Buick Envision speedometer and odometer work intermittently with all lights illuminated on the cluster on Buick Envision

Some Buick Envision owners report experiencing intermittent issues with the speedometer and odometer, accompanied by all lights illuminated on the cluster. Common causes for this malfunction include a faulty vehicle speed sensor (VSS), a defective speedometer, or underlying electrical issues. If the odometer functions normally while the speedometer does not, it may indicate a speedometer failure. Owners may also notice that checking the cruise control can help assess the condition of the VSS. Additionally, problems could stem from a broken Engine Control Unit, blown fuses, or malfunctioning wheel speed sensors. Dimming or flickering dashboard lights might suggest battery or alternator failures. To address these concerns, it is recommended that owners have their vehicles inspected by a qualified mechanic, check for loose connections in the instrument cluster, and ensure the battery and alternator are functioning properly. If the issues persist, consulting with a certified Buick service center may provide further assistance.