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.
Heater System: Description
System is a blend air type in which outside air is heated and then mixed in varying amounts with cooler outside air to attain desired temperature. System consists basically of 3 parts: Blower and air inlet assembly, heater air distributor assembly and heater control assembly.
Heating components are attached to dash panel on right side of vehicle. Blower and air inlet assembly and coolant hoses are located on the engine side of dash panel while heater core and distributor duct are on passenger side. Since the system has no heater control valve, coolant circulation keeps heater core hot at all times. Air passing through core receives maximum heat.
Operation of blower motor is controlled by the fan switch. The motor is connected in series with the fan switch and blower resistor assembly. A 25 amp fuse is provided to protect blower circuit operation.
Use the Manual With the Right Hardware
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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.
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