NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
64 reports75,853 miles · Jan 8, 2009
Fuel System, Gasoline
MY CHECK ENGINE LIGHT CAME ON AND I TOOK IT IN TO HAVE A DIAGNOSTIC CHECK AND I WAS INFORMED THAT MY 2004 ISUZU ASCENDER HAD A CRACK IN THE GAS TANK DUE TO FAULTY EQUIPMENT. THERE ARE GAS FUMES IN THE CAR AS WELL. I CONTACTED THE MANUFACTURER WHO STATES THAT THERE ARE BULLETINS FOR THIS PROBLEM FOR THE 2003 AND 2004 ASCENDERS HO…
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MY CHECK ENGINE LIGHT CAME ON AND I TOOK IT IN TO HAVE A DIAGNOSTIC CHECK AND I WAS INFORMED THAT MY 2004 ISUZU ASCENDER HAD A CRACK IN THE GAS TANK DUE TO FAULTY EQUIPMENT. THERE ARE GAS FUMES IN THE CAR AS WELL. I CONTACTED THE MANUFACTURER WHO STATES THAT THERE ARE BULLETINS FOR THIS PROBLEM FOR THE 2003 AND 2004 ASCENDERS HOWEVER MY VEHICLE WILL NOT BE COVERED. *TR
NHTSA ODI #10254243
30,500 miles · Dec 30, 2008
Electrical System
SERVICE ENGINE LIGHT REMAINS ON, SERVICE DEPARTMENT UNABLE TO FIX PROBLEM. *TR
NHTSA ODI #10253308
80,000 miles · Aug 13, 2008
Electrical System
TL*THE CONTACT OWNS A 2004 ISUZU ASCENDER. THE CONTACT STARTED THE IGNITION AND NOTICED THAT THE DIGITAL ODOMETER AND GEAR GAUGES WERE INOPERATIVE. ALSO, ALL OF THE WARNING LIGHT INDICATORS WERE NOT WORKING ON THE INSTRUMENT PANEL. THERE WERE NO WARNINGS PRIOR TO THE INTERMITTENT FAILURES. THE VEHICLE WAS BEING SCHEDULED FOR…
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TL*THE CONTACT OWNS A 2004 ISUZU ASCENDER. THE CONTACT STARTED THE IGNITION AND NOTICED THAT THE DIGITAL ODOMETER AND GEAR GAUGES WERE INOPERATIVE. ALSO, ALL OF THE WARNING LIGHT INDICATORS WERE NOT WORKING ON THE INSTRUMENT PANEL. THERE WERE NO WARNINGS PRIOR TO THE INTERMITTENT FAILURES. THE VEHICLE WAS BEING SCHEDULED FOR AN APPOINTMENT AT THE AUTHORIZED DEALER. THE FAILURE AND CURRENT MILEAGES WERE 80,000. UPDATED 8/25/10 *CN THE CONSUMER STATED THE VEHICLE HAS AN ELECTRICAL PROBLEM. UPDATED 08/27/10 UPDATED 08/30/10*JB
NHTSA ODI #10238021
65,000 miles · Apr 29, 2008
Electrical SystemFuel System, OtherVisibility
#1 BACK WINDOW POPS OPEN WHILE DRIVING #2 SPEED GAGE STOPS AT TIMES, FUEL GAGE STOPPED WORKING COMPLETELY. *TR
NHTSA ODI #10226027
Mileage unknown · Mar 9, 2008
Electrical System
I OWN A 2004 ISUZU ASCENDER AND SEVERAL MONTHS AGO THE INSTRUMENT PANEL BEGAN WORKING ERRATICALLY, AND NOW, NOT AT ALL. SPECIFICALLY THE TACHOMETER AND SPEEDOMETER ARE NON-FUNCTIONING, AND THE VOLTMETER AND OIL PRESSURE GAUGE GIVE FALSE READINGS. I HAVE CONTACTED THE DEALER AND AM TOLD THERE IS NO RECALL AND THE WARRANTY IS N…
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I OWN A 2004 ISUZU ASCENDER AND SEVERAL MONTHS AGO THE INSTRUMENT PANEL BEGAN WORKING ERRATICALLY, AND NOW, NOT AT ALL. SPECIFICALLY THE TACHOMETER AND SPEEDOMETER ARE NON-FUNCTIONING, AND THE VOLTMETER AND OIL PRESSURE GAUGE GIVE FALSE READINGS. I HAVE CONTACTED THE DEALER AND AM TOLD THERE IS NO RECALL AND THE WARRANTY IS NOW UP. I HAVE CONTACTED ISUZU OF AMERICA AND TOLD THERE IS NO RECALL AND WILL HAVE TO TAKE THE VEHICLE TO THE DEALERSHIP. BECAUSE THIS INVOLVES THE SPEEDOMETER, I FEEL THIS IS A SAFETY ISSUE. ADDITIONALLY A CO-WORKER OWNS A 2004 GMC ENVOY WHICH IS A SISTER VEHICLE, AND SHE IS ALSO HAVING THE SAME PROBLEMS. *TR
NHTSA ODI #10220480
85,000 miles · Jan 29, 2008
Electrical System
TACHOMETER NEEDLE WENT STRAIGHT DOWN AND GAVE INCORRECT READINGS, THEN A FEW WEEKS LATER THE SPEEDOMETER DID THE SAME THING THEN A WEEK LATER THE OIL PRESSURE GAUGE BEGAN TO GIVE INCORRECT READINGS. MY MECHANIC SAYS HE HAS ALREADY HAD ONE 2004 GM VEHICLE IN FOR THE SAME THING. *CN
NHTSA ODI #10216360
25,000 miles · Jan 9, 2008
Electrical System
JUST TO LET YOU KNOW. GMC ENVOY, CHEVROLET TRAILBLAZER, BUICK RAINIER, OLDSMOBILE BRAVADA, SAAB 9-7X, ISUZU ASCENDER THEY ARE ALL EXACTLY THE SAME VEHICLE THAT HAS JUST BEEN REBADGED. I PERSONALLY DRIVE A 2004 ISUZU ASCENDER, AND I CAN'T GET GM , CHEVY, OR ISUZU TO FIX IT WITHOUT CHARGING ME $475. MY TACHOMETER ALWAYS READS …
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JUST TO LET YOU KNOW. GMC ENVOY, CHEVROLET TRAILBLAZER, BUICK RAINIER, OLDSMOBILE BRAVADA, SAAB 9-7X, ISUZU ASCENDER THEY ARE ALL EXACTLY THE SAME VEHICLE THAT HAS JUST BEEN REBADGED. I PERSONALLY DRIVE A 2004 ISUZU ASCENDER, AND I CAN'T GET GM , CHEVY, OR ISUZU TO FIX IT WITHOUT CHARGING ME $475. MY TACHOMETER ALWAYS READS WRONG. MY SPEEDOMETER SOMETIMES READS WRONG AND MY GAS GAUGE DOES NOT GIVE ME THE CORRECT READING. THIS CAN BE REAL DANGEROUS. THE SPEEDOMETER ISSUE IS MORE WIDE SPREAD THAN YOU GUYS THINK. *TR
NHTSA ODI #10214347
25,700 miles · Dec 21, 2007
Electrical System
THE SPEEDOMETER IN MY 2004 ISUZU ASCENDER WHICH IS A GM PRODUCT IS GIVING FALSE READINGS AND SHOWS HIGHER AND/OR SLOWER SPEEDS THAN THE CORRECT SPEED. I AM AWARE THAT THIS IS A NATIONWIDE COMPLAINT AMONG OTHER GM PRODUCT OWNERS. THE DEALERSHIPS ARE REFUSING TO FIX IT, CITING "OUT OF WARRANTY" EXCUSES AND SAYING THAT IT IS NOT …
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THE SPEEDOMETER IN MY 2004 ISUZU ASCENDER WHICH IS A GM PRODUCT IS GIVING FALSE READINGS AND SHOWS HIGHER AND/OR SLOWER SPEEDS THAN THE CORRECT SPEED. I AM AWARE THAT THIS IS A NATIONWIDE COMPLAINT AMONG OTHER GM PRODUCT OWNERS. THE DEALERSHIPS ARE REFUSING TO FIX IT, CITING "OUT OF WARRANTY" EXCUSES AND SAYING THAT IT IS NOT A SAFETY ISSUE. IT IS IN FACT, A SAFETY ISSUE AND SHOULD BE FIXED AT NO COST TO THE CONSUMER. *TR
NHTSA ODI #10212477
32,000 miles · Aug 4, 2007
Tires
THE TIRE FAILURE OCCURRED WHILE DRIVING EASTBOUND I-10 IN THE RIGHT LANE, APPROX. 40 MILES WEST OF PHOENIX AZ. THE LOCAL TIME WAS APPROX. 3:30 PM. OUTSIDE TEMP. WAS 102 F ACCORDING TO THE VEHICLE'S THERMOMETER. THE VEHICLE WAS NORMALLY LOADED, & WAS INSPECTED PRIOR TO DEPARTING ON THE TRIP - INCLUDING TIRE PRESSURE & TREAD WI…
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THE TIRE FAILURE OCCURRED WHILE DRIVING EASTBOUND I-10 IN THE RIGHT LANE, APPROX. 40 MILES WEST OF PHOENIX AZ. THE LOCAL TIME WAS APPROX. 3:30 PM. OUTSIDE TEMP. WAS 102 F ACCORDING TO THE VEHICLE'S THERMOMETER. THE VEHICLE WAS NORMALLY LOADED, & WAS INSPECTED PRIOR TO DEPARTING ON THE TRIP - INCLUDING TIRE PRESSURE & TREAD WITHIN SPECIFICATIONS. MY WIFE WAS DRIVING AT 75 MILES PER HOUR WHEN WE BOTH SENSED AN ABNORMAL VIBRATION FROM THE REAR OF THE VEHICLE. THE SENSATION WAS SIMILAR TO DRIVING OVER HEAVILY GROOVED CONCRETE. MY WIFE ASKED WHAT I THOUGHT OF IT, & I ASKED HER TO CHANGE THE VEHICLE'S SPEED TO SEE IF THE SOUND CHANGED. SHE DECELERATED AROUND 5-10 MPH, THEN WAS ACCELERATING AGAIN WHEN WE HEARD A LOUD EXPLOSION FROM THE LEFT REAR OF THE VEHICLE. THE ENTIRE SUV WAS JOLTED AS IF WE HAD BEEN STRUCK FROM BEHIND, FOLLOWED BY A LOUD FLAPPING/THUMPING SOUND. I FELT THE VEHICLE YAW TO THE LEFT, THEN FISHTAIL RIGHT - LEFT - AND RIGHT AGAIN. THIS YAW OSCILLATION WAS ACCOMPANIED BY A COUPLED ROLLING MOTION. MY WIFE DID NOT APPLY STEERING WHEEL OR BRAKE INPUTS, & REMOVED HER FOOT FROM THE GAS. THE VEHICLE OSCILLATIONS DAMPED & THEN WE COASTED OFF ONTO THE RIGHT SHOULDER. UPON INSPECTION, THE AFT LEFT TIRES TREAD SEPARATED FROM THE TIRE BODY. THE SIDEWALL SPLIT IN MULTIPLE LOCATIONS. THE TIRE TREAD WAS BROKEN INTO TWO SECTIONS CIRCUMFERENTIALLY AND WRAPPED AROUND THE AXLE, BRAKE, & SUSPENSION ASSEMBLIES. THIS REQUIRED SUBSTANTIAL FORCE TO UNWRAP & REMOVE. ADDITIONALLY, THE LOWER AFT PORTION OF THE AFFECTED WHEEL WELL WAS BENT FORWARD TOWARD THE AXLE INTO THE SPACE NORMALLY OCCUPIED BY THE TIRE. FINALLY, THE VEHICLE'S REAR FENDER WAS CRACKED IN THE AREA BEHIND THE LEFT REAR TIRE. THE DAMAGED TIRE WAS REMOVED & THE WHEEL WELL METAL WAS BENT OUT OF THE WAY ON SITE SO THE SPARE COULD BE INSTALLED. THE APPRAISAL & REPAIR PROCESS IS ONGOING. THE TIRE WAS UNDER OEM WARRANTY, & THE MANUFACTURER HAS BEEN NOTIFIED TO EXPECT A CLAIM. *TR
NHTSA ODI #10198503
59,000 miles · Jul 5, 2007
Electrical System
TL*THE CONTACT OWNS A 2004 ISUZU ASCENDER. THE CONTACT STATED THAT THE SPEEDOMETER AND RPM GAUGE OPERATE INTERMITTENTLY. HE STATED THAT ALL OF THE OTHER INSTRUMENT PANEL GAUGES OPERATE CORRECTLY. THE VEHICLE HAS NOT BEEN INSPECTED BY THE DEALER. THE CURRENT MILEAGE IS 59,064 AND FAILURE MILEAGE WAS 59,000.
NHTSA ODI #10195409
NHTSA investigations
2RQ17002 · 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.