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Why is the Buick LaCrosse compressor not working?

1 Answers

StSara

07/30/25 7:12am

There are several reasons why the Buick LaCrosse compressor may not be working: 1. Circuit failure: First check if the circuit fuse is blown. If the fuse is intact, use a multimeter to measure the circuit to confirm this fault. Free repairs are available at 4S stores during the warranty period. 2. Air conditioning pump failure: Open the engine hood and connect the refrigerant gauge to check the pressure. If the pressure is within normal range, measure the compressor plug to check if the voltage reaches 12V. If the voltage reaches 12V, it can be inferred that the air conditioning pump is damaged and needs replacement. 3. Air conditioning pressure switch failure. The air conditioning pressure switch controls the electric fan, which helps dissipate heat from the radiator and condenser. If the pressure switch is damaged and the electric fan doesn't rotate, the air conditioning system cannot dissipate heat, causing the compressor to stop working. Replace the air conditioning pressure switch to resolve this issue.

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