Is your Mercedes-Benz GLC vibrating between 45 and 55 mph? This common 4MATIC drive system issue often stems from harmonic imbalances in the driveshaft, worn CV joints, or collapsed hydraulic engine mounts. Our specialized diagnostic workflow uses vibration spectrum analysis and Fault Tree Analysis to isolate the root cause. From EPS software recalibration to precision driveline balancing, we restore luxury-grade smoothness. Book your GLC driveline harmonic analysis in Macomb