Buick Rendezvous intermittent AC and electrical issues causing dashboard lights to malfunction and components to fail. on Buick Rendezvous

Submitted by doreydoc · Jun 23, 2025
Published by RepairPal

Problem overview

Some Buick Rendezvous owners report experiencing intermittent AC and electrical issues, including malfunctioning dashboard lights and failing components. These electrical system problems can be alarming and may require immediate attention for safety. Additionally, some owners find that their AC is not cooling properly due to low or overcharged refrigerant, compressor malfunctions, or clogged filters, which can lead to ineffective cooling. Others report their AC blowing hot air intermittently, often linked to similar refrigerant issues or faulty sensors. Some owners also experience problems with the AC fan blower motor, which may stop working due to blown fuses or bad relays, impacting airflow and cooling inside the vehicle. Diagnosing weak airflow and conducting refrigerant leak tests are crucial steps for proper maintenance, as these issues can prevent a comfortable ride. Timely repairs and regular checks are recommended to ensure the proper functioning of the vehicle's systems and components.

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