What is the reason for the sudden locking of the two rear wheels of Chevrolet Sail?

Hello, this is the rear wheel lock. Sail's rear wheels have drum brakes. After the water enters, the brake shoes of the hand brake will stick to the brake drum. The solution is as follows

1. Put the fuel filler door in the first gear and pull it open suddenly, which will easily damage the brake shoe.

2. Remove the rear wheel and hit the brake drum with a hammer.

I hope my answer is helpful to you. If you have any questions about the car, you can ask the car mechanic. 4S shop professional technician, 10 minutes to solve.