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Low frequency brake system noise has been a systemic and ongoing issue for several automakers. The noise is a combined effect of brake and suspension systems working with each other. The noise transmission path is also important. The latest warranty and quality indicators on this has resulted in high degree of dissatisfaction for several vehicles. The customer complaints have been for grind noise, grunt and groan. The team focused on a multi-level integrated approach for this problem. The first step was deep diving and dissecting the customer complaint data. The low frequency noise for grind and groan can be reduced to several contributors. One of the main issues was the movement of pads over the rotor fins resulting in dynamic groan type of noise. It was important to relate this to the customer complaint for grind. In association with that, the grind noise was also caused by in-stop grunt type of noise.