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How to access heater fan?

Tiny
JACKRB
  • MEMBER
  • 2004 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 45,000 MILES
I think something fell down into my heater fan and it makes a loud noise. I want to look and see; how do I access the fan?
Thursday, January 10th, 2008 AT 8:57 PM

14 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
You have to remove cover and then the holding screws
most likely it the blower motor N/G
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Friday, January 11th, 2008 AT 8:20 PM
Tiny
TERRANCECBELLEGARDE
  • MEMBER
  • 2 POSTS
  • 2003 PONTIAC GRAND AM
Recently a few days ago my heater/fan stopped blowing completely. When im idling the fan can be put on 5 and max heat and will not blow any air what so ever, but when I tried taking it on the highway it blows little to no warm at all. A quick answer to what it could be would be greatly appreciated :)
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Saturday, November 9th, 2024 AT 4:41 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Blower motor sounds like it has failed.

Start there

Roy
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Saturday, November 9th, 2024 AT 4:41 PM (Merged)
Tiny
TERRANCECBELLEGARDE
  • MEMBER
  • 2 POSTS
A friend of mine said it could be the blower motor resistor, could that be the issue? But thanks so much I will look into it.
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Saturday, November 9th, 2024 AT 4:41 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Could be but the blower drawing too much will cause the resistor to fail

Roy
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Saturday, November 9th, 2024 AT 4:41 PM (Merged)
Tiny
LANE1780
  • MEMBER
  • 1 POST
  • 2000 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 164,000 MILES
How do I know my hvac blower motor is going out? I replaced fuses and the relay.
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Saturday, November 9th, 2024 AT 4:41 PM (Merged)
Tiny
IMPALASS
  • MECHANIC
  • 3,112 POSTS
Hello â€

Not sure if you fixed this yet.

Do you not have any airflow coming out of the vents?

Best way to see if the motor is okay is to disconnect the electrical plug and check for voltage. I you have voltage to the plug then remove motor from car and put in vise and put 12v to plug to see if motor spins or if you have enough room put 12v to the motor plug still inside the car.
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Saturday, November 9th, 2024 AT 4:41 PM (Merged)
Tiny
MARI_VANT
  • MEMBER
  • 1 POST
  • 1999 PONTIAC GRAND AM
  • 263,000 MILES
Blower motor burnt out. May be an electrical short as it worked intermittently until it blew the fuse and then when we put new fuse in, the blower motor was caput.(Made a sound and then done) no air conditioning or heat air flow coming out other than the air coming through when on freeway.
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Saturday, November 9th, 2024 AT 4:47 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
The blower motor and fan are located in the lower right hand corner of the HVAC module.
Image (Click to make bigger)
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Saturday, November 9th, 2024 AT 4:47 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Over behind the glovebox
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Saturday, November 9th, 2024 AT 4:47 PM (Merged)
Tiny
DADACAPONE
  • MEMBER
  • 2 POSTS
  • 1999 PONTIAC GRAND AM
Air Conditioning problem
1999 Pontiac Grand Am 4 cyl Automatic

When I turn on the heat or air in car it will putter for a minute and then completely cut off. My car has 5 speeds of air. 1 and 2 have never turned the air on but 3, 4, and 5 have alway come on. Now, after the air/heat cuts off I have to wait a few minutes and then the air/heat will putter back on for 5 seconds and cut off again. I don't think it is the motor because the fan wouldn't put at all if it was the motor. I am thinking maybe resistor?
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Saturday, November 9th, 2024 AT 4:48 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome, all circuits go through the resistor assembly, (except) high blower speed. There is a blower relay in the underhood fuse box, You can unplug relay, use testlite, key on, hvac controls on, see how many hot terminals. I believe three hot. You need to check while problem is ongoing. The relay is wired after the resistor assembly. High speed uses different fuse than the lower speeds. When relay is energized only continuity for high speed circuit. When relay is not energized, continuity for lower speeds, no high speed.
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Saturday, November 9th, 2024 AT 4:48 PM (Merged)
Tiny
ROBERT HAYES
  • MEMBER
  • 1 POST
  • 1996 PONTIAC GRAND AM
Heater problem
1996 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic

HOW DO YOU CHANGE BLOWER MOTOR AND FAN
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Saturday, November 9th, 2024 AT 4:48 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
1996 Pontiac Grand AM V6-3100 3.1L VIN M SFI

With Air Conditioning

Blower Case Insulator "Cut" Diagram


https://www.2carpros.com/forum/automotive_pictures/12900_bmotorp_1.gif



REMOVE OR DISCONNECT
1.Negative battery cable.
2.Generator belt.
3.Generator, set aside.
4.Position engine wiring harness aside.
5.Blower motor electrical connection.
6.Partially cut blower case cover as indicated on cover.

CAUTION:
*Cutting completely around cover is not required.
*Cover thickness is approx. 2 mm (1/8 in.) . Make cut just through thickness of cover. Excessive depth of cut may damage cooling tube.

7.Swing cut out portion of cover down.
8.Blower motor cooling tube.
9.Blower motor retaining screws.
10.Blower motor assembly.

INSTALL OR CONNECT
1.Blower motor assembly.
2.Retaining Screws.
3.Blower motor cooling tube.
4.Blower motor cover using 3 retaining clips.
5.Reposition engine wiring harness.
6.Electrical connections.
7.Generator.
8.Generator belt.
9.Negative battery cable.

Without Air Conditioning:
Heater Blower Assembly


https://www.2carpros.com/forum/automotive_pictures/12900_bmotorp1_1.jpg



Blower Case Insulator "Cut" Diagram


https://www.2carpros.com/forum/automotive_pictures/12900_bmotorp_1.gif



REMOVE OR DISCONNECT
1.Negative battery cable.
2.Generator belt.
3.Generator, set aside.
4.Position engine wiring harness aside.
5.Blower motor electrical connection.
6.Partially cut blower case cover as indicated on cover.

CAUTION:
*Cutting completely around cover is not required.
*Cover thickness is approx. 2 mm (1/8 in.) . Make cut just through thickness of cover. Excessive depth of cut may damage cooling tube.

7.Swing cut out portion of cover down.
8.Blower motor cooling tube.
9.Blower motor retaining screws.
10.Blower motor assembly.

INSTALL OR CONNECT
1.Blower motor assembly.
2.Retaining Screws.
3.Blower motor cooling tube.
4.Blower motor cover using 3 retaining clips.
5.Reposition engine wiring harness.
6.Electrical connections.
7.Generator.
8.Generator belt.
9.Negative battery cable.
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Saturday, November 9th, 2024 AT 4:48 PM (Merged)

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