How to replace the HVAC control module on 2009 Cadillac STS?

In order to replace HVAC control module, take off ashtray and radio. Unscrew the retaining screws and unconnect the electrical connectors. Install the new module and reconnect the electrical connectors and screw them. Lastly, install the radio and ashtray once again. In the case of programming, refer to Control Module References.

OEM 2009 Cadillac STS HVAC Control Module

Heater Control Assembly

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2009 Cadillac STS Blower Motor Resistor Part Number: 84178783
$89.14 MSRP: $183.19
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Product Specifications
- Other Name: Module Assembly-Blower Motor Control; Control Module; Resistor
- Replaces: 13503201, 13598134, 13598091, 15141283, 13598090, 13501703, 22811003
- Item Weight: 0.70 Pounds
- Item Dimensions: 7.2 x 7.1 x 6.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84178783
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2009 Cadillac STS Submodels:
- Base, Platinum, V | 6 Cyl 3.6 L GAS, 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS

2009 Cadillac STS HVAC Control Module

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2009 Cadillac STS HVAC Control Module Parts and Q&A

Q: How to replace the HVAC control module on 2009 Cadillac STS?
A: In order to replace HVAC control module, take off ashtray and radio. Unscrew the retaining screws and unconnect the electrical connectors. Install the new module and reconnect the electrical connectors and screw them. Lastly, install the radio and ashtray once again. In the case of programming, refer to Control Module References.