The 2004 Isuzu Ascender has 1 NHTSA recall campaign affecting an estimated 286,478 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 88 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.
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
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…
Complaints by component
ELECTRICAL SYSTEM
23
1fires
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
11
FUEL SYSTEM, GASOLINE
8
FUEL/PROPULSION SYSTEM
7
EXTERIOR LIGHTING
5
ENGINE
4
POWER TRAIN
2
SEAT BELTS:FRONT
2
AIR BAGS
1
ELECTRICAL SYSTEM:12V/24V/48V BATTERY
1
Total complaints88
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“The gauge cluster is malfunctioning”
“The low beams on my headlights will go out without warning while driving at night. My daytime running lights also will turn off without warning and turn back on but this is not as much of a safety issue as when it happens during nighttime driving. Sometimes my headlights will not work from the…”
“Tl* the contact owns a 2004 isuzu ascender. While driving approximately 60 mph, the vehicle decelerated without warning. The failure occurred numerous times. The vehicle was taken to an independent mechanic where it was diagnosed that the bank one sensor was running rich and the bank two sensor…”
“While driving my cars brakelight came on and the car started to accelerate faster and faster. Pullled over as soon as I could and stopped the car and turned the engine off. The check gauges warning light comes on even when the car is sitting idle or when I pull up and stop at a red light it comes…”
“While driving my cars brakelight came on and the car started to accelerate faster and faster. Pullled over as soon as I could and stopped the car and turned the engine off. The check gauges warning light comes on even when the car is sitting idle or when I pull up and stop at a red light it comes…”
“Recall has been issued on faulty gas tank. Had car inspected by isuzu facility 2/4/16 and new part(s) ordered. Cannot get any information as to when part will be in and my car repaired. In the meantime, driving with faulty, gas-leaking, probably dangerous car. Gm apparently not communicating with…”
“Fuel tank has leaking seals, which is causing fuel to leak and the smell of fuel into cabin area of vehicle and vehicle rejected during state inspection. Part not available until after may.took it to repair facility, was told it was unsafe to drive then was told to come pick up the vehicle. Isuzu…”
“Had auto towed to midas after inability to start, attempted jump start, unsuccessful. Battery replaced on 12/28/15. Drove auto next several days and on 12/30/15 drove to pick up my husband, shut off car in park. Unable to start vehicle again, keys could not be removed. Keys were in lock position…”
Defect investigations
InvestigationEA07009 Opened 2007-07-10 · closed 2008-08-28
FUEL PUMP MODULE LEAKS GASOLINE
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…
InvestigationRQ17002 Opened 2017-04-24 · closed 2021-03-29
Loss of 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…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2004 Isuzu Ascender as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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