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CarsLore / Isuzu / Ascender / 2004

2004 Isuzu Ascender

64 owner complaints — the most of any Ascender model years. 1 recall, 25 service bulletins.

64complaints · 0 crashes, 2 fires
1recalls
25manufacturer bulletins
80,000 mimedian mileage at failure

Problems owners report

Complaints filed with NHTSA about the 2004 Isuzu Ascender, by the system named in each complaint. One complaint can name several.

  • Electrical system34
  • Fuel system, gasoline8
  • Fuel/propulsion system7
  • Exterior lighting6
  • Engine4
  • Visibility4
  • Seat belts3
  • Power train2
  • Service brakes, hydraulic2
  • Engine and engine cooling2

NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 0 injuries and 0 deaths reported

Compared with other years

’02’04’06’0864’02’04’05’0864
200320042005200620072008

NHTSA ODI complaints by model year

Fatal crashes in the US

From 2020 to 2023, 6 2004 Ascender vehicles were involved in crashes on US public roads in which someone died; 4 people died inside them, and 5 of the vehicles rolled over. This is a count, not a crash rate: it grows with the number of cars on the road.

NHTSA Fatality Analysis Reporting System (FARS), crash years 2020–2023 (public domain)

New York safety inspections

At its first New York inspection the 2004 Isuzu Ascender failed the safety check 4.13% of the time — 87% more often than the average 2004 passenger car (2.21%). Median odometer at inspection: 148,093 miles.

121first inspections
4.13%failed on safety
148,093 mimedian odometer
0.0%1.6%3.2%’04’064.1%0.0%1.6%3.2%’04’064.1%

NY DMV Vehicle Inspections (vezn-fmmk), initial inspections since Aug 2021 · how we count

Recalls

05V198000 · Exterior lighting5 May 2005 · 286,478 vehicles

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.

Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.

NHTSA recalls · summaries in NHTSA's own words

Service bulletins

What Isuzu told its dealers about the 2004 Isuzu Ascender: known faults, fixes and updates.

BulletinSummary
10237146This bulletin outlines the procedures for using the Alpine Exchange Program (the "Exchange Program"). The Exchange Program must be used when any Alpine radio or other component covered by this bulletin is repaired under warranty and may also be used for radio and component repairs not covered under warranty. Contact Alpine directly for pricing and payment methods applicable to radio and component repairs not covered under warranty.
10218932Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural recommendations to improve dealer efficiency when submitting Parts Warranty claims. We strongly recommend dealers follow these procedures in order to avoid delays in Parts Warranty claim payments and/or claim chargeback. This bulletin was revised to add a Parts Warranty Form
10218927Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural recommendations to improve dealer efficiency when submitting Parts Warranty claims. We strongly recommend dealers follow these procedures in order to avoid delays in Parts Warranty claim payments and/or claim chargeback.
10217004The Isuzu Commercial Truck of America (ICTA) Service Technical Assistance Center (TAC) provides diagnostic support to Isuzu dealer technicians repairing Isuzu vehicles in and out of vehicle warranty. A TAC case number will be issued solely for information tracking purposes and future contact reference.
10217001The following is a list of the Isuzu-recommended Threebond product part numbers identified in the various Isuzu Workshop Manuals and bulletins. If a Threebond product is unavailable, we recommend that you utilize the chart below to find equivalent of similar products (when available) from Loctite and Permatex.
10212625This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
10176607This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
10154566This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
10154552This preliminary information document communicates a tip on the way to diagnose possible induction or exhaust air leaks using the evaporative emission cart smoke machine and ultrasonic leak detectortools.
10154306This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
10154299This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
10151868This Preliminary Information communication provides information to the technician about being unable to receive OnStar ?Over The Air? updates. Technician will need to press the OnStar button and verify they have an active account and that the call connects with data and location.
10141371This Preliminary Information communication provides information to the technician about connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.
10137901This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.
10135337This Preliminary Information communication provides information to the technician about vehicles that are travelling from Canada to the United States. While in the United States they are unable to receive Turn-by-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn-By-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Se
10135322This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
10126285This preliminary bulletin provides procedures on how to reset or refresh the XM radio receiver is the customers states that they only get a few channels.
10125956This Preliminary Information communication provides information to the technician about vehicles that may not receiving all channels on the XM band. Technician will need to use a scan tool and verify current Digital Radio Receiver Status under Data Display. Technician will need to look at the second line labeled Digital Radio Receiver Status will display a number of 00 - 04. Technician will repair per the status code.
10125953This Preliminary Information communication provides information to the technician on the programming and activation of the OnStar system. For many 2008 and prior model year GM vehicles, the programming is performed using the Tech 2 and the activation is initiated by a Service Programming System. For the 2010 and UP model year vehicles, the OnStar set-up procedure and OnStar Activation request have been combined into a single programming event called OnStar Set-up and Activation in Service Programming System.
10125106This Preliminary Information communication provides information to the technician about vehicle's odometer appears to be inaccurate relative to a known distance traveled. Technician should obtain a hand-held GPS unit to test the odometer. If a hand held GPS unit is not available, the only other option is to verify the miles traveled using a surveyor's wheel or a dynamometer.
10118233This Preliminary Information communication provides information to the technician about installing General Motors Accessory pats. Technician can check Service Information for some accessories. Technician can also contact Partect for assistance. Technician can also contact Techline Customer Support Center for programming issues.
10115143This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
10114894This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Mot
10114474This Preliminary Information communication provides information to the technician about connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.
10114470This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system.

NHTSA manufacturer communications (public domain)

NHTSA investigations

RQ17002 · Exterior lighting:headlightsopened 24 Apr 2017 · closed 29 Mar 2021

Loss of Headlights

EA07009 · Fuel system, gasoline:delivery:fuel pumpopened 10 Jul 2007 · closed 28 Aug 2008

FUEL PUMP MODULE LEAKS GASOLINE

NHTSA Office of Defects Investigation