1. Simple Checks:
* Fan Speed: Is the blower motor fan working at all? If not, the problem might be a blown fuse, a faulty blower motor resistor, a bad blower motor switch, or a malfunctioning blower motor itself. Check the fuses first.
* Temperature Control: Is the temperature control dial set to hot? Try moving it through the range to see if there's any change in airflow temperature.
* Airflow Direction: Is the airflow directed to the vents, or is it set to defrost or floor? Make sure it's pointed towards the cabin.
2. Coolant System Issues:
* Low Coolant Level: Check the coolant level in the radiator and overflow reservoir. Low coolant means the system can't transfer enough heat to the heater core.
* Coolant Leaks: Inspect the heater hoses (the two that connect to the heater core) for leaks, cracks, or loose connections. A leak prevents sufficient coolant flow.
* Heater Core Issues: The heater core itself could be clogged, leaking internally (leading to a coolant leak inside the car), or failing completely. This often manifests as lukewarm or no heat, even with sufficient coolant.
* Thermostat Stuck Closed: If the thermostat is stuck closed, the engine won't reach operating temperature, and there will be little to no heat.
* Water Pump: A faulty water pump won't circulate coolant effectively, preventing heat transfer to the heater core.
3. Electrical Issues (beyond the blower motor):
* Heater Control Module (if equipped): Some Camaros had a control module that could fail. This is more likely if other climate controls aren't working properly.
* Wires and Connections: Check all wiring connections related to the heater system for corrosion, loose connections, or damaged wires. Pay close attention to the connections at the heater core.
Troubleshooting Steps:
1. Start with the simplest checks: Fan speed, temperature control, airflow direction, and coolant level.
2. Check fuses: Refer to your owner's manual to locate and check the relevant fuses.
3. Inspect hoses: Look for leaks or kinks in the heater hoses.
4. Feel the heater hoses: When the engine is warm, touch the heater hoses. If both are cold, the problem is likely upstream (thermostat, water pump, low coolant). If one is hot and the other cold, the problem might be a blockage or failure within the heater core or its connections.
5. If you're comfortable, you can try bleeding the air from the coolant system. This is often necessary after a coolant change or repair.
6. If none of the above solves the problem, it's best to consult a mechanic. Diagnosing heater core issues or electrical problems can be complex.
Remember safety first! Work on a cool engine, and use caution when handling coolant, as it can be corrosive and toxic. If you're not comfortable working on your car's systems, take it to a qualified mechanic.
