How do I remove and install the front and rear heater controls?

To remove and install the front A/C switch, start by disconnecting the cable from the negative terminal of the battery. Then, remove the console and the accessory trim plate. Next, remove the control assembly retaining screws and depress the tabs to pull the unit from the dash. Use a small screwdriver to release the clips and disconnect the electrical connections and control cables if necessary.

Genuine Chevrolet Trailblazer A/C Switch

Air Conditioning Switch

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29 A/C Switches found

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Chevrolet Trailblazer Heater & Air Conditioner Control Assembly (W/ Amplitude Modulation/Frequency Modulation Stere
Part Number: 15250212
$94.73 MSRP: $151.56
You Save: $56.83 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Control Assembly, Heater & A/C (W/ Amplitude Modulation/Frequency Modulation Stere; Blower Motor Switch, Dash Control Unit
- Replaces: 15166894
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2008 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Heater & Air Conditioner Control Temperature Knob
Part Number: 9369572
$19.75 MSRP: $39.84
You Save: $20.09 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Knob,Heater & A/C Control Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Heater & Air Conditioner Control Assembly (W/Amplitude Modulation/Frequency Modulation Stereo Radio)
Part Number: 15159249
$108.89 MSRP: $370.34
You Save: $261.45 (71%)
ADD TO CART
Product Specifications
- Other Name: Control,Heater & A/C(W/Amplitude Modulation/Frequency Modulation Stereo Radio)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2003 Chevrolet Trailblazer | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L
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Chevrolet Trailblazer Heater & Air Conditioner Control Assembly
Part Number: 15845094
$283.29 MSRP: $511.26
You Save: $227.97 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control,Heater & A/C
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Heater & Air Conditioner Control Assembly
Part Number: 21999163
$324.85 MSRP: $586.82
You Save: $261.97 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Assembly, Heater & A/C ; Control, A/C Instrument Panel; Dash Control Unit, Heater Control
- Replaces: 15085358, 15077479, 15079112, 15195380
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L
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Chevrolet Trailblazer Control Assembly, Htr & A/C User Interface *Jet Black
Part Number: 42732421
$89.03 MSRP: $159.69
You Save: $70.66 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Dash Control Unit, Heater Control
- Replaced by: 42755151
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Trailblazer | 4 DOOR EXT | 3 Cyl 1.2L, 3 Cyl 1.3L
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Chevrolet Trailblazer Control Assembly, Htr & A/C Rem
Part Number: 84692729
$46.45 MSRP: $83.33
You Save: $36.88 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Control Module, Controller
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Trailblazer | 4 DOOR EXT | 3 Cyl 1.2L, 3 Cyl 1.3L
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Chevrolet Trailblazer Control Assembly, Htr & A/C User Interface *Jet Black
Part Number: 42729743
$100.68 MSRP: $180.60
You Save: $79.92 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Dash Control Unit, Heater Control
- Replaced by: 42854938
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Trailblazer | 4 DOOR EXT | 3 Cyl 1.2L, 3 Cyl 1.3L
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Chevrolet Trailblazer Heater & Air Conditioning Control Selector Switch *Marked Print
Part Number: 15081585
$36.64 MSRP: $52.66
You Save: $16.02 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch Assembly, Heater & A/C Control Selector *Marked Print ; Switch, A/C Electric Temperature And Motor Control
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Chevrolet Trailblazer | 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L
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Chevrolet Trailblazer Heater And Air Conditioner Control Blower Switch Knob
Part Number: 88986180
$3.71 MSRP: $9.84
You Save: $6.13 (63%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Knob,Heater & A/C Control Blower Switch
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Chevrolet Trailblazer | 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Chevrolet Trailblazer Control Assembly, Htr & A/C User Interface *Jet Black
Part Number: 42732420
$123.79 MSRP: $223.04
You Save: $99.25 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 42775570
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Trailblazer | 4 DOOR EXT | 3 Cyl 1.2L, 3 Cyl 1.3L
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Chevrolet Trailblazer Control Assembly, Heater & A/C
Part Number: 15814152
$216.90 MSRP: $387.02
You Save: $170.12 (44%)
Product Specifications
- Other Name: CONTROL, A/C Instrument Panel; Dash Control Unit, Heater Control
- Replaces: 15203179, 15220319
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
Chevrolet Trailblazer Control Assembly, Heater & A/C
Part Number: 25945046
$151.34 MSRP: $268.90
You Save: $117.56 (44%)
Product Specifications
- Other Name: CONTROL, A/C Instrument Panel; Dash Control Unit, Heater Control
- Replaces: 10395426, 15132072, 15203181, 15220318, 15165920, 15195333
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
Chevrolet Trailblazer Heater & Air Conditioner Control Assembly (W/ Amplitude Modulation/Frequency Modulation Stere
Part Number: 15184098
Product Specifications
- Other Name: Control Assembly, Heater & A/C (W/ Amplitude Modulation/Frequency Modulation Stere
- Replaces: 15081587
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2003 Chevrolet Trailblazer | 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Chevrolet Trailblazer Heater & Air Conditioner Control Assembly (W/ Amplitude Modulation/Frequency Modulation Stere
Part Number: 25815715
Product Specifications
- Other Name: Control Assembly, Heater & A/C (W/ Amplitude Modulation/Frequency Modulation Stere
- Replaces: 15082687
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2009 Chevrolet Trailblazer | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
Chevrolet Trailblazer Heater And Air Conditioner Control Blower Switch Knob
Part Number: 12227670
Product Specifications
- Other Name: Knob,Heater & A/C Control Blower Switch
- Replaces: 9369570, 09369570
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
Chevrolet Trailblazer Dash Control Unit
Part Number: 25945047
$169.14 MSRP: $300.98
You Save: $131.84 (44%)
Product Specifications
- Other Name: Control Assembly, Heater & A/C ; Control, A/C Instrument Panel; Heater Control
- Replaces: 10395427, 15165921, 15220317, 15195334, 15132073
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
Chevrolet Trailblazer Auxiliary Heater & Air Conditioner Blower Control Switch Assembly
Part Number: 1999499
Product Specifications
- Other Name: Switch Asm,Auxiliary Heater & A/C Blower Control ; Switch, A/C Electric Temperature And Motor Control; AC Switch, Blower Motor Switch
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2003 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Chevrolet Trailblazer Heater & Air Conditioner Control Temperature Knob
Part Number: 9369553
Product Specifications
- Other Name: Knob,Heater & A/C Control Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
Chevrolet Trailblazer Heater & Air Conditioner Control Temperature Knob
Part Number: 9390673
Product Specifications
- Other Name: Knob,Heater & A/C Control Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L

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Chevrolet Trailblazer A/C Switch Parts Questions & Experts Answers

Heater & Air Conditioner Control Assembly (W/ Amplitude Modulation/Frequency Modulation Stere
15250212
Q: How do I remove and install the front and rear heater controls?
A: To remove and install the front A/C switch, start by disconnecting the cable from the negative terminal of the battery. Then, remove the console and the accessory trim plate. Next, remove the control assembly retaining screws and depress the tabs to pull the unit from the dash. Use a small screwdriver to release the clips and disconnect the electrical connections and control cables if necessary.

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