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 MANUALSCHEVROLET1969BISCAYNE 6.5L ENG, AUTOMATIC TRANS, TRANS MFR CD THM400REPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSMANUAL TEMPERATURE CONTROL - AIR CONDITIONER1969 CHEVROLET "FOUR-SEASONS"NOTES
1969 Chevrolet Biscayne 6.5L Eng, Automatic Trans, Trans Mfr CD THM400
1969 CHEVROLET "Four-Seasons": Notes
1969 Chevrolet Biscayne 6.5L Eng, Automatic Trans, Trans Mfr CD THM400SECTION Notes
NOTE:
There are two manually controlled systems available for 1969 Chevrolet models: The "Four-Season System"
which is an integral air conditioner-heater system, and the "GM Chevrolet Air Conditioner"
which is a self-contained dealer installed unit. Either system is available for all Chevrolet cars except the Corvette. The "GM Chevrolet Air Conditioner" cannot be installed in the Corvette.
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.