2003 CHEVROLET EXPRESS Power Train 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,...

DRIVING ON INTERSTATE AT 65 MPH, THE ABS WARNING LIGHT CAME ON, AND THE SPEEDOMETER STARTED JUMPING ERRATICALLY FROM ACTUAL SPEED TO LOWER SPEEDS 45, 25 + OTHERS AS LOW AS 8 (EIGHT) MPH. THIS CAUSED THE TRANSMISSION TO DOWNSHIFT UNPREDICTABLY, OVER-REVVING THE ENGINE SPEED. IT HAPPENED REPEATEDLY SO I DOCUMENTED THE ODOMETER ERRATIC MOVEMENT ON MY CELL PHONE AS A VIDEO, SHOWING ROAD MOVEMENT + ALL GAUGES + AUDIO EVENTS LIKE ENGINE OVER-REVVING AT SAME TIME. THE VIDEO IS OF HIGH QUALITY AND THE EVENTS TAKING PLACE ARE DOCUMENTED WITH THE VIDEO. RURAL AREA WITH FEW CARS ON ROAD AT THE TIME. IF IT TOOK PLACE IN A CITY INTERSTATE ENVIRONMENT (ESPECIALLY IN THE WINTER MONTHS) IT MIGHT HAVE CAUSED A MULTIPLE CAR COLLISION WITH SUDDEN UNEXPECTED DOWNSHIFTING THAT WAS OUT OF MY CONTROL. ENGINE RPM ALSO HUNTS ERRATICALLY AND OUT OF MY CONTROL. PREDICTABLE IN WHAT IT DOES,...

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...