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2004 Isuzu Ascender

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2004 Isuzu Ascender do not stand out strongly from the model-year median of 32.

About this comparison →

When problems were reported

Mileage at the reported incident

51 reports with mileage · 13 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 34 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel System, Gasoline. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 7 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports2 fire reports0 injury reports

What owners actually said

64 reports
16,400 miles · Jun 20, 2007
Fuel System, Diesel

ENGLISH: PLASTIC GAS TANK BROKE IN THE CONNECTION TO THE PIPE OR HOSE WHEN ENTERING THE GASOLINE TO THE GAS TANK. SPANISH : LA CONECCION DEL TANQUE CON EL TUBO O MANGA POR DONDE ENTRA LA GASOLINA AL TANQUE DE GASOLINA DE ISUZU ASCENDER SE ROMPE CREANDO PROBLEMA DE DERRAME DE GASOLINA SI SE LLENA EL TANQUE. EL TANQUE ES PLASTI…

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ENGLISH: PLASTIC GAS TANK BROKE IN THE CONNECTION TO THE PIPE OR HOSE WHEN ENTERING THE GASOLINE TO THE GAS TANK. SPANISH : LA CONECCION DEL TANQUE CON EL TUBO O MANGA POR DONDE ENTRA LA GASOLINA AL TANQUE DE GASOLINA DE ISUZU ASCENDER SE ROMPE CREANDO PROBLEMA DE DERRAME DE GASOLINA SI SE LLENA EL TANQUE. EL TANQUE ES PLASTICO. EN EL DEALER EL TECNICO INDICA QUE ESTO SYA A SUCEDIDO VARIAS VECES CON OTRAS UNIDADES PERO QUE LA GARANTIA CUBRE SIEMPRE Y CUANDO TENGA MENOS DE 2 ANOS O 24,000MILLAS. ESTO ES UN RIEGO SEVERO A LA SEGURIDAD Y PUEDE CREAR SE INCENDIE EL VEHICULO. *AK

NHTSA ODI #10193866

5,691 miles · Oct 10, 2006
Electrical SystemEngine And Engine Cooling

CHECK ENGINE LIGHT CAME ON WHILE VEHICLE WAS IDLING. TOOK TO DEALER AND HE HAD TO REPROGRAM OR REBOOT THE COMPUTER. (1 DAY AT DEALER) SUBSEQUENTLY (APPROX. 6 MONTHS) THE DASH LIGHTS FAILED (NO WARNING LIGHTS) DEALER REPROGRAMMED/REBOOTED COMPUTER. PROBLEM RECURRED ON TRIP HOME SO I RETURNED CAR TO DEALER. DIAGNOSED AS BAD I…

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CHECK ENGINE LIGHT CAME ON WHILE VEHICLE WAS IDLING. TOOK TO DEALER AND HE HAD TO REPROGRAM OR REBOOT THE COMPUTER. (1 DAY AT DEALER) SUBSEQUENTLY (APPROX. 6 MONTHS) THE DASH LIGHTS FAILED (NO WARNING LIGHTS) DEALER REPROGRAMMED/REBOOTED COMPUTER. PROBLEM RECURRED ON TRIP HOME SO I RETURNED CAR TO DEALER. DIAGNOSED AS BAD INSTRUMENT PANEL - TOOK 6 DAYS TO GET REPLACEMENT PART. PARTS FOR ISUZU HAVE TO BE ORDERED FROM ISUZU. THE EXACT SAME PART IS AVAILABLE FROM CHEVROLET, GMC, BUICK AND WAS READILY AVAILABLE FROM ANY OF THESE BUT WE LOST USE OF OUR VEHICLE FOR 6 DAYS WAITING ON ISUZU TO DELIVER THE PART. *NM

NHTSA ODI #10170352

25,947 miles · Sep 25, 2006
Electrical System

DT*: THE CONTACT STATED WHILE DRIVING 55 MPH, THE DASHBOARD GAUGE LIGHTS BEGAN DIMMING. THERE WERE NO WARNING SIGNALS PRIOR TO THE INCIDENT. THE VEHICLE WAS TAKEN TO THE SERVICE DEALER WHO DETERMINED THAT THERE WAS A SHORT IN THE BATTERY. A NEW BATTERY WAS INSTALLED BUT THE PROBLEM PERSISTED. THE MANUFACTURER WAS NOTIFIED AND…

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DT*: THE CONTACT STATED WHILE DRIVING 55 MPH, THE DASHBOARD GAUGE LIGHTS BEGAN DIMMING. THERE WERE NO WARNING SIGNALS PRIOR TO THE INCIDENT. THE VEHICLE WAS TAKEN TO THE SERVICE DEALER WHO DETERMINED THAT THERE WAS A SHORT IN THE BATTERY. A NEW BATTERY WAS INSTALLED BUT THE PROBLEM PERSISTED. THE MANUFACTURER WAS NOTIFIED AND COULD NOT DETERMINE THE PROBLEM OR OFFER A RESOLUTION.

NHTSA ODI #10169239

5,800 miles · Jan 31, 2006
Electrical System

INSTRUMENT PANEL BEGAN WORKING INTERMITTENTLY. TOOK IN FOR CHECK. DEALER REPAIRED. LEFT DEALER AND INSTRUMENT PANEL FAILED AGAIN WITHIN 15 MINUTES. RETURNED TO DEALER AND HAD TO WAIT FOR (8) DAYS FOR REPLACEMENT DASH MODULE. CAR WAS UNSAFE AND UNDRIVABLE AS NO INFORMATION (SPEED, GEAR LOCATION, ETC.) WAS AVAILABLE TO DRIVER.…

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INSTRUMENT PANEL BEGAN WORKING INTERMITTENTLY. TOOK IN FOR CHECK. DEALER REPAIRED. LEFT DEALER AND INSTRUMENT PANEL FAILED AGAIN WITHIN 15 MINUTES. RETURNED TO DEALER AND HAD TO WAIT FOR (8) DAYS FOR REPLACEMENT DASH MODULE. CAR WAS UNSAFE AND UNDRIVABLE AS NO INFORMATION (SPEED, GEAR LOCATION, ETC.) WAS AVAILABLE TO DRIVER. THIS VEHICLE IS A GM PRODUCT AND IS THE SAME AS TRAILBLAZER, ENVOY, ETC. I HAVE BEEN TOLD BY ENVOY OWNERS THAT THEY HAVE EXPERIENCED THE SAME PROBLEM,TRAILBLAZERS ALSO. DEALER SERVICE REP STATED TO ME THAT GM KNOWS THERE IS A PROBLEM WITH THE INSTRUMENT MODULES. THIS COMPLAINT FORM DOES NOT ALLOW FOR THE IDENTIFICATION OF THE MANUFACTURER OF THIS VEHICLE. IT IS MANUFACTURED BY GENERAL MOTORS. I HAD TO SELECT ISUZU MANUFACTURING DUE TO YOUR ERROR IN PROGRAMMING DROP DOWNS CORRECTLY. ISUZU HAS NO MANUFACTURING FACILITIES IN NORTH AMERICA. PLEASE UPDATE YOUR INFORMATION. IF THIS VEHICLE IS NOT CLASSIFIED AS A GM PRODUCT IT WILL REDUCE THE FAILURE INCIDENCE OF THE GM INSTRUMENT PANELS. *NM

NHTSA ODI #10149089

Mileage unknown · Jan 23, 2006
Electrical SystemEquipmentExterior Lighting

THE RADIO, ANTI THEFT DEVICE, REMOTE DOOR LOCKS AND TAIL LIGHTS DID NOT FUNCTION PROPERLY IN THE CONSUMER'S 2004 ISUZU ASCENDER. *TS THE VEHICLE HAS BEEN AT THE SERVICE DEALER SINCE DEC 16, 2005 AND THE CONSUMER WAS NOT GIVEN A TIME FRAME FOR REPAIRS. THE TECHNICIAN INDICATED THAT THE PROBLEM SEEMED TO BE WITH THE MULTI-RELAY…

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THE RADIO, ANTI THEFT DEVICE, REMOTE DOOR LOCKS AND TAIL LIGHTS DID NOT FUNCTION PROPERLY IN THE CONSUMER'S 2004 ISUZU ASCENDER. *TS THE VEHICLE HAS BEEN AT THE SERVICE DEALER SINCE DEC 16, 2005 AND THE CONSUMER WAS NOT GIVEN A TIME FRAME FOR REPAIRS. THE TECHNICIAN INDICATED THAT THE PROBLEM SEEMED TO BE WITH THE MULTI-RELAY AND ELECTRICAL SYSTEM. *NM

NHTSA ODI #10149740

Mileage unknown · Oct 12, 2005
Seat Belts

THE SAFETY BELTS ON THE VEHICLE FOR THE DRIVER AND FRONT PASSENGER DO NOT WORK PROPERLY. WHEN YOU PUT THE SEAT BELTS ON THEY RIDE ON THE NEXT OF THE PERSON WEARING THEM. THEY ALSO DO NOT FIT PROPERLY ACROSS THE CHEST OF THE PERSON WEARING THEM. THEY CAN NOT BE ADJUSTED TO ACCOMMODATE PEOPLE WHO ARE TALLER OR SHORTER. WHEN I P…

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THE SAFETY BELTS ON THE VEHICLE FOR THE DRIVER AND FRONT PASSENGER DO NOT WORK PROPERLY. WHEN YOU PUT THE SEAT BELTS ON THEY RIDE ON THE NEXT OF THE PERSON WEARING THEM. THEY ALSO DO NOT FIT PROPERLY ACROSS THE CHEST OF THE PERSON WEARING THEM. THEY CAN NOT BE ADJUSTED TO ACCOMMODATE PEOPLE WHO ARE TALLER OR SHORTER. WHEN I PUT THE SEAT BELT ON IT APPLIES PRESSURE TO MY NECK IT CAN NOT BE ADJUSTED TO RIDE OVER MY HIPS INSTEAD OF MY STOMACH. *JB

NHTSA ODI #10139420

11,250 miles · Jun 25, 2005
Service Brakes, Hydraulic

I OWN A 2004 ISUZU ASCENDER. THERE HAS BEEN A HOST OF PROBLEMS THAT I HAVE HAD TO DEAL WITH IN THE MINIMAL 10 MONTHS THAT I HAVE OWNED THE VEHICLE. TWO OF THE PROBLEMS HAVE YET TO RECEIVE ANY TYPE OF FIX FROM THE LOCAL ISUZU SERVICE CENTER. THE FIRST PROBLEM WAS THE BELT SCREAMING EVERY DAY. I TOOK THE VEHICLE IN THREE TIMES …

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I OWN A 2004 ISUZU ASCENDER. THERE HAS BEEN A HOST OF PROBLEMS THAT I HAVE HAD TO DEAL WITH IN THE MINIMAL 10 MONTHS THAT I HAVE OWNED THE VEHICLE. TWO OF THE PROBLEMS HAVE YET TO RECEIVE ANY TYPE OF FIX FROM THE LOCAL ISUZU SERVICE CENTER. THE FIRST PROBLEM WAS THE BELT SCREAMING EVERY DAY. I TOOK THE VEHICLE IN THREE TIMES FOR THE BELT AND THEY FINALLY FIXED IT. THE SECOND PROBLEM IS ALL FOUR DOOR WINDOWS. DEBRIS CONSISTENTLY MAKES ITS WAY INTO THE DOOR AND ANY TIME I ROLL DOWN OR ROLL UP MY WINDOWS MY WINDOWS GET SEVERLY SCRATCHED. I ADDRESSED THIS ISSUE WITH THE SERVICE CENTER AND THEY SAID THERE IS NOTHING THEY CAN DO ABOUT IT AND THAT IT IS NOT A PRODUCT MALFUNCTION. I HAVE NEVER HAD A VEHICLE DO THIS AND NOR DO I KNOW ANYONE THAT HAS HAD A SIMILAR ISSUE. LASTLY AND MOST IMPORTANTLY, MY FAMILY AND I WERE ON A ROUTINE DRIVE BACK FROM NEW HAMPSHIRE. THE CONDITIONS WERE CLEAR AND THE ROADS WERE OF TYPICAL NEW ENGLAND REPAIR. A VEHICLE PULLED OUT IN FRONT OF OURS AND IN REACTION I APPLIED HEAVY, NOT EXCESSIVE, PRESSURE TO THE BREAK PEDAL. THE PETAL STARTED TO CLICK, MOST LIKELY THE ABS, BUT NOTHING KICKED IN TO STOP MY VEHICLE. WHEN I SAY NOTHING, IT WAS LIKE I NEVER STEPPED ON THE BREAK AT ALL. I HAD TO SWERVE IN TO THE OTHER LANE OF TRAFFIC TO AVOID A COLLISION. THE NEXT DAY I TOOK THE VEHICLE IN TO BE LOOKED AT AND THE SERVICE DEPARTMENT SENT MYSELF AND A MECHANIC OUT ON A ROAD TEST IN HOPES TO DUPLICATE THE MALFUNCTION. I DID NOT HAVE ANY REAL LUCK WITH DUPLICATING THE MALFUNCTION BUT I KNOW IT EXISTS. IT HAS HAPPENED TO MY WIFE THREE TIMES AND MYSELF ONCE. THE SERVICE DEPARTMENT SAID THERE IS NOTHING THEY CAN DO RIGHT NOW AND TO WAIT FOR A GM CERTIFIED MECHANIC TO HAVE THE OPPORTUNITY TO LOOK AT MY VEHICLE. THE BREAKS HAVE GONE UNCHECKED SINCE THE LATEST INCIDENT AND MY CONFIDENCE IN THE SAFETY OF THE VEHICLE WAVERS MORE AND MORE EVERY DAY.

NHTSA ODI #10126560

8,000 miles · Jun 20, 2005
Suspension

DT: WAS DRIVING AT ABOUT MIDNIGHT WHEN SUDDENLY THE VEHICLE STARTED SHAKING. THERE WAS A LOUD THUMP. PULLED OVER ,AND TIRE HAD EXPLODED. HAD TOWED TO HOME. CALLED AAA TO COME OUT AND CHANGE TIRE AND PUT ON SPARE TIRE. THERE WAS NO EVIDENCE OF RUNNING OVER OR STRIKING AN OBJECT. WHEN WENT TO SERVICE DEALER FOR TIRES, DEALER…

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DT: WAS DRIVING AT ABOUT MIDNIGHT WHEN SUDDENLY THE VEHICLE STARTED SHAKING. THERE WAS A LOUD THUMP. PULLED OVER ,AND TIRE HAD EXPLODED. HAD TOWED TO HOME. CALLED AAA TO COME OUT AND CHANGE TIRE AND PUT ON SPARE TIRE. THERE WAS NO EVIDENCE OF RUNNING OVER OR STRIKING AN OBJECT. WHEN WENT TO SERVICE DEALER FOR TIRES, DEALER SAID TIRE SHOULD NOT HAVE DETERIORATED. DEALER SUGGESTED CONSUMER TAKE PICTURE OF THIS UNIQUE DAMAGE TO THE TIRE. NO PROBLEMS SINCE THIS HAS BEEN REPLACED BUT THERE WAS CONCERNED BECAUSE THE REMAINING TIRES WERE CONTINENTIAL BRAND TIRES ,AND THE VEHICLE STILL SHOOK, EVEN AFTERALANCING TIRES AND ALIGNMENT.*AK

NHTSA ODI #10125778

2,000 miles · Jun 20, 2005
Electrical System

DT: WENT TO START THE VEHICLE AND IT WOULDN'T START BECAUSE LIGHT IN DASHBOARD WOULD SAY UNKNOWN DRIVER,. ACCORDING TO THE DEALER THE FIRST TIME IT WAS THE WIRING. SECOND TIME SAID IT WAS THE IGNITION, AND PUT IN A NEW IGITION. FOR 3 NIGHTS AFTER GETTING IT BACK IT WOULDN'T START AT ALL. WAS TOWED TO THE DEALER AGAIN.*AK

NHTSA ODI #10125759

Mileage unknown · Dec 30, 2004
Visibility

THE REAR WINDOW POPPED AND EXPLODE ON ITS OWN, POSSIBLY INJURING THE BACK PASSENGER. TOOK TO THE DEALER FOR REPAIRS TWICE, BUT THE CAUSE WAS UNDETERMINED.*AK

NHTSA ODI #10105557

Official recalls

1

05V198000 · Exterior Lighting:turn Signal

May 5, 2005

ON CERTAIN TRUCKS AND SPORT UTILITY VEHICLES, THE DRIVER WISHING TO SIGNAL A TURN BY MOVING THE DIRECTIONAL SIGNAL LEVER, (UP OR DOWN) MAY CAUSE THE FRONT MARKER/TURN LIGHTS AND REAR TURN LIGHTS TO FLASH IN A MANNER SIMILAR TO HAZARD WARNING, RATHER THAN FLASHING ON THE DESIRED SIDE ONLY.

Consequence & remedy

Consequence: THE DRIVER MAY NOT BE ABLE TO CLEARLY SIGNAL THEIR INTENTIONS TO TURN, CHANGE TRAVEL LANES, OR POTENTIALLY WARN OTHERS OF AN IMPAIRED VEHICLE OPERATING CONDITION INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL REPLACE THE SUSPECT FLASHER MODULES WITH A NEW FLASHER MODULE DESIGNED WITH SEALED RELAYS AND MORE DURABLE CONTACT MATERIAL INSIDE OF THE RELAYS FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 4, 2005. ISUZU BEGAN MAILING OWNER LETTERS ON AUGUST 4, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, ISUZU AT 1-800-255-6727, BUICK AT 1-866-608-8080, AND OLDSMOBILE AT 1-800-630-6537.

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.

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.