NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
627 reportsClear category filterMileage unknown · Jul 17, 2014
Electrical SystemEngine And Engine Cooling
I BOUGHT MY VEHICLE AT A DEALERSHIP IN 2010. I DO NOT REMEMBER THE EXACT DATE BUT IT STARTED HAVING PROBLEMS SHORTLY AFTER. THE FIRST THING THAT HAPPENED WAS ALL MY GAUGES STOPPED WORKING EXCEPT MY SPEEDOMETER. IN 2012 I WAS DRIVING AND AT TWO DIFFERENT OCCASIONS WITHIN A DAY APART, WHILE I WAS TURNING INTO A PARKING LOT OR GAS …
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I BOUGHT MY VEHICLE AT A DEALERSHIP IN 2010. I DO NOT REMEMBER THE EXACT DATE BUT IT STARTED HAVING PROBLEMS SHORTLY AFTER. THE FIRST THING THAT HAPPENED WAS ALL MY GAUGES STOPPED WORKING EXCEPT MY SPEEDOMETER. IN 2012 I WAS DRIVING AND AT TWO DIFFERENT OCCASIONS WITHIN A DAY APART, WHILE I WAS TURNING INTO A PARKING LOT OR GAS STATION, MY VEHICLE WOULD SHUT OFF. I TOOK IT TO AUTO ZONE TO HAVE ONE OF THOSE FREE TESTS DONE AND NOTHING WAS SHOWING UP AS ABNORMAL. AROUND 2013 MY VEHICLE STARTED MAKING A REAL HIGH PITCH SQUEALING SOUND DURING START UP AND WHILE DRIVING. I TOOK MY CAR INTO SINCE IT NEEDED A NEW WATER PUMP AND THEY SAID THAT THE HIGH PITCH SOUND COULD BE FIXED BUT WASN'T A SAFETY CONCERN. IN 2014 JUST A FEW MONTHS AGO, AGAIN I WAS PULLING INTO A GAS STATION AND MY VEHICLE TURNED OFF. I WAS ABLE TO TURN IT BACK ON AND HAVE ENOUGH TIME TO PULL INTO A SPOT BEFORE IT SHUT OFF AGAIN. THIS TIME IT WOULDN'T START MY KEYS WERE STUCK IN THE IGNITION AND IT COULD NOT BE JUMP STARTED. AFTER TAPING THE BATTERY THE KEYS CAME OUT OF THE IGNITION. IT STARTS NOW BUT NONE OF THE ELECTRICAL INSIDE THE VEHICLE WORKS. AT THIS POINT IT'S NOT DRIVABLE BECAUSE OF THE TEMPERATURE OUTSIDE AND THE FACT THAT I CAN'T ROLL DOWN MY WINDOWS AND THE AIR BLOWS ONLY HOT. THE STEREO DOESN'T WORK, THE SEATS TO MOVE FORWARD AND BACK DO NOT WORK. THE BACK BRAKE LIGHTS WORK BUT THE TAIL LIGHTS WHILE DRIVING DO NOT WORK. THE FRONT HEADLIGHTS WORK. *TR
NHTSA ODI #10611262
128,000 miles · Jul 14, 2014
Electrical SystemFire
TRUCK CUT OFF WHILE IN PARK. SMELT BURNING SMELL, AND NOTICED SMOKE COMING FROM UNDER THE HOOD. SOMEONE RAISED THE HOOD AND NOTICED THE COMPUTER ELECTRICAL BOX WAS BURNING. THE COVER WAS MELTED THROUGH FROM THE BURNING. THE VEHICLE WAS OFF AND THEN STARTED BACK UP ON IT'S OWN. SECURITY LIGHTS IN DASH CAME ON. VEHICLE COULD …
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TRUCK CUT OFF WHILE IN PARK. SMELT BURNING SMELL, AND NOTICED SMOKE COMING FROM UNDER THE HOOD. SOMEONE RAISED THE HOOD AND NOTICED THE COMPUTER ELECTRICAL BOX WAS BURNING. THE COVER WAS MELTED THROUGH FROM THE BURNING. THE VEHICLE WAS OFF AND THEN STARTED BACK UP ON IT'S OWN. SECURITY LIGHTS IN DASH CAME ON. VEHICLE COULD NOT BE DRIVEN. I READ ON GOOGLE WEBSITE THAT SOME VEHICLES HAD RECALLS FOR ELECTRICAL PROBLEMS. A CHEVROLET PLACE IN LYNCHBURG VA TOLD THE SERVICE DEPARTMENT WHERE I PURCHASED THE VEHICLE THAT THERE WERE NO RECALLS. THAT IS NOT WHAT I READ ON THE INTERNET. ME AND MY DAUGHTER AND 3 OTHERS COULD HAVE DIED IF THIS VEHICLE HAD OF EXPLODED. I WOULD REALLY APPRECIATE SOME HELP IN THIS MATTER. THANKS *TR
NHTSA ODI #10610253
20,000 miles · Jul 7, 2014
Electrical SystemVehicle Speed Control
INSTRUMENT CLUSTER STARTED GOING BAD IN 2006 AND EVERY YEAR ANOTHER GAUGE IS FAULTY - FIRST IT WAS THE GAS GAUGE, NEXT THE OIL, ETC AND 4 YEARS AGO THE SPEEDOMETER STARTED STICKING. I TALKED TO THE DEALER AND THEY WANTED $800 TO FIX IT. I HAVE RESEARCHED AT THE TIME AND THIS IT IS A VERY COMMON COMPLAINT. THIS SHOULD HAVE BEEN R…
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INSTRUMENT CLUSTER STARTED GOING BAD IN 2006 AND EVERY YEAR ANOTHER GAUGE IS FAULTY - FIRST IT WAS THE GAS GAUGE, NEXT THE OIL, ETC AND 4 YEARS AGO THE SPEEDOMETER STARTED STICKING. I TALKED TO THE DEALER AND THEY WANTED $800 TO FIX IT. I HAVE RESEARCHED AT THE TIME AND THIS IT IS A VERY COMMON COMPLAINT. THIS SHOULD HAVE BEEN RECALLED. I HAVE COMPLAINED ABOUT IT FOR YEARS AND EVEN CALLED GM - NO HELP AND I DON'T HAVE THE MONEY TO REPAIR THIS. I WOULD APPRECIATE HELP WITH THIS AND FEEL THAT GM HAS KNOWN THAT THIS IS AN ISSUE. I DRIVE A LOT OF KIDS IN MY CAR AND I AM AFRAID THAT ONE DAY THIS IS REALLY GOING TO BE A PROBLEM. *JS
NHTSA ODI #10608486
140,000 miles · Jul 1, 2014
Electrical System
I WAS DRIVING ALONG ON THE HIGHWAY AND DOING THE SPEED LIMIT. I HIT TRAFFIC AND CHECKED MY CHECK MY GAS GAUGE AND NOTICED THAT MY SPEEDOMETER WAS READING 120 AT FULL STOP. I TURNED OFF AND THEN BACK ON THE TRUCK AND THE SPEEDOMETER STILL PINNED AT 120. THIS IS A MAJOR SAFETY ISSUE AND THEY NEED TO ADDRESS IT. I CALLED CHEVY AND …
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I WAS DRIVING ALONG ON THE HIGHWAY AND DOING THE SPEED LIMIT. I HIT TRAFFIC AND CHECKED MY CHECK MY GAS GAUGE AND NOTICED THAT MY SPEEDOMETER WAS READING 120 AT FULL STOP. I TURNED OFF AND THEN BACK ON THE TRUCK AND THE SPEEDOMETER STILL PINNED AT 120. THIS IS A MAJOR SAFETY ISSUE AND THEY NEED TO ADDRESS IT. I CALLED CHEVY AND THEY SAID THAT THERE IS NOTHING THEY CAN DO, BUT CHARGE ME 900 FOR A NEW DASH CLUSTER. *TR
NHTSA ODI #10607399
108,000 miles · Jul 1, 2014
Electrical SystemEngine
MANY TIMES WHILE DRIVING THIS SUV, THE ENGINE HAS JUST SHUT OFF. IT WILL START RIGHT BACK UP. HOWEVER IT IS SCARY AND WE HAVE TRIED TO FIGURE THIS OUT FOR QUITE SOME TIME NOW. THE WORST TIME WAS WHEN I WAS GETTING ON A BUSY INTERSTATE AND THE CAR CUT OFF. I DON'T KNOW IF THE VEHICLE WAS DOING THIS PRIOR TO OUR PURCHASE. I…
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MANY TIMES WHILE DRIVING THIS SUV, THE ENGINE HAS JUST SHUT OFF. IT WILL START RIGHT BACK UP. HOWEVER IT IS SCARY AND WE HAVE TRIED TO FIGURE THIS OUT FOR QUITE SOME TIME NOW. THE WORST TIME WAS WHEN I WAS GETTING ON A BUSY INTERSTATE AND THE CAR CUT OFF. I DON'T KNOW IF THE VEHICLE WAS DOING THIS PRIOR TO OUR PURCHASE. I CAN NOT GET ANY INFORMATION FROM CARMAX IN REGARD TO THIS. IT IS WELL MAINTAINED AND DUE TO THIS, I RARELY TAKE IT OUT ON THE ROAD ANYMORE. *TR
NHTSA ODI #10607282
40,000 miles · Jun 30, 2014
Electrical System
BEGINNING WITH THE TACHOMETER IN 2011, THE REMAINING GAUGES ON THE INSTRUMENT PANEL CLUSTER HAVE PROCEEDED TO STOP WORKING OVER THE NEXT TWO PLUS YEARS TO THE POINT THAT NONE OF THEM WORK ANYMORE (INCLUDING THE SPEEDOMETER). WE HAVE NO IDEA HOW FAST WE ARE DRIVING NOR DO WE KNOW THE STATUS OF OUR FUEL LEVEL. *TR
NHTSA ODI #10606882
100,000 miles · Jun 29, 2014
Electrical SystemEquipment Adaptive/mobilityExterior Lighting
THE DASH CONTROL PANEL HAS STOPPED WORKING OR ONLY CERTAIN ITEMS SHOWING SPEED, TEMP AND OIL PRESSURE WORK ON OCCASION. AFTER SEARCHING ONLINE FOR REPAIR OPTIONS THERE ARE A NUMBER OF COMPLAINTS FOR THE SAME PROBLEMS FOR THIS SPECIFIC VEHICLE. *TR
NHTSA ODI #10606835
75,000 miles · Jun 26, 2014
Electrical SystemLatches/locks/linkages
I PURCHASED MY 2004 TRAILBLAZER OF THE ORIGINAL OWNER WITH 35000 MILES ON THE SPEEDOMETER. AT 75000 MILES THE DOOR LOCKS STARTED CLICKING AS IF LOCKING AND UNLOCKING. I TOOK IT TO A CHEVY DEALER AND THE MECHANIC SAID IT WAS DEFINITELY STRANGE AND I WOULD NEED TO MAKE AN APPOINTMENT TO HAVE THEM LOOK AT IT. JUST HIM SAYING DEFINI…
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I PURCHASED MY 2004 TRAILBLAZER OF THE ORIGINAL OWNER WITH 35000 MILES ON THE SPEEDOMETER. AT 75000 MILES THE DOOR LOCKS STARTED CLICKING AS IF LOCKING AND UNLOCKING. I TOOK IT TO A CHEVY DEALER AND THE MECHANIC SAID IT WAS DEFINITELY STRANGE AND I WOULD NEED TO MAKE AN APPOINTMENT TO HAVE THEM LOOK AT IT. JUST HIM SAYING DEFINITELY STRANGE TO MY EARS SAID EXPENSIVE. MY SISTER HAD THE SAME VEHICLE DIFFERENT COLOR AND HERS HAD THE SAME PROBLEM. NOW HOW STRANGE IS THAT? I BROKE THE APPOINTMENT AND GOT USED TO THE CLICKING. SOMETIMES IT WOULD STOP FOR A WEEK OR SO AND CLICK SOME MORE. THE CLICKING WAS LOUD AS IF YOU COULD IMAGINE THE SOUND WHEN YOU LOCK ALL THE DOORS WITH ONE CLICK. CLICK CLICK CLICK CLICK EVERY HALF MINUTE OR SO. THEN THE TACHOMETER WENT NUTS. SOMETIMES IT WORKED SOMETIMES IT DIDN'T. SAME WITH THE GAS GAGE, OIL PRESSURE, TEMP GAGE AND BATTERY. ONCE THE WIPERS WOULDN'T COME ON WHILE BEING CAUGHT IN A RAIN STORM. THE STARTED WORKING AGAIN ABOUT 15 MILES LATER. NOW THE ELECTRIC DOOR LOCKS ARE ACTING UP SETTING OFF THE ALARM. I NO LONGER LOCK THE DOORS DUE TO THE ALARM GOING OFF FOR NO REASON. DEACTIVATING THE ALARM CAN BE A CHORE AS PUSHING THE CORRECT BUTTON TO SHUT IT UP ONLY WORKS AFTER PUSHING IT A FEW TIMES. WE HAVE CHECKED FOR PINCHED WIRES AND CHECKED THE FUSES TO NO AVAIL. WITHOUT THESE ELECTRICAL PROBLEMS I WOULD BE ONE HAPPY CUSTOMER! *TR
NHTSA ODI #10606272
185,000 miles · Jun 13, 2014
Electrical SystemExterior LightingVisibility
I BOUGHT THIS CAR ABOUT 4 YEARS AGO AND IT HAS BEEN NOTHING BUT AN ELECITRICAL MESS. FIRST MY HEAD LIGHTS WOULD GO OUT ONCE A MONTH, THEN A COUPLE TIMES A MONTH, THEN ONCE A WEEK. MY BRAKE LIGHTS STARTED DOING THE SAME. OUR FAMLIY MECHHANIC COULDN'T FIGURE IT OUT, HE JUST KEPT REPLACING THEM AND SENDING THE BAD BULBS IN FOR W…
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I BOUGHT THIS CAR ABOUT 4 YEARS AGO AND IT HAS BEEN NOTHING BUT AN ELECITRICAL MESS. FIRST MY HEAD LIGHTS WOULD GO OUT ONCE A MONTH, THEN A COUPLE TIMES A MONTH, THEN ONCE A WEEK. MY BRAKE LIGHTS STARTED DOING THE SAME. OUR FAMLIY MECHHANIC COULDN'T FIGURE IT OUT, HE JUST KEPT REPLACING THEM AND SENDING THE BAD BULBS IN FOR WARRANTY. A COUPLE TIMES THE PIGTAILS AND LAMPS HAD TO BE REPLACES. ALSO 3 SEPERATE OCCASIONS BOTH HEADLIGHTS WENT OUT AT ONCE WHILE DRIVING. AND I HAD TO DRIVE HOME IN THE DARK WITH NO HEAD LIGHTS ON. I TOOK IT THE CHEVY DEALERSHIP AFTER THE THIRD TIME ABD APPARENTLY MY FUSE BOX WAS MELTED AND NEEDED TO BE REPLACED. SPENT OVER 1000.00 DOING THAT AND IT WORKED OKAY FOR ABOUT A YEAR. THEN HEADLIGHTS STARTED GOING OUT AGAIN AND BRAKE TLIGHTS AS WELL. NOT ONCE A WEEK, BUT STILL ABOUT ONCE A MONTH OR EVERY OTHER MONTH. RECENTLY MY DRIVERS WINDOW STOPPED WORKING AND I COULDN'T CONTROL THE MASTER SWITCH TO LOCK MY CAR OR ROLL UP MY WINDOWS. THE CLUSTER PANEL IN THE DOOR NEEDED TO BE REPLACED. ALSO, HAD TWO SENSORS THAT NEEDED TO BE REPLACED BECAUSE MY 4 WHEEL DRIVE, PARKING BRAKE, AND CRUSIE CONTROL WOULD STOP WORKING ALL AT ONCE AND THE LIGHTS WOULD BE LIT UP ON THE DASHBOARD. I WASNT' ABLE TO USE ANY OF THEM UNTIL THE SENSOR WAS REPLACED. ALSO THE POWER SHORTED OUT IN MY SIDE MIRROS, SO I CAN'T ADJUST THE MIRRORS WITH THE CONTROL OR THEY START TILITING BACK AND FORTH LIKE CRAZY ON THEIR OWN. I HAVE TO GET OUT OF THE CAR AND ADJUST THEM MANUALLY. GM NEEDS TO DO A RECALL, THIS CAR IS NOT SAFE AND I WILL NOT BE BUYING A GM CAR WHILE I LOOK FOR A NEW CAR SOON. *JS
NHTSA ODI #10598123
168,000 miles · May 21, 2014
Electrical SystemEngine
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT AFTER POWERING OFF, THE VEHICLE FAILED TO RESTART. AFTER NUMEROUS ATTEMPTS, THE VEHICLE WAS ABLE TO RESTART. THE VEHICLE WAS NOT TAKEN TO A DEALER OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 168,000.
NHTSA ODI #10593007
NHTSA investigations
4RQ17002 · Loss Of Headlights
Opened Apr 24, 2017 · Closed Mar 29, 2021
Status: closed (inferred from source dates) · Exterior Lighting:headlights
The subject vehicles are model year (MY) 2002-2009 Chevrolet Trailblazer, GMC Envoy, 2004-2007 Buick Rainier, 2003-2008 Isuzu Ascender, 2005-2009 Saab 9-7X, 2002-2004 Oldsmobile Bravada, 2003-2006 Chevrolet SSR, 2005-2009 Buick Lacrosse, and 2006-2008 Pontiac Grand Prix. This scope includes the Trailblazer/Envoy variants: 2002-2006 Envoy XL/Trailblazer EXT and 2004-2005 Envoy XUV. The original scope of this investigation was expanded to include all vehicles equipped with the subject Headlight Driver Module (HDM). The focus of the investigation was to determine whether actions performed by General Motors adequately addressed any unreasonable risk to motor vehicle safety in the subject vehicles concerning the headlights and the HDM that controls them.Under normal electrical load and environmental conditions, the HDM can overheat inside the Underhood Electrical Center (UEC). This can cause the module to fail and result in a simultaneous loss of both low beam headlights and both daytime running lights (DRLs), often with no warning or prior detectability to the driver. This failure can be intermittent or permanent. No other exterior lights are affected. High beams, turn signals, brake lights, and reverse lights are still operational.General Motors addressed this issue with 2 recalls (14V755 & 15V519) and a special coverage program (N172091910). In view of the recalls and special coverage program implemented by GM and the vehicle high beams continuing to operate, ODI has tentatively concluded that the actions taken by GM mitigate any unreasonable risk to safety posed by HDM failure in the subject vehicles.Accordingly, the investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
EA07009 · Fuel Pump Module Leaks Gasoline
Opened Jul 10, 2007 · Closed Aug 28, 2008
Status: closed (inferred from source dates) · Fuel System, Gasoline:delivery:fuel Pump
DURING THE COURSE OF THIS EA INVESTIGATION, ODI OBSERVED THAT THE MAJORITY OF THE COMPLAINTS (88%) AND WARRANTY CLAIMS (94%) WERE REPORTED FOR VEHICLES THAT ARE REGISTERED FOR USE IN THE SALT BELT REGION OF THE US.THIS AREA INCLUDES 20 STATES IN THE NORTHEAST, MID ATLANTIC AND THE MIDWEST REGIONS AND THE DISTRICT OF COLUMBIA.CONSUMERS IN THE SALT BELT REGION REPORTED TO ODI THAT THEY COULD SMELL FUEL VAPORS IN THEIR VEHICLES WHILE DRIVING.UPON FURTHER EXAMINATION OF THEIR VEHICLES, THEY DISCOVERED THAT FUEL VAPORS WERE COMING OUT OF THE TOP OF THE FUEL TANK. THIS CONDITION IS CAUSED BY CORROSION OF THE RETURN AND SENDER LINES OF THE FUEL PUMP MODULE.WATER AND ROAD SALT COLLECT ON TOP OF THE FUEL PUMP LEADING TO SMALL PINHOLES APPEARING ON THE FUEL LINES.FUEL MAY LEAK AND COLLECT ON TOP OF THE MODULE AND/OR SPILL ONTO THE GROUND.THE DATA EVALUATED UNDER THIS INVESTIGATION REFLECT A RELATIVELY LOW FREQUENCY OF OCCURRENCE THAT LARGELY ARISES IN SALT BELT STATES.GM HAS EXTENDED THE WARRANTY ON THE SUBJECT COMPONENT TO TEN YEARS OR 120,000 MILES.FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED AT THIS TIME; ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.FOR ADDITIONAL INFORMATION SELECT DOCUMENT SEARCH.
EA04021 · Brake Lamp Failure
Opened Aug 3, 2004 · Closed Nov 4, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
GM STATES THAT SOME BRAKE/TAIL LAMP BULBS CAN PREMATURELY BECOME INOPERATIVE DUE TO MALFUNCTIONING BRAKE/TAIL LAMP SOCKETS.ON MARCH 2, 2004, GM INITIATED A 6-YEAR/72,000 MILE SPECIAL POLICY FOR 989,487 SUBJECT VEHICLES TO INSPECT AND REPLACE THE REAR BRAKE/TAIL LAMP BULB SOCKET ASSEMBLIES.ON APRIL 4, 2004, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION (PE04-032) BASED ON CONSUMER COMPLAINTS ALLEGING BRAKE LIGHTS NOT OPERATING WHEN THE BRAKE PEDAL IS DEPRESSED.ON AUGUST 3, 2004 ODI UPGRADED PE04-032 TO AN ENGINEERING ANALYSIS (EA04-021).BY LETTER DATED OCTOBER 27, 2004 GM NOTIFIED NHTSA THAT IT WILL CONDUCT A SAFETY RECALL (NHTSA # 04V527) COVERING SUBJECT VEHICLES THAT WERE NOT ALREADY REPAIRED UNDER GM'S SPECIAL POLICY.MY 2004 SUBJECT VEHICLES BUILT AFTER AUGUST 8, 2003 CONTAIN IMPROVED BRAKE LAMP ASSEMBLIES AND ARE NOT INCLUDED IN THE RECALL.GM DEALERS WILL INSTALL THE IMPROVED BRAKE LAMP ASSEMBLY ON SUBJECT VEHICLES BUILT ON AUGUST 8, 2003 AND EARLIER.THE ACTION TAKEN BY GM IS SUFFICIENT TO RESOLVE THE ISSUES RAISED BY THIS INVESTIGATION.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.
PE04032 · Brake Lamp Failure
Opened Apr 6, 2004 · Closed Aug 3, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION ON MODEL YEAR (MY) 2002-04 CHEVROLET TRAILBLAZER VEHICLES.GM REPORTS THAT OTHER VEHICLES SHARING THIS PLATFORM AND BRAKE LAMP DESIGN ARE THE MY 2002-2004 CHEVROLET TRAILBLAZER EXT; GMC ENVOY, XL, XUV; OLDSMOBILE BRAVADA AND 2004 BUICK RAINIER.COMPLAINTS ALLEGE THAT THE REAR BRAKE LAMP DOES NOT OPERATE WHEN THE BRAKE PEDAL IS DEPRESSED.THERE IS NO INDICATION TO THE DRIVER FROM INSIDE THE VEHICLE THAT ONE OR MORE BRAKE LAMPS BULBS ARE NOT FUNCTIONING.GM FOUND THAT HEAT FROM THE BULB COULD DEFORM THE LAMP SOCKET, PRODUCE ELECTRICAL ARCING AND AN INOPERATIVE BULB.TO CORRECT THE CONDITION, GM CHANGED THE BULB TO A BULB THAT TRANSMITS LESS HEAT TO THE SOCKET AND CHANGED THE SOCKET TO A THERMOPLASTIC POLYMER TO IMPROVE THERMAL STABILITY.THESE CHANGES WERE IMPLEMENTED INTO PRODUCTION VEHICLES ON OCTOBER 1, 2003.GM IMPLEMENTED A SPECIAL POLICY BY NOTIFYING CONSUMERS THAT IF THEY SHOULD EXPERIENCE A BRAKE LAMP FAILURE TO GO TO THEIR GM DEALERSHIP TO HAVE THE CIRCUIT BOARD CONTAINING THE BRAKE LAMP REPLACED ALONG WITH NEW BULBS.THIS POLICY IS GOOD FOR THE FIRST 6 YEARS OR 72,000 MILES OF THE LIFE OF THE VEHICLE.ODI WILL UPGRADE THIS INVESTIGATION TO EA 04-021 AND INCLUDE THE ABOVE MENTIONED VEHICLES.
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