GMC Yukon XL constant squeaking noise from engine belt increases with acceleration on GMC Yukon XL

Some GMC Yukon XL owners report experiencing a constant squeaking noise from the engine belt that increases with acceleration. This noise is often traced back to the serpentine belt, which may be worn out, leading to squeaks under stress. Additionally, a bad tensioner can cause the belt to slip, resulting in squealing sounds, while issues with pulleys, such as being stuck or damaged, can also contribute to the noise. External factors like exposure to coolant or cold weather may exacerbate the problem. Owners are advised to inspect the belt for signs of wear, check the tensioner and pulleys for issues, and consider tightening the belts, as this can sometimes resolve the squeaking. Prompt attention to this noise is crucial to prevent further damage to the serpentine belt system, and if the issue persists, consulting a mechanic for a thorough inspection is recommended.