2003 CHEVROLET EXPRESS Engine Problems

MY SPEEDOMETER QUICKLY JUMPS FROM ONE INDICATED SPEED TO ANOTHER SPEED THAT IS CLEARLY INACCURATE, DOWN AS LOW AS -0- WHILE DRIVING, ACCOMPANIED BY THE TRANSMISSION ATTEMPTING TO DOWNSHIFT ON IT'S OWN, WHICH CAUSES A SEVERE ENGINE OVER-REV CONDITION OR GOING INTO A NEUTRAL MOMENTARILY WITH NO INPUT FROM ME AS THE DRIVER. THERE ARE NO SPECIFIC ACTIONS I CAN TAKE TO TRIGGER THE ERRATIC SYMPTOM, NOR ANY SPECIFIC ACTION I CAN TAKE TO CAUSE NORMAL OPERATION. WITH SNOW AND ICE ON THE ROADS AT THIS TIME OF THE YEAR THIS IS EXTREMELY DANGEROUS AS IT COULD CAUSE THE VAN TO LOCK UP THE REAR WHEELS ON SLIPPERY PAVEMENT CAUSING LACK OF CONTROL. THIS CONDITION CAN OCCUR REGARDLESS OF WHETHER OR NOT CRUISE CONTROL IS SELECTED, REGARDLESS OF THE GEAR I MANUALLY SELECT, AND REGARDLESS OF THE TRAILER MODE BEING SELECTED OR NOT. SIMULTANEOUSLY THE "CHECK ENGINE" LIGHT GOES ON,...

THIS VEHICLE WAS BOUGHT BRAND NEW BUT UNBEKNOWNST TO ME WAS MADE IN CANADA (SOMETHING WHICH WOULD NOT HAVE BEEN ACCEPTABLE TO ME HAD I BEEN TOLD). UPON POSSESSION THE WINDSHIELD MOLDING CAME OFF ON THE RIDE HOME. THE DRIVER SIDE TIEROD END WENT AT 12,000 MILES AND AGAIN AT 24,000 MILES BECAUSE UPON INSPECTION THE BALL JOINTS WERE NEVER PROPERLY TIGHTENED. THE BOLTS ON THE TRANSMISSION WERE FOUND BY THE DEALER TO HAVE BEEN NEVER PROPERLY TIGHTENED. THE SIDEDOOR HINGE HAD TO BE REPLACED AT A COST OF $600 BECAUSE IT FROZE UP AND COULD NOT BE OPENED. THE POWER STEERING UNIT RUSTED OUT AT 12,000 MILES AND STARTED LEAKING FLUID AND, WHAT I FIND MOST IMPORTANT, I AM NOT SURE IF I HAVE AIRBAGS BECAUSE THE AIRBAG LIGHT STAYS ON BUT IS NOTED TO GO OFF WHEN THE KEY IS PARTIALLY TURNED HOWEVER THE KEY CANNOT STAY IN...

FOR THE SECOND TIME IN ONE WEEK THE ENGINE RACED TO MAX RPM WITHOUT A THROTTLE INPUT. HAD TO PUT IT IN NEUTRAL TO SLOW DOWN WITH THE BRAKES. THE FIRST TIME (35MPH SLOWING DOWN FOR A RED LIGHT) WENT TO NEUTRAL, FOOT ON BRAKE AND BACK TO DRIVE, THE ENGINE RESPONDED NORMALLY. LAST NIGHT THE ENGINE RACED TO MAX RPM AGAIN 100 FEET FROM MY PARKING SPOT GOING LESS THAN 5MPH WENT TO NEUTRAL BACK TO DRIVE NO CHANGE IN ENGINE SPEED BACK TO NEUTRAL GLIDE TO PARKING SPOT TURNED ENGINE OFF. NO WARNING WHEN THE MAX ENGINE REV WOULD BEGIN, ONE WAS SLOW SPEED THE OTHER MODERATE SPEED, TEMP 75 ONE DAY, TEMP 45 YESTERDAY. WORKED FINE TODAY. WORRIED THE PROBLEM IS NOT REPEATABLE OR CAN BE FOUND USING A CODE READER. WORRIED THAT THE ONLY WAY NOW TO STOP MAX ENGINE RPM IS BY TURNING ENGINE OFF,...

MY 2003 CHEVY EXPRESS 2500 CARGO VAN WAS IN EVENING RUSH HOUR STOP AND GO TRAFFIC. AFTER REDUCING MY SPEED TO 10 MPH THEN ATTEMPTING TO ACCELERATE. THE VEHICLE STALLED AND BEGAN TO IDLE ROUGH AND SHUT-OFF. I HAD TO PUT THE VEHICLE IN NEUTRAL AND RESTART IN THE MIDDLE OF THE INTERSTATE. I HAD TO CONTINUE TO SHIFT INTO NEUTRAL AND PRESS THE GAS TO PREVENT THE VEHICLE FROM SHUTTING OFF IN THE MIDDLE OF TRAFFIC. I HAD THE PLUGS AND WIRES CHANGE THE VERY NEXT DAY AND THE PROBLEM CONTINUED. THIS COULD HAVE TURNED INTO A MAJOR ACCIDENT WITH THE VEHICLE SHUTTING OFF IN THE MIDDLE OF TRAFFIC. THIS ISSUE SHOULD BE ADDRESSED AND AN IMMEDIATE RECALL NOTICE SHOULD BE PUT INTO EFFECT TO PREVENT A MAJOR ACCIDENT WHICH COULD LEAD TO A POSSIBLE FATALITY. THIS IS DANGEROUS! I'VE RESEARCHED THIS ISSUE AND HAVE FOUND MULTIPLE CHEVY EXPRESS...