Will not blow air unless it is on 5. 1,2,3 and 4. No air comes out.
Aug 27, 2018 at 7:11 PM
Air conditioner not blowing air
2005 CHEVROLET TRAILBLAZER
MARY ROUSCHER
- MEMBER
- 1 POST
- FOLLOW
Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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Hi and thanks for using 2CarPros.com.
It sounds like the blower motor resister is bad. It is not an expensive part. Here are the directions for replacement of the component. It is a somewhat easy job other than having to work under the dash. The attached picture correlate with these directions.
_______________________________________
BLOWER MOTOR RESISTOR ASSEMBLY REPLACEMENT
REMOVAL PROCEDURE
1. Remove the right closeout/insulator panel.
2. Disconnect the blower motor resistor electrical connector (3).
3. Remove the blower motor resistor mounting screws (2).
4. Remove the blower motor resistor (1).
INSTALLATION PROCEDURE
1. Install the blower motor resistor (1).
2. Install the blower motor resistor mounting screws (2).
Tighten the screws to 1.9 N.m (17 lb in).
NOTE: Refer to Fastener Notice in Service Precautions.
3. Connect the blower motor resistor electrical connector (3).
4. Install the right closeout/insulator panel.
__________________________________________
Let me know if this helps or if you have other questions.
Take care,
Joe
It sounds like the blower motor resister is bad. It is not an expensive part. Here are the directions for replacement of the component. It is a somewhat easy job other than having to work under the dash. The attached picture correlate with these directions.
_______________________________________
BLOWER MOTOR RESISTOR ASSEMBLY REPLACEMENT
REMOVAL PROCEDURE
1. Remove the right closeout/insulator panel.
2. Disconnect the blower motor resistor electrical connector (3).
3. Remove the blower motor resistor mounting screws (2).
4. Remove the blower motor resistor (1).
INSTALLATION PROCEDURE
1. Install the blower motor resistor (1).
2. Install the blower motor resistor mounting screws (2).
Tighten the screws to 1.9 N.m (17 lb in).
NOTE: Refer to Fastener Notice in Service Precautions.
3. Connect the blower motor resistor electrical connector (3).
4. Install the right closeout/insulator panel.
__________________________________________
Let me know if this helps or if you have other questions.
Take care,
Joe
Image (Click to enlarge)
Aug 27, 2018 at 7:28 PM
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Just too add to it, Chevrolet had issues with the resistors getting too hot and melting the connector also. Chevrolet does sell the resistor harness as well and I would recommend you replace the resistor connector as well when changing out the resistor.
Aug 28, 2018 at 1:13 AM