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2005 Chevrolet Trailblazer

Owner reports · Recalls · Investigations

More warning signs than most Trailblazer years

Owner complaints for the 2005 Chevrolet Trailblazer are substantially higher than the model-year median of 87.5.

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When problems were reported

Mileage at the reported incident

1,220 reports with mileage · 246 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Electrical System. Review the 617 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel System, Gasoline. Review the 435 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Exterior Lighting. Review the 140 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

59 crash reports25 fire reports41 injury reports

Fuel System, Gasoline complaints

435 reports
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108,400 miles · May 25, 2013
Fuel System, Gasoline

FUEL GAUGE READS EMPTY WHEN CAR IS FILLED AND THE NEEDLE ONLY MOVES A LITTLE..I NEVER CAN TELL HOW MUCH GAS THERE IS. *TR

NHTSA ODI #10513500

Mileage unknown · May 14, 2013
Electrical SystemEngineFuel System, Gasoline

2005 CHEVROLET TRAILBLAZER. CONSUMER WRITES IN REGARDS TO VEHICLE FUEL GAUGE SENSOR ISSUES. *SMD THE CONSUMER STATE THE FIRST TIME THE FUEL GAUGE STARTING ACTING ERRATIC WAS IN 2007. THE DEALER INFORMED HIS WIFE, THE VEHICLE HAD RAN OUT OF GAS, EVEN THOUGH THE GAUGE INDICATED THERE WAS 1/2 TANK OF GAS. THE CONSUMER STATED HE …

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2005 CHEVROLET TRAILBLAZER. CONSUMER WRITES IN REGARDS TO VEHICLE FUEL GAUGE SENSOR ISSUES. *SMD THE CONSUMER STATE THE FIRST TIME THE FUEL GAUGE STARTING ACTING ERRATIC WAS IN 2007. THE DEALER INFORMED HIS WIFE, THE VEHICLE HAD RAN OUT OF GAS, EVEN THOUGH THE GAUGE INDICATED THERE WAS 1/2 TANK OF GAS. THE CONSUMER STATED HE CONTINUES TO EXPERIENCE AN ERRATIC BEHAVIOR OF THE FUEL PUMP AND THE LOW FUEL INDICATOR LIGHT ILLUMINATED. THE LATEST PRELIMINARY DIAGNOSIS WAS THE VEHICLE WAS UNABLE TO SUSTAIN AN IDLE, BECAUSE OF THE ERRATIC FUEL PRESSURE (FUEL PUMP). THE CONSUMER ALSO STATED THE VEHICLE HAS ELECTRICAL PROBLEMS AND THE OIL PRESSURE GAUGE WAS INOPERATIVE.

NHTSA ODI #10511098

26,000 miles · Apr 6, 2013
Electrical SystemEngineFuel System, Gasoline

PURCHASED 11/24/2008 ~20K MILES. WITHIN 5MONTHS A WHOLE HOST OF ISSUES STARTED, THE 1ST BEING THE FUEL GAUGE NOT WORKING BY SHOWING FULL & ACTUALLY NOT (RAN OUT OF GAS TWICE) AND THEN SHOWING EMPTY AFTER FILLUP. 1WEEK LATER THE ENGINE LIGHT CAME ON & THE INSTRUMENT PANEL STOPPED WORKING. ~ ONE YEAR LATER, DEC 2009 THE SPEEDOM…

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PURCHASED 11/24/2008 ~20K MILES. WITHIN 5MONTHS A WHOLE HOST OF ISSUES STARTED, THE 1ST BEING THE FUEL GAUGE NOT WORKING BY SHOWING FULL & ACTUALLY NOT (RAN OUT OF GAS TWICE) AND THEN SHOWING EMPTY AFTER FILLUP. 1WEEK LATER THE ENGINE LIGHT CAME ON & THE INSTRUMENT PANEL STOPPED WORKING. ~ ONE YEAR LATER, DEC 2009 THE SPEEDOMETER FLUCTUATED FROM WORKING PROPERLY TO ~50-55MPH BASE INSTEAD OF 0. AFTER A FEW DAYS, THE SPEEDOMETER DID ZERO-OUT BUT THEN DID NOT SHOW ANY SPEED BUT STAYED AT 0. ALONG WITH THE SPEEDOMETER ISSUE ARE THE HEADLIGHTS DIMMING SPORADICALLY. ALL OF THE ISSUES HAVE CONTINUED ON-OFF SINCE. MARCH 2012 THE WINDSHIELD RESERVOIR STARTED LEAKING/CRACKED. FEBRUARY 2013 HAD TUNEUP, BRAKES, AND THERMOSTAT REPLACED AND SINCE THEN ADD FRONT VENTS STOPPED WORKING PLUS SEVERE, SPORADIC, HIGH IDLE - DRIVING TO WORK (METROPOLITAN, DOWNTOWN, CAPITAL OF STATE-HIGH RUSH HOUR) THE HIGH REV STARTED AND ALL I WANTED WAS TO GET TO WORKPLACE PARKING LOT ~2MILES. 2BLCKS FR PKG LOT, I WAS BRAKING AT A LEFT, DBLTURN LIGHT WITH THE REV & BRAKES GRABBINGH/COUNTERACTING. I COME TO A FULL STOP BUT MY SUV REVS TO OVER 3RPMS & I THOUGHT THE TRBLZR WOULD BREAK FREE & CRASH INTO THE CARS IN FRONT OF ME! I HAVE A "CHRISTINE" CAR AND HATE THE FEELING OF DRIVING AN UNSAFE VEHICLE THAT CHEVY WON'T RECALL/FIX AND I CAN'T AFFORD TO BUY ANYTHING ELSE CURRENTLY OR GET ALL THESE ISSUES REPAIRED. I PLACE MINE, MY KIDS AND PASSENGERS' LIVES & SAFETY INTO JEOPARDY EVERY TIME WE GET IN TO DRIVE/RIDE. I ONLY HAVE 78K MILES AND 1YR OF CAR PYMNTS LEFT. I WILL NEVER BUY ANOTHER CHEVY AGAIN AND I WAS A DIEHARD CHEVY AND "BUY AMERICAN" CONSUMER. THIS VEHICLE IS A PIECE OF JUNK. MY NEXT PURCHASE WILL BE ANY VEHICLE THAT IS SAFE, WHOEVER THE MANUFACTURER MAY BE. CAN ANYTHING BE DONE TO HELP??? *TR

NHTSA ODI #10507369

60,000 miles · Feb 10, 2013
Electrical SystemFuel System, Gasoline

THE FUEL GAUGE READS EMPTY WHEN THERE IS PLENTY OF GAS IN THE TANK. IT SOMETIMES READ FULL WHEN THERE IS LITTLE GAS LEFT. *TR

NHTSA ODI #10497677

55,500 miles · Jan 12, 2013
Fuel System, Gasoline

2005 TRAILBLAZER EXT, 55500 MILES, BOUGHT NEW. IN JANUARY 2013 I FILLED UP MY GAS TANK. WITHIN ONE BLOCK OF LEAVING THE GAS STATION THE FUEL GAUGE WENT TO 0 (EMPTY). THEREAFTER, THE GAUGE READS INTERMITTENTLY BETWEEN WHAT SEEMS TO BE NORMAL & EMPTY. THE ERROR CODE P0463 (OBD II, OBD2) INDICATES A FUEL SENDING UNIT FAILURE. THIS …

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2005 TRAILBLAZER EXT, 55500 MILES, BOUGHT NEW. IN JANUARY 2013 I FILLED UP MY GAS TANK. WITHIN ONE BLOCK OF LEAVING THE GAS STATION THE FUEL GAUGE WENT TO 0 (EMPTY). THEREAFTER, THE GAUGE READS INTERMITTENTLY BETWEEN WHAT SEEMS TO BE NORMAL & EMPTY. THE ERROR CODE P0463 (OBD II, OBD2) INDICATES A FUEL SENDING UNIT FAILURE. THIS LEAVES ME WITH A DANGEROUS VEHICLE. WHY? SCENARIO: YOUR TRAVELING 60 MPH, RUN OUT OF FUEL & NOW HAVE A DISABLED VEHICLE ON A HIGHWAY WITH OTHER TRAVELERS WHIZZING BY. THE REPAIR FOR THE FUEL SENDING UNIT IS SAID TO BE $600 TO OVER $1000. BY THE WAY, I HAD A '97 S10 BLAZER THAT HAD THE SAME PROBLEM. I UNDERSTAND THERE ARE CURRENTLY ALMOST ONE MILLION COMPLAINTS REGISTERED FOR THE SAME THING ON GM VEHICLES.

NHTSA ODI #10492821

65,000 miles · Dec 15, 2012
Electrical SystemFuel System, Gasoline

FILLED UP TRUCK AND GAS GAUGE STILL SAID IT WAS EMPTY. GAS GAUGE IS FAULTY AND NO LONGER WORKS. HAVE TO KEEP TRACK OF MILEAGE NOW SO I DON'T RUN OUT OF GAS. I ALSO READ THAT GM IS WILLING TO COVER HALF THE COST AND WERE SUPPOSE TO SEND A LETTER STATING THAT. NEVER RECEIVED ANYTHING. NOT AT ALL IMPRESSED WITH GM AND WILL FIN…

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FILLED UP TRUCK AND GAS GAUGE STILL SAID IT WAS EMPTY. GAS GAUGE IS FAULTY AND NO LONGER WORKS. HAVE TO KEEP TRACK OF MILEAGE NOW SO I DON'T RUN OUT OF GAS. I ALSO READ THAT GM IS WILLING TO COVER HALF THE COST AND WERE SUPPOSE TO SEND A LETTER STATING THAT. NEVER RECEIVED ANYTHING. NOT AT ALL IMPRESSED WITH GM AND WILL FIND IT HARD TO STAY A LOYAL CUSTOMER. *TR

NHTSA ODI #10488894

Mileage unknown · Dec 11, 2012
EquipmentFuel System, Gasoline

I HAVE A 2005 CHEVY TRAILBLAZER EXT THAT HAS A FAULTY GAS GAUGE I CANNOT TELL HOW MUCH GAS I HAVE ITS EXTREMELY DANGEROUS WHEN YOU HAVE CHILDREN YOU NEED TO PICK UP DAILY AND DRIVE TO PRACTIVES NOT KNOWING HOW MUCH GAS YOU HAVE SO YOUR ALWAYS IN A PANIC TO PUT MORE. *TR

NHTSA ODI #10488014

62,000 miles · Jun 26, 2012
Fuel System, Gasoline

THERE IS A CHEVROLET ISSUE WITH THE GAS GAUGES THAT CHEVROLET WILL NOT TAKE FULL RESPONSIBILITY FOR. THEY ARE ASKING CUSTOMERS TO PAY 1/2 WHICH CAN COST US TO $300 OR MORE FOR THE CUSTOMER. THE GAS GAUGE IS REGISTERING FULL THEN EMPTY WITHOUT NOTICE. THE GAUGE LIGHTS UP EMPTY EVEN WHEN THE TANK IS FULL. WE NEVER KNOW HOW MUCH GA…

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THERE IS A CHEVROLET ISSUE WITH THE GAS GAUGES THAT CHEVROLET WILL NOT TAKE FULL RESPONSIBILITY FOR. THEY ARE ASKING CUSTOMERS TO PAY 1/2 WHICH CAN COST US TO $300 OR MORE FOR THE CUSTOMER. THE GAS GAUGE IS REGISTERING FULL THEN EMPTY WITHOUT NOTICE. THE GAUGE LIGHTS UP EMPTY EVEN WHEN THE TANK IS FULL. WE NEVER KNOW HOW MUCH GAS IS IN THE CAR. I HAVE SCHEDULED AN APPOINTMENT TO HAVE THIS FIXED BUT CHEVROLET IS NOT COVERING THE ENTIRE COST AND THIS IS TRULY A MANUFACTURER RECALL. *JB

NHTSA ODI #10463125

75,088 miles · Jun 14, 2012
Electrical SystemFuel System, Gasoline

ON OR ABOUT NOVEMBER 12, 2010 THE VEHICLE OWNER HAD THE INSTRUMENT PANEL REPLACED. SHORTLY AFTER REPLACING THE INSTRUMENT PANEL AT A COST OF APPROXIMATELY $550 THE GAS SENSOR STOPPED WORKING. THE OWNER COMPLAINED TO THE CHEVY SERVICE DEPARTMENT BUT WAS TOLD THAT THIS WAS A SEPARATE ISSUE AND NOT CAUSED BY THE REPLACEMENT OF THE …

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ON OR ABOUT NOVEMBER 12, 2010 THE VEHICLE OWNER HAD THE INSTRUMENT PANEL REPLACED. SHORTLY AFTER REPLACING THE INSTRUMENT PANEL AT A COST OF APPROXIMATELY $550 THE GAS SENSOR STOPPED WORKING. THE OWNER COMPLAINED TO THE CHEVY SERVICE DEPARTMENT BUT WAS TOLD THAT THIS WAS A SEPARATE ISSUE AND NOT CAUSED BY THE REPLACEMENT OF THE INSTRUMENT PANEL. THE OWNER CHECKED FOR RECALLS ON THE INTERNET BUT FOUND MORE COMPLAINTS FOR THE SAME ISSUE BUT NO MANUFACTURE RECALL OR DATA ON EITHER THE INSTRUMENT PANEL OR GAS SENOR/GAUGE. SINCE THE GAS SENSOR/GAUGE/FUEL LEVEL INDICATOR DOES NOT WORK THE VEHICLE OWNERS HAVE RUN OUT OF GAS AT LEAST 3 SEPARATE TIMES. 1). A FRIDAY NIGHT AT 10:00 P.M. ON A DARK WINDING ROAD; 2). ON A VERY BUSY 4-LANE THOROUGH FARE BOTH VEHICLE OWNERS AND A PASSENGER RAN OUT OF GAS AT A STOP LIGHT; 3). MOST RECENTLY WAS APPROXIMATELY 3-WEEKS AGO. THERE'S NO WAY TO KNOW WHEN THE GAS TANK IS FULL OR RUNNING LOW ON FUEL BECAUSE THE "LOW GAS" FUEL LIGHT STAYS ON MOST OF THE TIME OR WHEN THE OWNERS DO FILL-UP THE TANK THE GAS GAUGE REMAINS "E". THE OWNERS WERE QUOTED THE COST OF REPAIR WOULD BE UPWARDS OF $500+.

NHTSA ODI #10461733

26,266 miles · Jun 14, 2012
Electrical SystemFuel System, Gasoline

NEARLY EIGHT MONTHS AFTER THE PURCHASE OF THE CHEVY TRAILBLAZER (APRIL 2008) AND WHILE TRAVELING FROM TENNESSEE TO NEW YORK THE INSTRUMENT PANEL THAT CONTROLS THE RPM, ODOMETER, SPEED, FUEL GAUGE, OIL LEVEL, TEMPERATURE, ETC. COMPLETELY STOPPED WORKING. WHILE TRAVELING IN THE STATE OF NEW YORK ON I-90 E THE DRIVER HAD NO INDICAT…

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NEARLY EIGHT MONTHS AFTER THE PURCHASE OF THE CHEVY TRAILBLAZER (APRIL 2008) AND WHILE TRAVELING FROM TENNESSEE TO NEW YORK THE INSTRUMENT PANEL THAT CONTROLS THE RPM, ODOMETER, SPEED, FUEL GAUGE, OIL LEVEL, TEMPERATURE, ETC. COMPLETELY STOPPED WORKING. WHILE TRAVELING IN THE STATE OF NEW YORK ON I-90 E THE DRIVER HAD NO INDICATION OF THE VEHICLE SPEED. WHEN SHIFTING FROM THE LEFT PASSING LANE TO THE NEAREST MIDDLE LANE A NY STATE TROOPER CLOCKED THE VEHICLE SPEED AT APPROXIMATELY 90+ MILES PER HOUR. THE DRIVER WAS SIGHTED WITH A SPEEDING TICKET DURING THE THANKSGIVING HOLIDAY WEEKEND. THE VEHICLE OWNER HAD THE INSTRUMENT PANEL REPLACED AT A COST OF MORE THAN $500. HOWEVER, SOON AFTER THE INSTRUMENT PANEL WAS REPLACED THE GAS SENSOR STOPPED WORKING. THE OWNER COMPLAINED TO THE CHEVY SERVICE DEPARTMENT BUT WAS TOLD THAT THIS WAS A SEPARATE ISSUE AND NOT CAUSED BY THE REPLACEMENT OF THE INSTRUMENT PANEL. THE OWNER CHECKED FOR RECALLS ON THE INTERNET BUT FOUND MORE COMPLAINTS OF THE SAME AND NO RECALL INFORMATION. SINCE THE GAS SENSOR/GAUGE/FUEL LEVEL INDICATOR DOES NOT WORK THE VEHICLE OWNERS HAVE RUN OUT OF GAS AT LEAST 3 SEPARATE TIMES. ONCE ON A FRIDAY NIGHT AT 10:00 P.M. ON A DARK WINDING ROAD. ANOTHER TIME ON A VERY BUSY 4-LANE THOROUGH FARE THE VEHICLE OWNERS WITH A PASSENGER RAN OUT OF GAS AT A STOP LIGHT. MOST RECENTLY WAS APPROXIMATELY 3-WEEKS AGO. THE VEHICLE OWNERS HAVE PURCHASED AT LEAST 3 NEW GAS CANS SINCE WE CANNOT TELL WITH THE VEHICLE IS FULL OF GAS OR NOT. WHEN THE GAS TANK IS FILLED UP THERE'S NO WAY OF KNOWING AND THE OWNERS CANNOT TELL WHEN THE VEHICLE IS RUNNING LOW ON FUEL SINCE THE "LOW GAS" FUEL LIGHT STAYS ON MOST OF THE TIME OR THE GAS GAUGE RARELY MOVES PASSED "E". THE OWNERS WERE QUOTED THAT THE COST TO REPAIR WOULD BE UPWARDS OF $500+. *JB

NHTSA ODI #10461729

Official recalls

2

06V417000 · Air Bags:frontal

Oct 31, 2006

CERTAIN VEHICLES ORIGINALLY BUILT WITH CLOTH SEATS THAT WERE EQUIPPED WITH AN AUTOMATIC AIR BAG PASSENGER SENSING SYSTEM AND LATER REUPHOLSTERED WITH AFTERMARKET LEATHER SEAT COVER KITS ARE INVOLVED. TESTING HAS INDICATED THAT THE AFTERMARKET LEATHER SEAT COVERS CAN CAUSE THE PASSENGER SENSING SYSTEM TO MALFUNCTION.

Consequence & remedy

Consequence: IF THE PASSENGER SENSING SYSTEM MALFUNCTIONS, THE FRONT AIR BAG ON THE PASSENGER SIDE MAY BE DISABLED WHEN IT SHOULD BE ENABLED, OR ENABLED WHEN IT SHOULD BE DISABLED. IN EITHER CASE, IN THE EVENT OF A CRASH THAT REQUIRES AIR BAG DEPLOYMENT, A FRONT PASSENGER'S LEVEL OF INJURY MAY BE INCREASED.

Remedy: BECAUSE A REPLACEMENT LEATHER SEAT COVER THAT IS COMPATIBLE WITH THE PASSENGER SENSING SYSTEM IS NOT AVAILABLE, GENERAL MOTORS (GM) WILL REPURCHASE THESE VEHICLES IN ACCORDANCE WITH THE TERMS STATED IN GM'S LETTER TO OWNERS. THE RECALL BEGAN ON NOVEMBER 6, 2006. OWNERS SHOULD CONTACT GM AT 1-877-477-1022 TO BEGIN THE PROCESS OF REPURCHASING THEIR VEHICLE.

05V035000 · Visibility:windshield

Feb 3, 2005

CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 212, 'WINDSHIELD MOUNTING.' THE WINDSHIELD URETHANE BEAD MAY NOT HAVE ADHERED TO THE BODY IN CERTAIN AREAS DURING THE CURE PROCESS.

Consequence & remedy

Consequence: IF A CRASH OCCURS, THE WINDSHIELD MAY NOT BE RETAINED, INCREASING THE RISK OF INJURY TO A VEHICLE OCCUPANT.

Remedy: DEALERS WILL REPLACE THE WINDSHIELD FREE OF CHARGE. THE RECALL BEGAN ON MARCH 10, 2005. OWNERS MAY CONTACT BUICK AT 1-866-608-8080, CHEVROLET AT 1-800-630-2438, OR GMC AT 1-866-996-9463.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

2

RQ17002 · 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.

DP10001 · Fuel Level Gauge System Failure

Opened Jan 7, 2010 · Closed May 23, 2011

Status: closed (inferred from source dates) · Fuel System, Other; Fuel System, Other:storage:fuel Gauge System

The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.

Additional source detail variants (2)

Fuel System, Other

The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.

Fuel System, Other:storage:fuel Gauge System

The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.