NHTSA Complaint #10341649 — 2003 CHEVROLET SILVERADO 1500 HD

WHILE DRIVING AT ANY SPEED, I HEAR A CHIME FROM THE INSTRUMENT PANEL, THEN NOTICE THAT THE VEHICLE CAN NO LONGER ACCELERATE. I ALSO NOTICE THAT THE ENGINE LIGHT IS ON, AND THERE IS A MESSAGE DISPLAYED STATING THE VEHICLE IS IN "LOW ENGINE POWER MODE". AT THIS POINT, THE VEHICLE CAN STILL BE DRIVEN BUT AT VERY LOW SPEED ONLY. ANY POWER FOR MANEUVERABILITY UNDER HEAVY TRAFFIC OR HIGHWAY CONDITIONS IS GONE. AFTER PULLING OVER TO THE SIDE OF THE ROAD AND SHUTTING OFF THE ENGINE, THE ENGINE LIGHT STAYS ON BUT THE ENGINE POWER MAY HAVE RETURNED TO NORMAL (FOR A WHILE). THE FOLLOWING DAY OR SO - THE ENGINE LIGHT MAY EVEN STAY OFF, AND EVERYTHING APPEARS NORMAL. WHEN THE PROBLEM IS FIRST NOTICED, IT SEEMS TO RECUR EVERY FEW DAYS. AS TIME GOES ON HOWEVER (MAYBE 2 WEEKS) THE PROBLEM HAPPENS MORE FREQUENTLY AND IS LESS APT TO "RESET" JUST BY TURNING OFF THE ENGINE. THE FIRST TIME I TOOK THE VEHICLE INTO THE DEALER, THEY REPLACED THE THROTTLE CONTROL SENSOR CONNECTOR, FOR A TOTAL BILL OF ABOUT $350. NOW, AFTER ONLY 10 MONTH, THE PROBLEM HAS RECURRED. I TOOK IT BACK TO THE DEALER YESTERDAY, AFTER ONLY TWO OF THESE "EVENTS" WITHIN ONE WEEK, AND WAS CHARGED ANOTHER $535 TO HAVE THE THROTTLE BODY REPLACED ("FAULTY SENSORS WITHIN THE BODY"). LAST NIGHT THE PROBLEM CAME BACK AGAIN (YES - SAME DAY!). TODAY THE DEALER ADDED A "REDUNDANT" GROUND TO THE THROTTLE BODY (NO CHARGE THIS TIME). I WAS TOLD BY THE MECHANIC THAT THIS PROBLEM HAS SHOWN UP ON MANY VEHICLES LIKE MINE, AND THAT GM SEEMS TO BE AT A LOSS AS TO WHAT IS CAUSING THE PROBLEM. THIS IS AN ELECTRONIC THROTTLE CONTROL (NO DIRECT LINKAGE BETWEEN GAS PEDAL AND CARBURETOR). I AM THANKFUL THAT GM DESIGNED THIS TO FAIL WITH POWER LOSS RATHER THAN FULL POWER (TOYOTA), BUT I BELIEVE THIS IS A SAFETY CONCERN NONE THE LESS. GM IS OBVIOUSLY AWARE OF THE PROBLEM BUT IS DOING NOTHING TO REPAIR AN OBVIOUS DESIGN FLAW IN THEIR PRODUCT. *TR