How to replace the HVAC control module on 2008 Cadillac STS?

Pull the ashtray, and the radio is to replace the HVAC control module. Then, remove the HVAC control module retaining screws and disconnect electric connectors. Remove the HVAC control module and replace it with the new module then plug the electrical connectors. Make sure to comply with the fastener notice for proper fixation. Secure the H.V.A.C control module using the retaining screws to torque them to a 2 N.m (18 lb in). Lastly, re-install the radio and the ashtray. For programming and setup, refer to the control module references.

OEM 2008 Cadillac STS HVAC Control Module

Heater Control Assembly

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2008 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.
More Info
Fits the following 2008 Cadillac STS Submodels:
- Base, Platinum, V | 6 Cyl 3.6 L GAS, 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS

2008 Cadillac STS HVAC Control Module

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2008 Cadillac STS HVAC Control Module Parts and Q&A

Q: How to replace the HVAC control module on 2008 Cadillac STS?
A: Pull the ashtray, and the radio is to replace the HVAC control module. Then, remove the HVAC control module retaining screws and disconnect electric connectors. Remove the HVAC control module and replace it with the new module then plug the electrical connectors. Make sure to comply with the fastener notice for proper fixation. Secure the H.V.A.C control module using the retaining screws to torque them to a 2 N.m (18 lb in). Lastly, re-install the radio and the ashtray. For programming and setup, refer to the control module references.