Recall 12V406 covers 278,174 2006-2007 Isuzu Ascender, Trailblazer, Envoy, Rainier, and 9-7X vehicles for door-module fire risk. Repair is free at franchised Isuzu dealers.
Isuzu recall 12V406 covers 278,174 2006-2007 Ascender, Trailblazer, Envoy, Rainier, and 9-7X SUVs in states where fluid can enter the driver's door module and corrode the circuit board. A short can disable door locks or windows, overheat the module, and lead to a fire even while parked; the dealer repair will be free once available.
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What's wrong?
In NHTSA campaign 12V406, the problem is in the driver's door module on 2006-2007 Ascender, Trailblazer, Envoy, Rainier, and 9-7X vehicles. That module is the electronic control unit inside the driver's door. It sends switch commands for the power windows and power door locks through a circuit board.
Fluid can get into the driver's door module. Once moisture reaches the circuit board, corrosion can form and create an electrical short. That short can make the power window or power door lock switches work intermittently or stop working. It can also overheat the module, melt door-module parts, and produce odor, smoke, or fire.
There is no warning sign before failure. After the short starts, an owner can notice power windows or locks that work only part of the time, stop working, or are followed by an unusual odor or smoke from the driver's door area.
Who's affected?
Covers five SUV nameplates across the 2006 and 2007 model years, all tied to the power-window controls and electrical system.
| 2007 Isuzu Ascender | visibility component |
|---|---|
| 2007 Isuzu Ascender | electrical system |
| 2007 Chevrolet Trailblazer | visibility component |
| 2007 Chevrolet Trailblazer | electrical system |
| 2007 GMC Envoy | visibility component |
| 2007 GMC Envoy | electrical system |
| 2006 Chevrolet Trailblazer | visibility component |
| 2006 Chevrolet Trailblazer | electrical system |
| 2006 Isuzu Ascender | visibility component |
| 2006 Isuzu Ascender | electrical system |
| 2006 GMC Envoy | visibility component |
| 2006 GMC Envoy | electrical system |
| 2006 Buick Rainier | visibility component |
| 2006 Buick Rainier | electrical system |
| 2006 Saab 9-7X | visibility component |
| 2006 Saab 9-7X | electrical system |
| 2007 Saab 9-7X | visibility component |
| 2007 Saab 9-7X | electrical system |
| 2007 Buick Rainier | visibility component |
| 2007 Buick Rainier | electrical system |
| Units affected | 278,174 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific SUV is included.
What's the safety risk?
A short in the circuit board can lead to a fire, even while the vehicle is parked and not in use. Park outside until the remedy is complete. A vehicle fire increases the risk of personal injury. Repair will be free at any franchised Isuzu dealer once available.
What should I do?
- Check your VIN to confirm your 2006-2007 Isuzu Ascender, Trailblazer, Envoy, Rainier, or 9-7X is included in this recall.
- Contact Isuzu customer service or a franchised Isuzu dealer to ask whether the driver-door-module repair is open for your VIN.
- Park outside and away from structures until the driver-door-module repair is complete.
- Mention recall number 12V406 when you call, and describe any power-window, power-lock, odor, smoke, or door-module overheating signs.
- Bring the owner notice if you have it, and ask the dealer to complete the free repair tied to the driver-door-module short and fire risk.
What happens at the repair
The remedy notice says parts were expected to be available in March 2013, with Isuzu owners notified when parts were ready. It does not specify the exact dealer procedure, so do not assume a named part replacement until the service desk confirms the recall instructions for your VIN. Once the final repair is open, an Isuzu technician will address the driver door module issue covered by the recall. Parts and labor are free under the recall.
Timeline
| August 16, 2012 | NHTSA published the recall |
|---|---|
| February 26, 2013 | Owner notification mailed |
Frequently asked questions
What is recall 12V406?
Recall 12V406 covers 278,174 2006-2007 Isuzu Ascender, Trailblazer, Envoy, Rainier, and 9-7X vehicles with a driver's door module that can corrode after fluid enters it. The short can affect power locks or windows, overheat the module, and increase fire risk.
What should I do if my 2006-2007 Isuzu Ascender, Trailblazer, Envoy, Rainier, or 9-7X is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 12V406. If it is, contact a franchised Isuzu dealer and ask for the driver's door module recall repair. Reference recall number 12V406 when you call. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. For recall 12V406, the driver's door module repair is handled through a franchised Isuzu dealer with parts and labor covered.
What is the safety risk?
The safety risk is fire. NHTSA says a short in the driver's door module circuit board can lead to overheating and fire, even when the vehicle is parked and not in use. Park outside until the dealer completes the recall repair.
What warning signs should I watch for?
Watch for power door locks or power windows that work intermittently or stop working, plus odor, smoke, or signs of heat at the driver's door controls. Those signs match the driver's door module problem described in recall 12V406.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/12V406000 |
|---|---|
| Isuzu customer service | 1-800-521-7300 |
| NHTSA recall # | 12V406 |
| NHTSA recall # (full) | 12V406000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Recall Document (PDF) (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Quarterly Report (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →