Recall 25V481 covers 418 2023-2026 Tiffin GH1, GT1, Convoy, and GH2 motorhomes for engine-stalling alternator programming. Free repair at any franchised Tiffin dealer.
Tiffin is recalling 418 2023-2026 GH1, GT1, Convoy, and GH2 motorhomes because the secondary alternator controller programming was not properly updated. That programming fault can stall the engine and increase crash risk, and Tiffin dealers will update the controller software free of charge.
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What's wrong?
The secondary alternator controller on the 2023-2026 Tiffin GH1, GT1, Convoy, and GH2 motorhomes manages when the extra alternator charges the coach batteries. That alternator supports the motorhome's electrical load separate from normal chassis charging. The controller is supposed to keep charging demand away from idle conditions on the 2.0 liter Mercedes Benz chassis.
On these motorhomes, the controller programming was not updated after Mercedes Benz moved from the earlier 3.0 liter V6 chassis to the newer 2.0 liter engine. When the coach batteries are low, the secondary alternator can turn on while the engine is idling or running at or below 1200 RPM. That charging load pulls power away from the engine, which can cause loss of throttle response and an engine stall at idle.
There is no warning sign before failure. The issue can appear when the batteries are low and the engine is at idle or low speed.
Who's affected?
Covers GH1, GT1, Convoy, and GH2 motorhomes across the 2023-2026 model years, all tied to the alternator regulator.
| 2024 Tiffin GH1 | electrical system |
|---|---|
| 2025 Tiffin GH1 | electrical system |
| 2026 Tiffin GH1 | electrical system |
| 2025 Tiffin GT1 | electrical system |
| 2023 Tiffin GH1 | electrical system |
| 2024 Tiffin Convoy | electrical system |
| 2026 Tiffin GH2 | electrical system |
| Units affected | 418 |
| 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 motorhome is included.
What's the safety risk?
Improper alternator programming can cause the engine to stall while the vehicle is moving, increasing the risk of a crash. There is no warning sign before the stall, so treat any engine shutoff or rough running as a reason to contact the dealer promptly. Repair is free at any franchised Tiffin dealer.
What should I do?
- Check your VIN to confirm your 2023-2026 Tiffin GH1, GT1, Convoy, or GH2 is included in this recall.
- Contact a franchised Tiffin dealer to schedule the free wire-harness installation and alternator programming update that fixes the engine-stall risk.
- Bring Tiffin's mailed recall notice if you have it, or reference recall number 25V481 when you call.
- Call Tiffin customer service at 1-256-356-8661 with questions about repair scheduling.
- Drive cautiously until the repair is complete, and leave extra room to react if the engine stalls.
What happens at the repair
At the dealer, a Tiffin technician installs a wire harness and updates the alternator programming for the secondary alternator controller. The recall repair is free, with parts and labor covered. If you already paid for this repair before the recall notice, Tiffin uses its general reimbursement plan on file for documented costs. Bring invoices, receipts, and any related repair paperwork to the service desk, or contact Tiffin customer service before your appointment so the claim is routed correctly.
| Reimbursement | Reimbursement available |
|---|
Timeline
| July 23, 2025 | NHTSA published the recall |
|---|---|
| September 19, 2025 | Dealer notification began |
| September 19, 2025 | Dealer notification ended |
| September 19, 2025 | Owner notification mailed |
Frequently asked questions
What is recall 25V481?
Recall 25V481 covers 418 Tiffin motorhomes with 2.0-liter engines where the secondary alternator controller programming was not properly updated. The affected vehicles are 2024 Convoy, 2023-2026 GH1, 2025 GT1, and 2026 GH2 motorhomes. Improper programming can stall the engine and increase crash risk.
What should I do if my 2023-2026 Tiffin GH1, GT1, Convoy, or GH2 is on this recall?
Check your VIN to confirm your specific motorhome is included in recall 25V481. If it is, contact a franchised Tiffin dealer to schedule the wire harness installation and alternator programming update. Reference recall number 25V481 when you call. The repair is free.
Does the recall repair cost anything?
No. Federal recall law requires manufacturers to repair recall defects at no cost, and Tiffin dealers will install the wire harness and update the alternator programming free of charge.
What is the safety risk?
The safety risk is engine stalling. Tiffin says improper secondary alternator controller programming can cause the engine to stall, increasing the risk of a crash. If your VIN is included, schedule the free dealer repair and ask the service desk about safe handling before your appointment.
When were owners notified about recall 25V481?
Tiffin mailed owner notification letters on September 19, 2025. If you bought the motorhome used or never received a letter, check your VIN and contact a franchised Tiffin dealer. You can also call Tiffin customer service at 1-256-356-8661 and reference TIF-145.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/25V481000 |
|---|---|
| Tiffin customer service | 1-256-356-8661 |
| NHTSA recall # | 25V481 |
| NHTSA recall # (full) | 25V481000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Document (PDF) (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 19, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →