Recall 24V639 covers 12 2021-2023 Atc Commercial Office trailers with CK7G generators for exhaust port failure. Repair is free at any franchised Atc dealer.
Atc is recalling 12 2021-2023 Commercial Office trailers equipped with CK7G generators because the insulated exhaust port outlet can fail and damage nearby components. An exhaust port failure increases the risk of a fire, and Atc dealers will complete the recall repair free of charge.
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What's wrong?
The CK7G generator in 2021-2023 Atc Commercial Office trailers supplies electrical power for the office equipment and systems built into the trailer. Its exhaust port outlet carries hot exhaust gas from the generator toward the muffler inlet pipe. That outlet is insulated so heat stays contained instead of reaching nearby components.
On affected trailers, the insulated exhaust port outlet can degrade during generator operation and fail before it should. Once that outlet breaks down, heat from the exhaust path can damage surrounding parts. The concern is fire risk, which is why the repair installs parts kits on the generator to remove that hazard.
There is no warning sign before failure. Do not rely on a smell, noise, light, or visible damage to decide whether the generator is safe; the VIN and generator serial information decide whether this recall applies.
Who's affected?
Spans the 2021, 2022, and 2023 model years, all tied to the same CK7G accessory generator.
| 2023 Atc Commercial Office | Accessory generator |
|---|---|
| 2022 Atc Commercial Office | Accessory generator |
| 2021 Atc Commercial Office | Accessory generator |
| Units affected | 12 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific trailer is included.
What's the safety risk?
An exhaust port failure increases the risk of a fire. No warning sign is listed before failure, so confirm whether your VIN is included and schedule the repair soon. Until the inspection is complete, stop using the affected equipment if you notice exhaust damage or overheating. Repair is free at any franchised Atc dealer.
What should I do?
- Check your VIN to confirm your 2021-2023 Atc Commercial Office trailer is included in this recall.
- Contact a franchised Atc dealer to schedule the CK7G generator exhaust inspection and free exhaust-pipe, gasket, and muffler repair that addresses the exhaust port failure.
- Bring the recall notice if Atc mailed one, or reference recall number 24V639 when you call.
- Avoid using the CK7G generator until the exhaust repair is complete.
- Call Atc customer service at 1-877-441-2440 with questions about scheduling or the free repair.
What happens at the repair
At the dealer, an Atc technician works with CK Power to inspect the CK7G generator exhaust system. The technician replaces the exhaust pipe, gaskets, and mufflers as needed. Parts and labor are covered under the recall. ATC or CK Power will reimburse owners who paid to repair this defect before the owner notification was sent. Bring documentation for the prior repair cost so the service desk can route the claim correctly.
| Reimbursement | Reimbursement available |
|---|
Timeline
| August 26, 2024 | NHTSA published the recall |
|---|---|
| September 5, 2024 | Owner notification mailed |
| September 9, 2024 | Dealer notification began |
| September 9, 2024 | Interim owner notification (was planned for this date) |
| September 13, 2024 | Dealer notification ended |
Frequently asked questions
What is recall 24V639?
Recall 24V639 covers 12 2021-2023 Atc Commercial Office trailers equipped with CK7G generators. The insulated exhaust port outlet can fail and damage other components, increasing the risk of a fire. Atc and CK Power will inspect and replace the exhaust pipe, gaskets and mufflers as needed for free.
What should I do if my 2021-2023 Atc Commercial Office is on this recall?
Check your VIN to confirm your specific trailer is included in recall 24V639. If it is, contact Atc customer service at 1-877-441-2440, ext. 3422, and ask how to arrange the CK7G generator exhaust inspection and repair. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair recall defects at no cost to owners. Atc will work with CK Power to inspect the CK7G generator exhaust system and replace the exhaust pipe, gaskets and mufflers as needed free of charge.
What is the safety risk?
The safety risk is fire. On affected 2021-2023 Atc Commercial Office trailers, the insulated exhaust port outlet on the CK7G generator can fail, which can damage nearby components and increase fire risk. Confirm your VIN before arranging the free repair.
When were owners notified about recall 24V639?
Atc mailed owner notification letters on September 5, 2024. If you own a 2021-2023 Atc Commercial Office trailer and did not receive a letter, check your VIN and contact Atc customer service with recall number 24V639.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V639000 |
|---|---|
| Atc customer service | 1-877-441-2440 |
| NHTSA recall # | 24V639 |
| NHTSA recall # (full) | 24V639000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →