Chevrolet Suburban 1500 rear differential ring and pinion noise worsening under load on Chevrolet Suburban 1500

Some Chevrolet Suburban 1500 owners report experiencing rear differential ring and pinion noise that worsens under load, often characterized by a howling sound noticeable at speeds above 20 mph. This noise may be indicative of worn bearings in the differential, particularly rear axle bearings, especially if the sound persists after replacing carrier bearings. Owners are advised to address this issue promptly, as neglecting it can lead to more severe problems, including potential accidents. Accurate diagnosis of differential issues is crucial to avoid unnecessary repairs and expenses, with repair costs for the ring and pinion, including a master overhaul kit, estimated at around $400-$350. It is recommended that owners have their differential inspected by a qualified mechanic to ensure proper diagnosis and timely resolution of the issue.