96 9c1 Electrical Issue

I HAVE A INTERMITANT PROBLEM ON MY 96 9C1 LT1 FORMER COP CAR. I BOUGHT IT WITH ONLY 72k AND THIS PROBLEM HAS ABSOLUTLY KILLED THE CAR IT HAPPENS LIKE ONCE A MONTH AND LEAVES ME STRANDED RANDOM PLACES FOR RANDOM AMOUNTS OF TIME. IT DEALS WITH THE BRAKE PEDAL AND THE DASH AND RUNNING/STARTING OF THE ENGINE.

WHEN THE CAR IS MALFUNCTIONING THE TAIL LIGHTS DONT WORK AT ALL AND THE CAR WILL CRANK BUT NOT TURN OVER. IT SOMETIMES STARTS IN NEUTRAL BUT WONT GO INTO DRIVE OR REVERSE WITHOUT DYING. THE GAS GAUGE IS ALWAYS STUCK ON FULL WHEN THE CAR IS MESSED UP AND WHEN IT DOES START THE CAR WILL IDLE BAD AND SPUTTER UNTIL IT DIES. THE DIGITAL DASH ALSO FLIPS OUT IN CORRELATION WITH THE BRAKE PEDAL BEING PRESSED. THIS PROBLEM IS DIRECTLY RELATED TO THE BRAKE AND THE DASH ELECTRICAL SYSTEM BUT I DONT UNDERSTAND HOW THE PROBLEM CAN IMPAIR THE ENGINE SO BADLY. WHEN THE DASH GOES BACK TO NORMAL IT THEN RUNS FINE.

THIS IS THE BEST CAR IVE EVER OWNED WITH THE WORST PROBLEM. 2 MECANICS COULD NOT FIND THE PROBLEM SO I NEED ALL OF YOUR HELP. IT ISNT RELATED TO THE ALTERNATOR TO MY KNOWLEDGE. AND I HAVE SPENT A TON OF MONEY TUNNG UP THE LT1 TO NEAR PERFECT SHAPE THE CAR WAS BOUGHT IN NEAR PERFECT SHAPE AND WAS TAKEN GOOD CARE OF BY THE POLICE DEPARTMENT.

THANKS, JERRY

it could be anything, taking it to a shop is probaly your best bet

wow, does the engine run when you hold down the brake pedal during its malfunctioning spell?

when the car is acting up it wont start with or without the brake pedal being pressed. but when i press the brake the digital dash flickers and turns off. very odd.