back wheels lock up going backwards but are fine going forward. What could be the problem?

Car is a 1999 Malibu

thebax20062018-09-30T11:28:07Z

The parking brake shoes inside the back rotors have had the shoe material separate drum the metal shoes and is binding inside the rotor.

Anonymous2018-09-29T21:27:53Z

You probably have drum brakes in the rear. They 'adjust' themselves when you drive backwards, IF they are working right. IF they are not 'working right', the rear wheels will lock-up. Take the tires & the drums off & look for a broken coil spring ...................

L.N.2018-09-29T21:27:42Z

Broken brake shoe return springs.