What size in the front wheel bearing hub nut on a 2001 Chevy blazer?

The size of the front wheel bearing hub nut on a 2001 Chevy Blazer depends on whether it has a 4x4 or 2x4 drivetrain and which specific axle components were used. There isn't a single definitive answer. The nut size can be either 30mm or 32mm.

To be certain, you should:

* Consult your owner's manual: This is the most reliable source for your specific vehicle.

* Check the nut itself: If you can access the nut, use a socket wrench set and try different sizes until you find the one that fits perfectly. Start with a 30mm and then try a 32mm if necessary.

* Check a parts store online or in person: Provide them with your Blazer's VIN (Vehicle Identification Number) to ensure you get the correct part. They can tell you the correct nut size.

Do not attempt to remove the nut without the proper tools and knowledge. Improper removal can damage the bearing or other components.