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Category 11 of 12

A/C & Heating

A/C compressors, condensers, evaporators, heater cores, blower motors and expansion valves to General Motors original specification.

Air conditioning is a closed system, and its components fail as a chain. When a compressor seizes it distributes metal debris through the condenser and the expansion device, which is why replacing the compressor alone so often ends in a second failure. GM specifies compressor displacement, control valve behaviour and refrigerant charge weight together. We supply climate control components to the original specification, and can supply the matched receiver-drier or accumulator that must be replaced whenever the system is opened.

How the refrigerant cycle works

1 Compressor raises pressure 2 Condenser sheds heat 3 Drier / Accumulator removes moisture 4 Expansion Valve drops pressure 5 Evaporator absorbs cabin heat CLOSED LOOP
Schematic view — component order shown for orientation. Not a model-specific engineering drawing.

The refrigerant loop is sealed. Any repair that opens it must end with evacuation and a measured recharge, not a top-up.

What we supply in this category

Symptoms that point to this system

Common complaints

  • Air that cools at speed but not at idle
  • A compressor clutch that cycles rapidly
  • Poor airflow at any blower setting
  • Damp carpet on the passenger side or a fogged windscreen
  • Noise from the compressor when the system engages

Before you order

Whenever the refrigerant circuit is opened, the receiver-drier or accumulator must be replaced. Its desiccant saturates within minutes of exposure to air, and reusing it puts moisture back into a freshly repaired system.

Vehicle coverage

We supply A/C & Heating components across every General Motors division:

Questions we are asked about A/C & Heating

Must the condenser be replaced with the compressor?

If the compressor failed internally, yes. Debris lodges in the condenser's narrow parallel-flow passages and cannot be flushed out reliably. It will migrate into the new compressor.

Why is there water on the passenger floor?

Usually a blocked evaporator drain rather than a leak. If the fluid is sweet-smelling and slightly oily, it is coolant from the heater core instead, which is a different repair.

Need this part identified?

Send the VIN and a description. We will identify the correct OE part and quote it back to you.

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