Road Noise

ABATHWA

MEMBER
CHEVROLET AVALANCHE

2002 Chevrolet Avalanche 30,000 miles. I just recently went on a long road trip. On the way back I noticed a road noise that sounded like a humming/whining noise something like extra large tires make on a vehicle. When I speed up it gets louder and when I slow down it gets softer. It even makes it while just coasting. The tire tread is good and I tried rotating them to see if it would fix it but it did no good what so ever. Do you know what this could be?

1 Reply

DENNYP

MECHANIC
1,823 POSTS

Based on the information provided, a humming or whining noise that changes with vehicle speed and is not affected by tire rotation could be attributed to a few potential causes in your 2002 Chevrolet Avalanche. Here are some possibilities to consider:

Wheel bearings: Worn or damaged wheel bearings can cause a humming or whining noise. The noise may become more pronounced as you increase speed and decrease as you slow down. A mechanic can inspect the wheel bearings and determine if they need to be replaced.

Differential issues: If the noise is coming from the rear of the vehicle, it could be related to the differential. Low or contaminated differential fluid, worn bearings, or other internal issues can lead to a humming noise. Have a professional inspect the differential and perform any necessary repairs or fluid changes.

Transmission issues: A transmission problem, such as worn gears or a failing component, could cause a whining noise. If the noise is present during coasting as well, it's possible that the issue is related to the transmission. Have a qualified mechanic inspect the transmission to identify and resolve any issues.

Exhaust system: A faulty or damaged exhaust system component, such as a muffler or exhaust pipe, could create a humming or whining noise. Inspect the exhaust system for any visible damage or leaks. If any issues are found, have the necessary repairs performed.

Other possibilities: While less likely, there are other potential causes for the noise, such as a failing wheel hub assembly, worn tires (despite good tread), or aerodynamic factors. It's best to have a professional mechanic perform a thorough inspection to accurately diagnose the source of the noise.

Given the nature of the noise and the difficulty in pinpointing the exact cause without a physical inspection, it is recommended to have a qualified mechanic inspect your 2002 Chevrolet Avalanche. They will have the necessary expertise and equipment to diagnose and resolve the issue effectively.