What Causes the Rear Wheel Noise in a Buick LaCrosse?
3 Answers
If the rear wheel of the car makes a continuous squeaking sound while driving, it is likely coming from the suspension system. The car's suspension includes components such as links, springs, shock absorbers, and stabilizer bars. Any abnormality in one of these parts, such as a loose bolt, can cause noise in the left rear wheel due to movement. The reasons for noise in the right front wheel are as follows: Severely Worn Brake Pads: When the thickness of the car's brake pads wears down to below 5mm, the braking force will noticeably decrease, and symptoms such as noise during turns may occur. In this case, the brake pads should be replaced promptly. Damaged Right Front Wheel Shock Absorber: If the shock absorber of the right front wheel is damaged, it can also cause noise. In such a situation, the car should be lifted for a detailed inspection.
I recently encountered a similar issue with my six-year-old LaCrosse - the rear wheels started squeaking noticeably, especially when going over speed bumps or making turns. The repair shop diagnosed it as worn-out stabilizer link bushings that had cracked, causing direct metal-to-metal contact and noise. The mechanic also reminded me to check other rubber components like shock absorber top mounts and spring seats, noting that Buick's suspension systems bear heavy loads, making rubber parts particularly prone to deformation and hardening. Additionally, if the noise is a constant humming sound, wheel hub bearing wear should be considered - faulty bearings produce sounds that intensify with speed. They also discovered slightly bent rear brake dust shields rubbing against the brake pads, which can create sharp metallic scraping noises. A comprehensive inspection was crucial in resolving all these issues.
As an automotive repair technician, I've encountered numerous cases of rear wheel noise in the LaCrosse. The most common issue lies in the braking system: the wear indicator on brake pads can produce a clicking sound when contacting the rotor; seized caliper guide pins causing brake drag often result in squeaking noises at low speeds. The suspension system should also be carefully inspected - worn lower control arm ball joints may produce knocking sounds on bumpy roads, while failed stabilizer bar bushings can create creaking noises during turns. Tire-related factors shouldn't be overlooked either: stones lodged in tread grooves can cause rhythmic tapping, and out-of-round tires may lead to vibration noises. I recommend owners document the specific vehicle speeds and road conditions when noises occur, as this helps technicians quickly identify the fault location.
