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2005 Isuzu Ascender

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2005 Isuzu Ascender do not stand out strongly from the model-year median of 32.

About this comparison →

How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

55 reports with mileage · 9 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 27 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel System, Gasoline. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

3 crash reports1 fire reports1 injury reports

What owners actually said

64 reports
45,000 miles · Apr 30, 2012
Engine And Engine Cooling

CHECK ENGINE LIGHT IS ON.. TEST INDICATES IT IS THE ENGINE THERMOSTAT. AC/HEATER FAN WILL NOT WORK ON HIGH SPEED.. *JS

NHTSA ODI #10456876

114,000 miles · Apr 5, 2012
Electrical SystemFuel System, Gasoline

I HAVE BEEN HAVING ISSUES WITH MY GAS GAUGE FOR ABOUT 3 WEEKS...AT FIRST I WOULD FILL UP THE TANK OR AT LEAST THINK IT WAS FULL AS THE GAUGE WOULD MOVE ALL THE WAY OVER TO FULL THEN AFTER I WOULD STOP PUMPING AND TURN ON THE CAR THE GAUGE WOULD GO DOWN TO 3/4 TANK AND FLUCTUATE BACK AND FORTH BETWEEN 3/4 AND FULL OVER SEVERAL DA…

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I HAVE BEEN HAVING ISSUES WITH MY GAS GAUGE FOR ABOUT 3 WEEKS...AT FIRST I WOULD FILL UP THE TANK OR AT LEAST THINK IT WAS FULL AS THE GAUGE WOULD MOVE ALL THE WAY OVER TO FULL THEN AFTER I WOULD STOP PUMPING AND TURN ON THE CAR THE GAUGE WOULD GO DOWN TO 3/4 TANK AND FLUCTUATE BACK AND FORTH BETWEEN 3/4 AND FULL OVER SEVERAL DAYS. THEN YESTERDAY I WENT AND FILLED UP AND DECIDED TO NOT USE THE GAUGE AS A MEASURING SYSTEM AND INSTEAD JUST LET THE PUMP GO UNTIL IT CLICKED OFF AS IT DOES WHEN TANK IS FULL SO I DID THIS AND THE GAUGE WENT UP TO FULL THEN BOUNCED BACK TO EMPTY AND NOW MY FUEL LOW LIGHT IS ON AND I CANNOT GET ANY RANGE READING ON MILEAGE FOR GAS OR ANYTHING. ALSO IT SHOULD BE NOTED THAT ABOUT THAT SAME 3 WEEKS AGO MY SPEEDOMETER STOPPED WORKING BRIEFLY STARTING OFF AT 65 MPH AT REST THEN IT GRADUALLY MADE ITS WAY BACK DOWN TO ZERO AT REST AND HAS SINCE SEEMED TO BE OK. *TR

NHTSA ODI #10454236

74,000 miles · Feb 26, 2012
Air BagsCrash

WE HAD A CAR ACCIDENT AND THE AIRBAGS DIDN'T ACTIVATE...THE IMPACT WAS VERY HARD THAT THE INSURANCE COMPANY DECIDED TO TOTAL THE CAR BECAUSE THE DAMAGE WAS TO BIG...I AM PREGNANT AND I HAVE 2 MORE KIDS, AND I'M SO DISAPPOINTED WITH THIS EXPERIENCE THAT SOMETHING COULD HAPPENED TO ME OR MY KIDS IF WE WERE IN THE ACCIDENT. *TR

NHTSA ODI #10449350

72,000 miles · Feb 23, 2012
Electrical SystemExterior LightingFuel System, Gasoline

THE FIRST TIME I REALIZED MY GAS GAUGE WASN'T WORKING, I WAS SITTING AT A TRAFFIC LIGHT. THE GAS HAND READ HALF FULL. I MADE THE TURN AT THE INTERSECTION AND THE CAR STOPPED RUNNING. AT THIS POINT, I HAD NO CONTROL OVER THE STEERING WHEEL OR ANYTHING. TRAFFIC WAS HEAVY SO I WRESTLED WITH THE STEERING WHEEL TO COAST TO THE SIDE O…

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THE FIRST TIME I REALIZED MY GAS GAUGE WASN'T WORKING, I WAS SITTING AT A TRAFFIC LIGHT. THE GAS HAND READ HALF FULL. I MADE THE TURN AT THE INTERSECTION AND THE CAR STOPPED RUNNING. AT THIS POINT, I HAD NO CONTROL OVER THE STEERING WHEEL OR ANYTHING. TRAFFIC WAS HEAVY SO I WRESTLED WITH THE STEERING WHEEL TO COAST TO THE SIDE OF THE ROAD. SINCE THEN, OTHER GAUGES IN THE INSTRUMENT PANEL HAVE STOPPED WORKING. ALSO, MY HEADLIGHTS WORK ON BRIGHT ONLY. I HAD THE LOW BEAMS CHANGED AND THEY STILL DON'T WORK. THERE SEEMS TO BE A SERIOUS ELECTRICAL ISSUE WITH THIS VEHICLE. WITH THE NUMBER OF REPORTS, THERE SHOULD BE A RECALL TO ADDRESS THESE ISSUES. *TR

NHTSA ODI #10449145

90,000 miles · Feb 7, 2012
Fuel System, Gasoline

AFTER CHECKING ON LINE, IT APPEARS THAT THERE ARE MULTIPLE OWNERS OF THE ISUZU ASCENDER WHO HAVE EXPERIENCED FAILURE OF THEIR FUEL SENDING UNITS. WHEN I CALLED MY DEALER TO ASK ABOUT IT, HE MENTIONED THAT THE PART IS FAULTY AND IT WOULD NEED TO BE REPAIRED AT A GUESS OF $500. THIS PART GOING BAD ON A CUSTOMER WHILE DRIVING MA…

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AFTER CHECKING ON LINE, IT APPEARS THAT THERE ARE MULTIPLE OWNERS OF THE ISUZU ASCENDER WHO HAVE EXPERIENCED FAILURE OF THEIR FUEL SENDING UNITS. WHEN I CALLED MY DEALER TO ASK ABOUT IT, HE MENTIONED THAT THE PART IS FAULTY AND IT WOULD NEED TO BE REPAIRED AT A GUESS OF $500. THIS PART GOING BAD ON A CUSTOMER WHILE DRIVING MAY CAUSE AN ACCIDENT AS THE OWNER DOES NOT KNOW HOW MUCH FUEL IS LEFT. AT THE SAME TIME, THIS TRIPS THE CHECK ENGINE LIGHT WHICH MAY RESULT IN MANY STOPPING AND CALLING FOR A TOW. THIS PART NEEDS TO BE RECALLED DUE TO THE SHEER NUMBER OF COMPLAINTS I HAVE SEEN ONLINE. *TR

NHTSA ODI #10447025

120,235 miles · Nov 16, 2011
Engine And Engine CoolingVisibility

AIR CONDITION WORKS BUT IT CAN'T BE CHANGE TO FLOW DIRECTLY TO THE FRONT WITH THE CONTROL BUTTON, WILL COME OUT THRU THE SIDES , THE FRONT WINDSHIELD, AND BEHIND THE DRIVERS SEAT. *TR

NHTSA ODI #10436078

120,256 miles · Nov 16, 2011
Electrical System

INSTRUMENT PANEL CLUSTER PERFORMED ERRATICALLY THE SPEEDOMETER GOES CRAZY AND RESTARTING THE CAR CERTAIN AMOUNT OF TIMES THEN RESET IT TO 0 MPH. SOME GAUGES ARE NOT WORKING (OIL, RPM). *TR

NHTSA ODI #10436075

Mileage unknown · Sep 30, 2011
Fuel System, Gasoline

MY GAS GAUGE HAS FAILED SEVERAL TIMES. IN FACT NOW IT DOES NOT WORK AT ALL. I RAN OUT OF GAS WHILE DRIVING DOWN THE EXPRESSWAY GOING 75 MILES PER HOUR WHILE GAUGE WAS STILL READING HALF FULL. I JUST RECENTLY LEARNED THAT GM WAS BEING INVESTIGATED FOR THE GAS GAUGES OF MY YEAR OF CAR. MY CAR WAS MADE BY GM AT THAT POINT. IT …

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MY GAS GAUGE HAS FAILED SEVERAL TIMES. IN FACT NOW IT DOES NOT WORK AT ALL. I RAN OUT OF GAS WHILE DRIVING DOWN THE EXPRESSWAY GOING 75 MILES PER HOUR WHILE GAUGE WAS STILL READING HALF FULL. I JUST RECENTLY LEARNED THAT GM WAS BEING INVESTIGATED FOR THE GAS GAUGES OF MY YEAR OF CAR. MY CAR WAS MADE BY GM AT THAT POINT. IT IS ESSENTIALLY A CHEVY TRAILBLAZER WITH AN ISUZU STICKER ON IT. I AM UNCERTAIN IF THERE IS A RECALL, OR IF ONE HAS BEEN ISSUED. I WILL SAY THAT THREE GIRLS IN MY OFFICE ALL HAVE SIMILAR SUVS WITH YEAR 2005, AND ALL OF US HAVE EXPERIENCED THIS SAME PROBLEM. I JUST RESCUED ONE OF THEM YESTERDAY ON THE SIDE OF THE ROAD IN THE RAIN. I ALSO KNOW THAT THIS SAME PERSON'S CAR ALMOST CAUSED HER TO BE IN AN ACCIDENT AS WELL, BECAUSE HER CAR STALLED OUT IN THE MIDDLE OF THE EXPRESSWAY DUE TO THE GAS GAUGE ISSUE. THIS CANNOT BE A COINCIDENCE, AND IS A SEVERE SAFETY ISSUE. I HAVE NOT BEEN NOTIFIED OF A RECALL, BUT I WOULD LIKE TO BE INCLUDED IF THERE IS ONE. IF WE ARE TO BAIL OUT THE AUTO DEALERS THE LEAST THAT THEY CAN DO IS PROVIDE US WITH SAFE VEHICLES TO DRIVE. ONES THAT WE PURCHASED AND CONTINUE TO PAY ON. MY CAR IS UNDER 100,000 MILES STILL, AND THIS PROBLEM HAPPENED AT ROUGHLY 60,000 MILES AND IS ONGOING. *TR

NHTSA ODI #10427994

Mileage unknown · Sep 26, 2011
Electrical SystemService Brakes, Hydraulic

2005 ISUZU ASCENDER ~ OIL GAUGE STOPPED WORKING ABOUT 2MONTHS AGO (AUGUST 2011) AND THE SPEEDOMETER WENT OUT SHORTLY AFTER THAT. TOOK IT TO THE DEALERSHIP AND WAS TOLD "IT WAS PROBABLY THE FUSES". CHANGED THE FUSES OUT, BUT THAT DIDN'T HELP! IN FACT THERE IS EVEN ANOTHER PROBLEM NOW! THE SYSTEM PANEL LIT UP... (SEPT.2011)...W/ …

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2005 ISUZU ASCENDER ~ OIL GAUGE STOPPED WORKING ABOUT 2MONTHS AGO (AUGUST 2011) AND THE SPEEDOMETER WENT OUT SHORTLY AFTER THAT. TOOK IT TO THE DEALERSHIP AND WAS TOLD "IT WAS PROBABLY THE FUSES". CHANGED THE FUSES OUT, BUT THAT DIDN'T HELP! IN FACT THERE IS EVEN ANOTHER PROBLEM NOW! THE SYSTEM PANEL LIT UP... (SEPT.2011)...W/ LIGHTS AND BELLS THAT READ (CHECK BRAKE SYSTEM) WHICH IS A SAFETY ISSUE, SO I IMMEDIATELY TOOK IT IN TO BE CHECKED AND WAS TOLD "THE BRAKES ARE ALL IN GREAT CONDITION AND WAS NOT THE PROBLEM!" WELL THERE IS A BIG PROBLEM IF ALL THE OWNERS OF THIS TYPE OF VEHICLE ARE ALL HAVING THE SAME ISSUES AND NOT GETTING ANY HELP FROM THE MANUFACTURER!!!! *TR

NHTSA ODI #10427138

Mileage unknown · Aug 31, 2011
Electrical SystemEngine And Engine CoolingFuel System, Gasoline

I FIRST DISCOVERED THAT THE FUEL GAUGE WAS DEFECTIVE APPROXIMATELY OVER A YR AGO. THERE WAS A DIAGNOSTIC PERFORMED WITH A RECOMMENDATION FOR REPAIRS. I ALSO DISCOVERED THAT THERE WAS A SIMILAR PROBLEM WITH THE 2006 MODEL THAT MAY OR MAY NOT HAVE BEEN RECALLED. THIS WAS TOO MUCH OF A COINCIDENCE AS THERE WAS NO RECALL ISSUED IN M…

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I FIRST DISCOVERED THAT THE FUEL GAUGE WAS DEFECTIVE APPROXIMATELY OVER A YR AGO. THERE WAS A DIAGNOSTIC PERFORMED WITH A RECOMMENDATION FOR REPAIRS. I ALSO DISCOVERED THAT THERE WAS A SIMILAR PROBLEM WITH THE 2006 MODEL THAT MAY OR MAY NOT HAVE BEEN RECALLED. THIS WAS TOO MUCH OF A COINCIDENCE AS THERE WAS NO RECALL ISSUED IN MY 2005 MODEL. SIMILAR PROBLEM IS OCCURRING WITH THE OIL GAUGE WHICH IS NOW AS ERRATIC IN FUNCTIONING. MY VEHICLE IS WELL MAINTAINED AND THEREFORE, I CONSIDER THIS OCCURRENCES TO BE A MANUFACTURER'S ERROR, WHICH SHOULD OBVIOUSLY BE LABELED AS A SAFETY DEFECT. I HAVE BEEN STRANDED ON THE ROAD A FEW TIMES AS A RESULT OF THE ERRATIC FUNCTIONING OF MY GAS GAUGE. I SUSPECT THAT IT MAY LEAD TO OTHER ISSUES OR CONCERNS. AS A CUSTOMER, I RECOMMEND THAT THE ISUZU ASCENDER MANUFACTURERS DO THE RIGHT THING BY ADVISING CONSUMERS, AND TAKING APPROPRIATE STEPS TO CORRECT THESE SAFETY CONCERNS. *TR

NHTSA ODI #10422760

Official recalls

1

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

1

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.