- Improperly lubricated suspension components. The suspension system in your Blazer contains many moving parts, such as ball joints, control arms, and sway bars. If these components are not properly lubricated, they can start to squeak when they move.
- Worn brake pads. When the brake pads on your Blazer are worn down, they can start to make a squealing noise when you apply the brakes. This is because the pads are no longer able to grip the rotors properly, causing them to vibrate and make noise.
- Damaged wheel bearings. The wheel bearings in your Blazer allow the wheels to rotate smoothly. If the bearings are damaged, they can start to make a squealing noise when the wheels are in motion.
- A loose spare tire. If the spare tire on your Blazer is not properly tightened, it can start to move around and make a squeaking noise.
- Old or damaged tires: As tires get older, they can become hard and develop small cracks in the rubber. This can cause them to squeak when they roll.
To diagnose the exact cause of the squeaky rear tires on your 2003 Chevy Blazer, you will need to inspect the suspension system, brakes, and wheel bearings. You may also need to have the tires checked by a qualified mechanic. Once the cause of the noise has been identified, you can take the necessary steps to repair it.
