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HOMESERVICE MANUALSCHEVROLET1972IMPALA 2D CONVERTIBLE, 5.7L ENG VIN L, NOT AVAILABLE TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAIR CONDITIONING FLAT RATE
1972 Chevrolet Impala 2D Convertible, 5.7L Eng VIN L, Not Available Trans
Air Conditioning Flat Rate
1972 Chevrolet Impala 2D Convertible, 5.7L Eng VIN L, Not Available TransSECTION Air Conditioning Flat Rate
- Discharge, Evacuate, Leak Test, Charge & Operational Test
- Evacuate, Leak Test & Charge System
- Add Partial Charge
- Weather Eye Control Assembly - Replace
- Weather Eye Control Cable - Replace
- Blower Switch - Replace
- A/C Blower Switch - Replace
- Blower Motor Resistor - Replace
- Heater Valve - Replace
- Heater Hose - Replace
- Heater Core & Blower Housing ASS'Y - R & R
- Blower Motor & Blower Wheel - Replace
- Blower Motor Relay And/Or Wire Harness - Replace
- Heater & Defroster Damper Housing - Replace
- Heater Core Housing - R & R
- Blower Housing - R & R
- Defroster Duct - Replace
- Defroster Bezel - Replace
- Evaporator & Housing Assembly - R & R
- A/C Discharge Duct - Replace
- Floor Cooling Door - Replace
- Damper Door Vacuum Motor - Replace
- Damper Door Vacuum Control - Replace
- Temperature Control Thermostat - Replace
- Vacuum Storage Tank-Replace
- A/C Temperature Override Switch-Replace
- A/C Micro-Switch - Replace
- Temperature Control Thermostat Capillary Tube - Inspects & Correct Installation & Make Confirming Road Test Upon Completion
- Expansion Valve - R & R
- A/C Idler Pulley - R & R
- A/C Drive Belt - Adjust
- A/C Back Idler Pulley - Replace
- Compressor & Clutch Assembly - R & R
- Compressor Front Bearing, Seal Plate & Seal Ring - Replace
- Compressor Bottom Plate Gasket - Replace
- Compressor Rear Bearing Plate Gasket - Replace
- Compressor Valve Plate - Replace
- Compressor Clutch Pulley - R & R Or Replace
- A/C Hose, Either - Replace
- Condenser - R & R
- Road Test To Verify Operation & Cooling Efficiency
- BUICK
- Notes
- Heater System Operations
- Cowl Air Vent Cables - R & R
- Heater Blower Motor - R & R
- Heater Blower Fan - R & R
- Heater Core - R & R
- Heater Blower Switch - R & R
- Heater Hoses - R & R
- Heater Blower Motor Resistor - R & R
- Heater Control Cable - R & R
- Defroster Control Cable - R & R
- Selector Vacuum Switch - R & R
- Heater Control Panel - R & R
- Defroster Outlet - R & R
- Rear Window Defroster Switch - R & R
- Rear Window Defroster Blower Motor - R & R
- Manual A/C System Operations
- Compressor Assembly - R & R
- Compressor Internal Cylinder ASS'Y - R & R Or R & R And Overhaul
- Compressor Front Head And/Or Shell ASS'Y - R & R
- Compressor Rear Head And/Or Oil Pump Gears - R & R
- Compressor Pressure Relief Valve - R & R
- Suction & Discharge Valve Assembly - R & R
- Compressor Front Seal, Seat, & O-Ring - R & R
- Compressor Coil & Housing Assembly - R & R
- Compressor Pulley & Bearing Assembly - R & R
- POA Valve - R & R
- Compressor Belts - R & R
- Expansion Valve Assembly - R & R
- Evaporator Core - R & R
- Condenser Assembly R & R
- Receiver - Drier Assembly - R & R
- Blower Motor - R & R
- Blower Motor Fan - R & R
- Control Cable(S) - R & R
- Manual A/C Control Assembly - R & R
- Blower Motor Relay R & R
- Blower Switch - R & R
- Compressor Ambient Switch - R & R
- Circuit Board - R & R
- Contact Selector - R & R
- Master Vacuum Switch - R & R
- Selector Vacuum Valve - R & R
- Manual A/C Water Valve Assembly - R & R
- Vacuum Tank R & R
- Refrigerant Liquid Hose Assembly - R & R
- Refrigerant Suction Hose Assembly - R & R
- Refrigerant Discharge Hose Assembly - R & R
- Distributor Duct - R & R
- A/C Outlet - R & R
- A/C Outlet Vanes - R & R
- Automatic A/C System Operations
- Master Vacuum Valve And/Or Microswitch - R & R
- Compressor Ambient Switch - R & R
- Control Assembly - R & R
- Programmer - R & R
- Vacuum Valve - R & R
- Blower Switch Contacts - R & R
- Blower Switch - R & R
- Transducer - R & R
- Amplifier & Feedback Pot Assembly - R & R
- Output Shaft - R & R
- Vacuum Checking Relay - R & R
- Circuit Board Assembly, Resistor, Blower - R & R
- CADILLAC
- Notes
- Evacuate & Charge A/C System
- Heating System Operations
- A/C System Operations
- Condenser - R & R Or Replace
- Receiver-Drier - R & R Or Replace
- Compressor - R & R
- Pulley & Bearing Assembly - R & R
- Clutch Coil - Replace
- Front Seal Assembly - Replace
- Rear Compressor Head, Oil Pump Gears And/Or Valve Assembly - Replace
- Internal Cylinder - R & R
- Evaporator Assembly - R & R
- A/C & Heater Air Selector Assembly - R & R
- Suction Throttling Valve - R & R Or Replace
- Expansion Valve - R & R Or Replace
- Blower Motor - R & R
- Liquid Line - Replace
- Hose - Replace
- O-Rings - Replace
- Control Head - R & R
- Power Servo Or Programmer - R & R Or Replace
- In-Car Sensor And/Or Temperature Switch - R & R Or Replace
- Ambient Switch And/Or Sensor Assembly - R & R Or Replace
- Engine Temperature Switch - R & R Or Replace
- Blower Motor Relay - Replace
- Outlet Grille - Replace
- CHEVROLET
- Heater System Operations
- A/C System Operations
- Notes
- Compressor Assembly - Replace
- Compressor Hub & Drive Plate - Replace
- Compressor Pulley Bearing - Replace
- Compressor Coil Housing Assembly - Replace
- Compressor Shaft Seal Assembly - Replace
- Compressor Charge Fitting - Replace
- Compressor Relief Valve - Replace
- Compressor Rear Head And/Or Reed Assembly - Replace
- Compressor Front Head And/Or Reed Assembly Replace
- Compressor Assembly - Overhaul
- Condenser - Replace
- Sight Glass - Replace
- Receiver-Drier - Replace
- Evaporator - Replace
- Evaporator Case - Replace
- Expansion Valve - Replace
- A/C Blower Motor - Replace
- A/C Blower Motor Switch - Replace
- A/C Blower Resistor - Replace
- A/C Relay - Replace
- A/C Clutch Switch (Low Blow) - Replace
- Ambient Temperature Switch - Replace
- A/C Control Assembly - Replace
- COMFORTRON Temperature Control Switch - Replace
- POA Valve - Replace
- In-Car COMFORTRON Sensor - Replace
- Ambient COMFORTRON Sensor & Switch - Replace
- COMFORTRON Programmer - Replace
- Thermal Vacuum Valve - Replace
- Vacuum Tank - Replace
- COMFORTRON Power Servo - Replace
- A/C Outlets And/Or Deflector - Replace
- Defroster Cable - Replace
- Diverter (Outlet) Door Cable - Replace
- Temperature Door Cable - Replace
- Plenum Valve Diaphragm (Outside Air) - Replace
- Kick Pad Valve (RECIRC Air) Diaphragm - Replace
- COMFORTRON Mode Shift Vacuum Diaphragm - Replace
- COMFORTRON Defroster Vacuum Diaphragm - Replace
- A/C Line, Receiver-Drier To Expansion Valve - Replace
- Hoses, Fittings & Muffler Assembly - Replace
- A/C Line, Condenser To Receiver-Drier - Replace
- CHEVROLET VEGA
- Heater System Operations
- A/C System Operations
- Notes
- Compressor Assembly - Replace
- Compressor Hub & Drive Plate - Replace
- Compressor Pulley And/Or Bearing - Replace
- Compressor Coil Housing Assembly - Replace
- Compressor Shaft Seal Assembly - Replace
- Compressor Relief Valve - Replace
- Compressor Rear Head And/Or Reed Assembly - Replace
- Compressor Front Head And/Or Reed Assembly - Replace
- Compressor Assembly - Overhaul
- Condenser-Replace
- Sight Glass - Replace
- Receiver-Drier - Replace
- Evaporator - Replace
- Evaporator Case - Replace
- Expansion Valve - Replace
- A/C Blower Motor - Replace
- A/C Blower Motor Switch - Replace
- A/C Resistor - Replace
- A/C Relay - Replace
- A/C Control Assembly - Replace
- POA Valve - Replace
- Vacuum Tank - Replace
- A/C Outlets And/Or Deflector - Replace
- Control Cable Operations
- CHRYSLER Corp.
- Notes
- A/C System - Charge
- Heater Core - Replace
- Water Valve Thermostat, ATC - Replace
- Water Valve - Replace
- Potentiometer, ATC - Replace
- A/C Housings - Replace
- Temperature Control Cable - Replace
- Blower Motor Switch - Replace
- Compressor Ambient Switch, ATC - Replace
- Ambient Sensor, ATC - Replace
- In-Car Sensor, ATC - Replace
- Blower Motor Resistor, ATC - Replace
- Wiring Harness, Instrument Panel - Replace
- Wiring Harness, ATC - Replace
- Evaporator Temperature Control Switch - Replace
- Master Switch, ATC - Replace
- Low Pressure Cut Off Switch - Replace
- Compressor Clutch Switch, ATC - Replace
- Vacuum Control Switch - Replace
- Vacuum Switch, Fresh Air Door, ATC - Replace
- Compressor Switch, Instrument Panel Control - Replace
- Cold Engine Lockout Switch - Replace
- Compressor Piston & Connecting Rod - Replace
- Compressor - Replace
- ETR Valve - Replace
- EPR Valve - Replace
- Check Valves, ATC - Replace
- Compressor Crankshaft - Replace
- Compressor Clutch Bearing - Replace
- Compressor Clutch Field Coil - Replace
- Compressor Oil Pump - Replace
- Compressor Oil Pump Seal - Replace
- Compressor Oil Sump - Replace
- Compressor Oil Sump Gasket - Replace
- Receiver-Drier - Replace
- Condenser - Replace
- Power Servo, ATC - Replace
- Evaporator Assembly, Roof Unit - Replace
- Sub Cooler - Replace
- ETR Switch, ATC - Replace
- Hoses & Tubes - Replace
- Center Air Outlet W/Housing - Replace
- Blower Motor - Replace
- Blower Motor Resistor - Replace
- Evaporator Core - Replace
- Expansion Valve - Replace
- Actuators, ATC - Replace
- Ford Motor Co.
- Heater System Operations
- Heater Servo Control Switch - Replace
- Air Door Vacuum Motor - Replace
- Heater Hose - Replace
- Defogger Motor - Replace
- Heater Water Valve - Replace
- Heater Core - Replace
- Defogger Switch - Replace
- Temperature Control Cable - Replace
- Heater Blower Motor - Replace
- Defroster Control Cable - Replace
- Heater Control Assembly - Replace
- Heater Switch - Replace
- Heater Blower Motor Resistor - Replace
- A/C System Operations
- Notes
- Evacuate, Charge, Pressure Test & Leak Test System
- Evacuate, Leak Test & Recharge A/C System
- Evaporator Thermostatic Switch - Replace
- Compressor Shaft Seal Kit - Replace
- Compressor Valve Plate - Replace
- Clutch Pulley Bearing - Replace
- Condenser Assembly - Replace
- Control Box, ATC - R & R Or Replace
- Ambient Sensor - Replace
- Compressor Valve Or Gasket - Replace
- A/C Blower Motor - Replace
- Hose, Receiver-Drier To Evaporator - Replace
- Hose, Evaporator To Compressor - Replace
- Hose, Compressor To Condenser - Replace
- Expansion Valve - Replace
- Receiver-Drier - Replace
- Evaporator Core - Replace
- Pressure Relief Valve - Replace
- Compressor Assembly - Replace
- A/C Temperature Control Switch - Replace
- A/C Blower Motor Switch - Replace
- Heater System Operations
- OLDSMOBILE
- Notes
- Heater System Operations
- A/C-Heater System Control Units
- Control ASS'Y Attaching Parts - R & R
- Control ASS'Y 8. Attaching Parts, COMFORTRON - R & R
- Wiring Harness, Relays, Circuit Breaker - R & R
- Blower Motor Resistor (Except COMFORTRON) - R & R
- COMFORTRON Temperature Control Units - R & R
- COMFORTRON Programmer And/Or Actuating Link - R & R
- Vacuum Diaphragm - R & R
- Temperature Control Cable - R & R
- Vacuum Tank, Vacuum Hose - R & R
- Switch Adjustment
- Heater Hoses, Water Valve - R & R
- Refrigeration System Operations
- Compressor Belt - Adjust
- Compressor Clutch Driven Plate, Pulley, Bearing, Clutch Coil - R & R
- Compressor Front Seal
- Compressor Assembly
- "O" Rings - R & R
- Sight Glass And/Or Gasket - R & R
- Compressor Mounting Bracket - R & R
- Refrigerant Lines, Valve Cores - R & R
- Refrigerant Lines - Repair
- Superheat Shut-Off Switch - R & R
- Receiver-Drier - R &R
- Condenser - R & R
- Expansion Valve - R & R
- A/C Leak Check
- POA Valve - R & R
- Evaporator ASS'Y - R & R
- A/C Performance Test
- Partial Charge A/C System
- Comfort RON Test
- Air Distribution System
- PONTIAC
- Notes
- Lower Level Ventilation System Operations
- Upper Level Ventilation System Operations
- Heater System Operations
- Heater Core - Replace
- Heater Case - Replace
- Blower Speed Switch - Replace
- Heater Hose - Replace
- Heater Wiring Harness - Replace
- Heater Wiring Harness - Repair
- Heater Blower Motor Resistor - Replace
- Heater Control Diaphragms - Replace
- Vacuum Hose Harness - Replace Or Repair
- Defroster Nozzle - Replace
- Heater Defroster Cable - Replace
- Air De-Ice Cable - Replace
- Heater Air Inlet Cable - Replace
- Temperature Cable - Replace
- Temperature Door Cam ASS'Y - Replace
- Heater Control Panel - R & R
- A/C System Operations
- Notes
- Compressor ASS'Y - Replace
- Compressor Shaft Seal - Replace
- Clutch Hub & Armature Plate - Replace
- Pulley Or Bearing - Replace
- Clutch Coil - Replace
- POA Valve & Seals - Replace
- Compressor Belt - Replace
- Expansion Valve & Seals - Replace
- Evaporator Case - Replace
- Evaporator Drain Hose - Replace
- Condenser & Seals - Replace
- Receiver-Drier - Replace
- Air Inlet & Valve ASS'Y - Replace
- A/C Blower Motor And/Or Impeller - Replace
- A/C Blower Motor Cooling Tube - Replace
- A/C-Heater Core - Replace
- A/Cheater Case - Replace
- Cam Assembly, Temperature Door - Replace
- Temperature Door - Replace
- Temperature Cable - Replace
- Control ASS'Y - Replace
- Hi Blower Relay - Replace
- Blower Speed Switch - Replace
- Compressor Clutch Switch - Replace
- De-Ice Switch - Replace
- Master Switch - Replace
- Blower Motor Resistor - Replace
- Wiring Harness - Replace, Repair
- Vacuum Harness - Replace
- Vacuum Extension Harness - Replace
- Master Relay - Replace
- Defroster Vacuum Diaphragm - Replace
- Diverter Vacuum Diaphragm - Replace
- Air Inlet Vacuum Diaphragm - Replace
- Plenum Air Inlet Vacuum Diaphragm - Replace
- Evaporator Purge Vacuum Diaphragm - Replace
- Receiver To Expansion Valve Hose & Coupling - Replace
- POA Valve To Compressor Hose - Replace
- Muffler To Compressor Hose - Replace
- O-Ring Seals - Replace
- Condenser To Receiver Hose & Coupling - Replace
- Hose Clamp - Replace
- Muffler & Compressor Fitting ASS'Y - Replace
- Muffler ASS'Y - Replace
- Compressor Fitting ASS'Y - Replace
- SCHRADER Valve - Replace
- Cold Air Duct - R & R
- Air Outlet Duct - Replace
- Outlet Nozzle (Deflector) - Replace
- Upper Air Outlet Duct - Replace
- Lower Extension Duct - Replace
- Ambient Sensor (Automatic Air) Or Ambient Switch (Custom Air) - Replace
- Heater Hose - Replace
- In-Car Sensor - Replace
- Door Link Adjustment
- Potentiometer - Replace
- Low (Purge) Blower Relay - Replace
- Auto (Blower On) Relay - Replace
- Engine Thermal (Temperature) Switch - Replace
- Programmer - R & R
- Bi-Level Boost Switch - Replace
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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.