Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC2013SIERRA 2500 4WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGRELAYS AND MODULES - HVACCONTROL MODULE HVACTESTING AND INSPECTIONHVAC SYSTEM CONTROL MODULE PROGRAMMING AND SETUP
2013 GMC Sierra 2500 4WD V8-6.6L DSL Turbo
HVAC System Control Module Programming and Setup
2013 GMC Sierra 2500 4WD V8-6.6L DSL TurboSECTION HVAC System Control Module Programming and Setup
HVAC System Control Module Programming and Setup
Each of the following service procedures may require programming or setup procedures to be performed on the HVAC control module or HVAC actuators.
HVAC Control Module Replacement
If the HVAC control module is replaced it must be programmed with the latest operating software and vehicle calibrations. Refer to Service Programming System (SPS) Service Programming System (SPS).
HVAC Control Module Reprogramming
Do not reprogram the HVAC control module, unless directed by a service procedure, or a service bulletin.
Reprogram HVAC Control Module-Refer to Service Programming System (SPS) Service Programming System (SPS).
Actuator Replacement
If an actuator is replaced, the following procedure must be performed:
* Re-Calibrating Actuators-Refer to Actuator Recalibration HVAC - Manual for the manual system.
* Re-Calibrating Actuators-Refer to Actuator Recalibration HVAC - Automatic for the automatic system.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.