpg

Fig. Typical behind-the-instrument panel view of HVAC related components. Depending on the HVAC option, not all components are used on all vehicles

05dedba.jpg

Fig. Typical HVAC operation schematic
An inoperative blower motor could be caused by the following:

Blown fuse(s). The fuse should be replaced. There may be both a LOW BLOWER and HIGH BLOWER fuse. Some models may also call it the HVAC fuse. Even the RADIO fuse is used in some applications. Check them all. If a fuse is blown there may be a short to ground in one of the power supply circuits. Open Circuit. Check the circuit between the ignition switch and the blower motor, and the blower motor ground circuit. Repair as necessary. Faulty blower switch. A faulty blower switch should be replaced. Most heater blower circuits also include a blower motor relay (look in the underdash convenience center), as well as a blow motor resistor. These items should be checked especially if the blower runs in one or two speeds, but not all speeds selected.

The blower motor resistor is located on the back of the blower motor housing under the dash on the passenger side. It can be difficult to get at, but it is doable. Be ready with the ibuprofen the next day for your sore back.
Remove the cover panel from beneath the dash on the passenger side.
Unplug the power 'ribbon' wires leading to the resitor.
Unplug the wires that lead from the resitor to the blower motor housing. There are usually two, one black and one purple that share the same plug.
Remove the short hose that leads from the blower motor housing to the ventilation system ducts.
Remove the blower motor by removing the three hex screws that hold it in place.
Remove the resistor by removing the three hex screws that hold it in place. The resistor is right against the firewall so two of the screws are very difficult to reach. A slender flexible socket extension will make the job easier.
Attach the new resistor in place using the same hex screws. Only 1 or 2 of the original three are needed (the part is very light) if you do not feel like fighting with the ones next to the firewall.
Reatach the blower motor and reconnect the hose.
Plug the power cable wires back into the resitor and the wire from the resistor back into the blower motor.

Instead of hex screws mine were held in with 7/32 bolts. It was difficult, but easier than I had anticipated. I replaced two of the three bolts holding the resistor. The blower motor came with instructions saying that the plugs may have to be cut off of the resistor and the blower motor, then spliced together... I had to do this on mine.
I got everything back together and now the fan works on four of the five levels. It does not work on high.

I found on another site that said "high" uses a different circuit, with a separate fuse. I found the fuse panel on the passenger side of the dash when the door is open. The cover for the panel has all of the fuses mapped out, so it was easy to spot the 25 amp "Blower High Speed" fuse. I was very impressed to find the panel contained a fuse puller and replacement fuses. Mine was blown, I replaced it, and all is good with the world.

Hope helps.

Posted on Sep 08, 2010

ryanlutton
  • 1110 Answers

SOURCE: headlights of my 2005 buick rainer not working

Switch relay #45 with relay #46 next time your low beams go out, do you have lights again? If so, get a new relay.

Posted on Dec 10, 2010

skychief2001
  • 21873 Answers

SOURCE: 2003 buick rendezvous blower motor has 12 volts but isnt working even with new blower motor

The motor has to have voltage and a good ground.
Could be a faulty ground connection.

Posted on Oct 02, 2012

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I can't diagnose unless you can do some testing? This is part of diagram for automatic hvac. At the blower motor, terminal B is voltage, terminal A is ground. Use a test light, check voltage and ground with hvac on, Have to check when problem is ongoing. If good voltage and ground with no blower action, suspect the blower motor is faulty. Of course, if your missing voltage or ground, have to track that circuit. Faulty blower motors may run intermittently. When problem is ongoing, hvac on, you can try tapping blower motor with screwdriver handle see if it starts running, if it does, I suspect the blower motor has a problem. Check hvac trouble codes, where applicable.
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1 Answer

Blower motor replacement


Very easy!!!

Here ya go!!!

Removal & Installation
  1. Remove the right side sound insulator in the passenger compartment.
  2. Disconnect the electrical connector from the blower motor.
  3. Disconnect the blower ventilation tube from the module.
  4. Remove the blower motor screws.
  5. Remove the blower motor from the housing.
  6. Install the blower motor into the housing.
To install:
  1. Install the blower motor screws and tighten to 15 inch lbs. (1.5 Nm).
  2. Install the blower ventilation tube to the module.
  3. Connect the blower motor electrical connector.
  4. Install the right side sound insulator.

Jun 03, 2010 | 2004 Buick LeSabre

1 Answer

HVAC Blower Motor on my 2005 LaSabre is not running.


the blower motor is under the glove box,turn the key on then the blower switch to high and check with test light.if no power check the blower motor resistor.

Dec 16, 2009 | 2005 Buick LeSabre

1 Answer

Blower motor won't run on 2005 buick lesabre


There are two fuses on that circuit I believe. There is one labeled HVAC CTRL and HVAC HI, both should be located in the fuse block inside the car. Check both of those and make sure they are good.

As well, there is also a blower motor resistor that is located in the blower motor housing. Its very common for these to go bad and can cause issues with the motor not operating as well.

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