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 MANUALSCHEVROLET2013EXPRESS 1500 RWD V8-5.3LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - HVACAUXILIARY CABIN HEATER CONTROL MODULESERVICE AND REPAIR
2013 Chevrolet Express 1500 RWD V8-5.3L
Auxiliary Cabin Heater Control Module: Service and Repair
2013 Chevrolet Express 1500 RWD V8-5.3LSECTION Service and Repair
Heater Coolant Heater Control Replacement
Removal Procedure
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle Service and Repair.
2. Disconnect the heater coolant heater electrical connectors.
3. Remove the heater coolant heater control module upper retaining screws.
4. Remove the heater coolant heater control module lower retaining screws.
5. Remove the heater coolant heater control module from the coolant heater.
6. Disconnect the heater coolant heater control module to coolant heater electrical connector.
Installation Procedure
1. Connect the heater coolant heater control module to coolant heater electrical connector.
2. Install the heater coolant heater control module to the coolant heater.
Caution:
Refer to Fastener Caution Fastener Caution.
3. Install the heater coolant heater control module retaining screws.
* Tighten the upper screws to 3 Nm (27 lb in).
* Tighten the lower screws to 6 Nm (53 lb in).
4. Connect the heater coolant heater electrical connectors.
5. Lower the vehicle.
RENDER: 1.0x
NO RELATED
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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.