Front brakes... But no rear brakes???
 

Almost a month ago i rebuilt my passenger side rear caliper.
Everything went smoothly and my shop teacher helped me and made sure i did everything correct.
Yesterday i took a peak to look at the discs which i had also machined and installed new HPS pads on all 4 corners.
I noticed that the fronts looked like new, where the pads bite on the disc. I then went and looked at the rears and they had rust on them (both rears). As if the rear brakes were not even working??
I don't know if this makes sense or not.
Braking feels fine. Although the other day when i was comming to a red light i applied the brakes and immediately felt the car pull a hard right. I let off the brakes and pressed them and everything was fine again.
Anyone have a clue whats going on? The E-brake works fine.

This is on a 1990 GXL BTW...
4 piston calipers upfront, and vented discs in the rear.
Thanks

First: re-bleed the brakes & look for good fluid color & flow on all corners.
Could be:
Damaged or pinched brake lines.
Bad proportioning valve.
Bad master cylinder.

Drive extra carefully until you get it fixed.
Those brakes are dangerous like they are.