Recall 20V339 covers 71 2020-2021 Thor Motor Coach motorhomes with window glass that can detach. Repair is free at any franchised Thor Motor Coach dealer.
Thor Motor Coach is recalling 71 2020-2021 motorhomes, including Axis, Compass, Delano, Gemini, Ace, Vegas, Outlaw, Hurricane, Windsport, and Four Winds models, because the adhesive bond on frameless windows can fail and let the glass fall out. If the glass detaches while moving, it can become a projectile and increase crash risk; Thor Motor Coach dealers will complete the free repair.
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What's wrong?
On the 2020-2021 Thor Motor Coach motorhomes in campaign 20V339, the problem is in the frameless side or rear window assembly. The glass is bonded to a metal hinge frame, and that bond is supposed to hold the glass in place while the window opens, closes, and moves with the coach body.
On affected motorhomes, the adhesive bond between the glass and the hinge or latch extrusion is poor. Thor Motor Coach traced the problem to LCI-supplied windows made with an adhesive that did not hold these parts together as designed. If the bond lets go, the glass can detach from the frame and fall out.
The listed warning sign is found by inspection, not by a dashboard alert. Poor adhesion can be detected with a pull test, which means a technician physically checks whether the glass is still securely bonded to the frame.
Who's affected?
Spans 10 Thor Motor Coach models across the 2020 and 2021 model years, all tied to the same side or rear glass visibility component.
| 2020 Thor Motor Coach Axis | visibility component |
|---|---|
| 2020 Thor Motor Coach Compass | visibility component |
| 2020 Thor Motor Coach Delano | visibility component |
| 2020 Thor Motor Coach Gemini | visibility component |
| 2021 Thor Motor Coach Ace | visibility component |
| 2020 Thor Motor Coach Vegas | visibility component |
| 2020 Thor Motor Coach Ace | visibility component |
| 2020 Thor Motor Coach Outlaw | visibility component |
| 2020 Thor Motor Coach Hurricane | visibility component |
| 2020 Thor Motor Coach Windsport | visibility component |
| 2021 Thor Motor Coach Four Winds | visibility component |
| Units affected | 71 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific motorhome.
What's the safety risk?
If a frameless window detaches while the vehicle is moving, the glass can become a projectile and increase crash risk. Poor adhesion is found with a pull test, so have the dealer inspect the glass bond and replace the window if needed. Repair is free at any franchised Thor Motor Coach dealer.
What should I do?
- Check your VIN to confirm your 2020-2021 Thor Motor Coach Axis, Compass, Delano, Gemini, Ace, Vegas, Outlaw, Hurricane, Windsport, or Four Winds motorhome is included in this recall.
- Contact a franchised Thor Motor Coach dealer to schedule the free frameless-window adhesive inspection and window replacement that addresses glass detachment.
- Bring the recall notice if Thor Motor Coach mailed one. If not, reference recall number 20V339 and Thor Motor Coach recall RC000192 when you call.
- Avoid driving if window glass has detached or is separating from the frameless window assembly until the dealer inspects it.
What happens at the repair
At the dealer, a Thor Motor Coach technician inspects the frameless windows for proper adhesive bond strength between the glass and metal hinge frame. Any window that does not meet the recall standard is replaced free of charge. Parts and labor are covered under the recall. Out-of-pocket repairs already paid are handled through the existing manufacturer's warranty, not through a separate reimbursement program, because the affected motorhomes remain under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| June 9, 2020 | NHTSA published the recall |
|---|---|
| July 5, 2020 | Dealer notification began |
| July 5, 2020 | Interim owner notification (was planned for this date) |
| July 10, 2020 | Owner notification mailed |
| July 12, 2020 | Dealer notification ended |
Frequently asked questions
What is recall 20V339?
Recall 20V339 covers 71 2020-2021 Thor Motor Coach motorhomes with frameless window glass that can detach from the metal hinge frame. If the glass separates while the vehicle is moving, it can become a projectile and increase crash risk. Dealers inspect the windows and replace them as needed for free.
What should I do if my 2020-2021 Thor Motor Coach motorhome is on this recall?
Check your VIN to confirm your specific motorhome is included in recall 20V339. If it is, contact a franchised Thor Motor Coach dealer to schedule the frameless window inspection. Reference recall number 20V339 and Thor Motor Coach recall RC000192 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to fix the defect at no cost. Thor Motor Coach dealers will inspect the frameless windows for proper adhesive bond strength and replace affected windows as needed free of charge.
What is the safety risk?
The risk is detached window glass while the motorhome is moving. NHTSA campaign 20V339 says the glass can separate from the hinge frame, become a projectile, and increase crash risk. Until the repair is complete, confirm your VIN and schedule the dealer inspection.
When were owners notified about this Thor Motor Coach recall?
Thor Motor Coach began the recall on July 10, 2020. If you bought the motorhome used or never received a letter, check your VIN to confirm whether your specific Axis, Compass, Delano, Gemini, Ace, Vegas, Outlaw, Hurricane, Windsport, or Four Winds is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V339000 |
|---|---|
| Thor Motor Coach customer service | 1-877-855-2867 |
| NHTSA recall # | 20V339 |
| NHTSA recall # (full) | 20V339000 |
Source documents
-
Download Quarterly Report (PDF) - Download Misc. Document (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →