GMC Central air conditioner Parts — Browse All Models

GMC central air conditioner safety tips

• Conduct yearly maintenance. Have a HVAC service technician inspect, clean and perform required maintenance on your central air conditioning system annually. The service technician will examine the unit thoroughly for possible safety hazards such as worn components and shorts in the electrical system.
• Change the air filters regularly. The air filters remove contaminants from the air in your home. Use allergen air filters to remove dust and pollen that can cause breathing problems.
• Disconnect electrical power from the central air conditioner anytime you perform maintenance or access internal wiring or components to complete repairs.
• Read and follow all operational and safety instructions in the owner's manual for your central air conditioner.
• Have a service technician examine and repair the central air conditioner whenever it fails and you're not able to fix the problem with simple troubleshooting steps described in the owner's manual.

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Replacing the wall control thermostat for your GMC central air conditioner

• Shut off the house circuit breakers for your central air conditioner to disconnect electrical power.
• Remove the cover of the existing wall control thermostat. Follow the instructions in the owner's manual for the existing thermostat to remove its cover.
• Remove the thermostat mounting screws and pull the thermostat out from the wall slightly to access thermostat wires.
• Disconnect the thermostat wires and remove the existing wall control thermostat.
• Connect the wires to the new wall control thermostat.
• Mount the new thermostat to the wall using the mounting screws. Install the thermostat cover.
• Reset the house circuit breakers for the central air conditioner to restore electrical power.

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