NHTSA Complaint #10825923 — 2004 CHEVROLET IMPALA

I BOUGHT MY 2004 CHEVROLET IMPALA (3800 V6 ENGINE) NEW, WHICH HAS NOW LESS THAN 12,000 MILES, & I DROVE PRIMARILY FOR RUNNING ERRANDS. ONE MONTH AGO, ITS BODY COMPUTER MEMORY WENT BONKERS. THE DAY AFTER I RETURNED AFTER XMAS, I WENT TO GET GROCERY. AS THE CAR WAS NORMAL THE PREVIOUS DAY, I DID NOT EXPECT ANY PROBLEM. HOWEVER, UPON FINISHING SHOPPING 30 MINUTES LATER, I FOUND THE CAR (1) HONKING NON-STOP, (2) ITS DOME LIGHTS COULD NOT BE TURNED OFF, (3) THE 'DOOR AJAR' WARNING JINGLED ALL THE WAY ' EVEN THOUGH I STOPPED BY ROADSIDE TO ENSURE ALL DOORS WERE CLOSED. ON TOP OF THAT, (4) THE TURNING SIGNALS (BOTH LEFT & RIGHT) STOPPED WORKING. ABOUT 5 MINUTES AFTER RETURNING HOME AND LOCKING UP THE CAR, (5) THE HONKING/DOME LIGHTS/DOOR WARNING STARTED AGAIN. ALTHOUGH I RESET THE CONTROL PANEL, THE PROBLEMS DID NOT GO AWAY. I THEREFORE TOOK THE CAR TO THE DEALER, BUT THEIR MECHANIC COULD NOT FIND THE CAUSES OFFHANDEDLY, AND AN APPOINTMENT WAS MADE TO THOROUGHLY CHECK THE CAR WITH DIAGNOSTIC INSTRUMENTS. HOWEVER, ON THE DAY OF THE APPOINTMENT (1/26/16), EVERYTHING WAS NORMAL AGAIN, AND DIAGNOSTIC TESTS COULD NOT FIND ANYTHING WRONG BY THE DEALER. TODAY (2/12/16), THE TURNING SIGNALS MALFUNCTIONED AGAIN BRIEFLY AND WORKED AGAIN, BUT (6) THE INSTRUMENT PANELS WERE ALL ERRONEOUS, WITH READINGS OF FUEL, COOLANT TEMPERATURE, TACHOMETER ABOVE LIMITS - EVEN WHEN THE CAR IS STATIONARY. I EXPECT THAT IT IS A MATTER OF TIME THAT (7) THE SPEEDOMETER WILL ALSO GO DEFECTIVE. AT THAT TIME, THE DASH BOARD WILL HAVE TO BE REPLACED AS A WHOLE, COSTING MORE THAN $500 DOLLARS. OBVIOUSLY, THE COMPUTER SYSTEM IS NOT WORKING RIGHT. I SHOULD ADD THAT MY CAR HAS BEEN MAINTAINED REGULARLY WITH THE DEALER. I HOPE MY REPORT WILL BRING NHTSA'S ATTENTION TO THE ABOVE PARTS/WORKMANSHIP PROBLEMS OF GM.