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Transmission and drivetrainPart report

2005 Isuzu Ascender Transmission and drivetrain Problems

Complaints
3about this part
Share
5%of 64 total for the year
Median mileage
70,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the transmission and drivetrain of the 2005 Isuzu Ascender, 5% of the 64 complaints for this model year. Where a mileage was given, the median is 70,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The check engine light( thermostat), speedometer, fuel gauge and now the oil pressure gauge have stopped working or work sporadically and inaccurately. These problems are listed in order of failure and they started at approximately 85,000mi and the last was at 106,000 miles. If I had known this vehicle was made by GM, I would not have bought it. It will definitely be the last GM product in my household. I have had many and all but one had numerous problems. A footnote: a part of the gearshift linkage broke at approx. 95,000mi.”

NHTSA complaint #10558060, filed 2014-01, 80,000 miles

“Vehicle suddenly 'shuttered' at 65mph on the tollway and the instrument panel failed completely, indicating brake system failure. Concurrently, indicator light for rear drive train also showing failure. Unsure if these issues were related or coincidental. Diagnostics/testing by mechanic resulted in replacement of several electrical system parts, including A/C delco trans selector switch; A/C delco speed sensor; A/C delco ignition switch, and repair of 4-wheel drive engine harness, totaling expense of $808.37. Since repair, no further incident has occurred with these components. …”

NHTSA complaint #10621194, filed 2014-08, 70,000 miles

“The contact owns a 2005 Isuzu Ascender. The contact stated the instrument panel became inoperable. The contact mentioned that the horn would come on intermittently. Also, the contact stated that the drivers side window glass fell inside the vehicle and fractured. In addition, the contact mentioned that it was difficult to shift gears. The vehicle was not taken to a dealer. The manufacturer was made aware of the failure. The failure mileage was 50,000.”

NHTSA complaint #10626771, filed 2014-08, 50,000 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
200626%
200535%
200423%
2003411%

Other parts of the 2005 Isuzu Ascender

Electrical system
27 complaintsFuel system
24 complaintsAir bags
9 complaintsExterior lighting
5 complaintsVehicle speed control
4 complaintsEngine cooling
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsSteering
2 complaintsBrakes
1 complaintsEngine
1 complaintsSuspension
1 complaintsTires
1 complaints

← All problems reported for the 2005 Isuzu Ascender

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology