Why is there no air from the 4th speed of the Buick Excelle's air conditioner when speeds 1, 2, and 3 are working normally?

1 Answers
VanMaggie
07/29/25 4:47pm
Buick Excelle's air conditioner has airflow in speeds 1, 2, and 3, but no airflow in speed 4 is a switch issue. Here is the relevant introduction of Buick Excelle: 1. The Buick Excelle is an entry-level family sedan launched by SAIC-GM Buick, with the prototype being the latest global mid-size sedan developed by General Motors; 2. The Buick Excelle is positioned as an entry-level family car, featuring a dynamic exterior, high-quality interior, a brand-new drive system that is smooth and fuel-efficient, and comes standard with the 10th generation OnStar assistant, including a built-in 4G LTE mobile hotspot; 3. The all-new generation Excelle adopts Buick's new family design language, equipped with the brand-new Buick family-style winged grille, with dark mesh texture paired with a high-gloss electroplated shield-shaped outer contour, showcasing youthful vitality.
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