2007 CHEVROLET AVALANCHE Fuelpropulsion System Problems

TWO WEEKS AGO DRIVING 60MPH ON HIGHWAY IN SNOW ENGINE LIGHT ILLUMINATES AND LOSE TOTAL POWER. "REDUCE POWER MODE" ILLUMINATED BUT ENGINE SHUT OFF. WE ALMOST GOT REAR ENDED BY A TRACTOR TRAILER ON [XXX]. ON SIDE OF ROAD FOR 2 HRS IN 20 DEGREE WEATHER WAITING ON AAA (NO SHOULDER ON HWAY) AND MOTOR STARTS. TAKE IT TO GARAGE AND GET THROTTLE POSITION SENSOR (TPS) CODE ANS STABILITRAK/ABS CODE. WE HAD ACCIDENTALLY HIT THE ONSTAR BUTTON A MINUTE BEFORE THIS AND MECHANIC THOUGHT THAT WAS RELATED SO HE CLEARED CODE AND SENT US ON OUR WAY. FOR TWO WEEKS WE WERE GOOD ANDIT HAPPENED AGAIN ON HIGHWAY IN RAIN [XXX] THIS WEEKEND, AGAIN IN MIDDLE OF HIGHWAY. THIS TIME CAR STARTED AFTER FIVE MINUTES. TOOK CAR TO DEALER AND THEY STATE THE TPS NEEDS REPLACING AND FRONT WHEEL SPEED SENSOR BROKEN. THERE IS A GM SERVICE BULLETIN #11273B WHERE...

I STARTED SMELLING GAS AND THAT WENT ON FOR 2 MONTHS NOW AT A IDLE YOU CAN SEE FUEL DRIPPING OFF THE FUEL TANK COMING FROM THE TOP OF THE FUEL TANK. I BELIEVE THE METAL LIINE HAVE RUSTED.

THE VEHICLE IS EQUIPPED WITH THE ABILITY TO HANDLE FLEX FUEL AFTER YOU RUN THE FLEX FUEL THEN SWITCH BACK TO UNLEADED THE FUEL PUMP IS DAMAGED, I'VE SPOKEN TO OTHER OWNERS THAT OWN AN AVALANCHE SAME MODEL YEAR AND THEY ARE EXPERIENCING THE SAME ISSUE BUT GM IGNORES THIS. CAN YOU OFFER ANY FEED BACK FOR THIS ? IF SO THANKS. *JS