Running into an issue with my 94 GT brakes. Under heavy breaking the E-brake light turns on. The pedal feels like i lost power breaks. Once the car comes to a stop it turns off and pedal feel returns to normal. I've read in some places that it's an indication of low brake fluid but when I check the reservoir it's within normal levels. Has anyone else ran into this issue? I'm kind of stumped where to start wrenching.