Recall 25V400 affects 965 2018-2025 Altec trucks for a voltage spike damaging the transfer case control module. Repair is free at a franchised Altec dealer.
Altec is recalling 965 2018-2025 L Series Aerial Device, Service Body, Ls Series, Ta Class, and At Series trucks because a voltage spike in the Power Distribution Module (PDM 10) circuit can damage the Transfer Case Control Module. That damage can disrupt chassis functions and affect handling, control, or brake performance; Altec dealers will complete the recall repair free of charge.
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What's wrong?
The Altec Power Distribution Module, or PDM 10, is the electrical hub that feeds power from the chassis ignition circuit to equipment and body functions on these 2018-2025 Altec trucks. It helps the upfit communicate with chassis systems that support work functions, mirrors, camera display, and other powered features. The transfer case control module, or TCCM, manages part of the chassis drive system.
On affected trucks, the ignition hot circuit in the PDM 10 can send a voltage spike back into the chassis ignition circuit. Repeated spikes can damage the TCCM and disturb other functions on the same circuit, including the PTO switch, inside rearview mirror, and rearview camera. The remedy adds a diode, a one-way electrical part that blocks the voltage from feeding back into the chassis circuit.
There is no warning sign before failure. An owner or operator first notices the problem when a chassis function stops working correctly or behaves unexpectedly.
Who's affected?
Spans five Altec body and aerial-device lines across 2018-2025, all tied to the same wiring component.
| 2019 Altec L Series Aerial Device | wiring |
|---|---|
| 2025 Altec Service Body | wiring |
| 2024 Altec Service Body | wiring |
| 2024 Altec Ls Series | wiring |
| 2023 Altec Service Body | wiring |
| 2023 Altec Ls Series | wiring |
| 2022 Altec Service Body | wiring |
| 2022 Altec Ls Series | wiring |
| 2021 Altec Service Body | wiring |
| 2021 Altec Ls Series | wiring |
| 2020 Altec Ta Class | wiring |
| 2020 Altec Service Body | wiring |
| 2020 Altec Ls Series | wiring |
| 2019 Altec Service Body | wiring |
| 2019 Altec Ls Series | wiring |
| 2018 Altec Service Body | wiring |
| 2018 Altec Ls Series | wiring |
| 2025 Altec At Series | wiring |
| 2025 Altec Ls Series | wiring |
| 2024 Altec At Series | wiring |
| 2023 Altec At Series | wiring |
| 2022 Altec At Series | wiring |
| 2021 Altec At Series | wiring |
| 2020 Altec At Series | wiring |
| 2019 Altec At Series | wiring |
| 2018 Altec At Series | wiring |
| Units affected | 965 |
| 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 vehicle is included.
What's the safety risk?
A damaged TCCM can disrupt chassis functions and reduce handling, control, or brake performance, increasing the risk of a crash. There is no warning sign before failure. If your VIN is included, schedule the recall repair soon and limit use until Altec confirms the repair is complete. Repair is free at any franchised Altec dealer.
What should I do?
- Check your VIN to confirm your 2018-2025 Altec L Series Aerial Device, Service Body, Ls Series, Ta Class, or At Series truck is included in this recall.
- Contact a franchised Altec dealer to schedule the free diode installation that protects the ignition hot circuit from voltage spikes that damage the Transfer Case Control Module.
- Bring the recall notice if Altec mailed one, and reference recall number 25V400 and Altec recall CSN-3229 when you call.
- Call Altec customer service at 1-877-462-5832 with questions about scheduling or repair status.
- Drive cautiously until the repair is complete. Watch for disrupted chassis functions, including the PTO switch, rearview mirror, or rearview camera.
What happens at the repair
At the dealer, an Altec technician installs a diode in the ignition hot circuit. That diode helps control the voltage spike that can damage the Transfer Case Control Module and interrupt chassis functions such as the PTO switch, rearview mirror, or rearview camera. The recall repair is free, with parts and labor covered. Altec's Warranty Policy also covers reimbursement for owners who already paid for a repair tied to this problem before the recall notice. Bring repair documentation to the service desk or contact Altec customer service for the claim process.
| Reimbursement | Reimbursement available |
|---|
Timeline
| June 13, 2025 | NHTSA published the recall |
|---|---|
| August 8, 2025 | Owner notification mailed |
Frequently asked questions
What is recall 25V400?
Recall 25V400 covers 965 2018-2025 Altec L Series Aerial Device, Service Body, Ls Series, Ta Class, and At Series trucks with a PDM 10 circuit issue. A voltage spike can damage the TCCM and disrupt chassis functions. Altec will install a diode for free.
What should I do if my 2018-2025 Altec L Series Aerial Device, Service Body, Ls Series, Ta Class, or At Series is on this recall?
Check your VIN to confirm your specific truck is included in recall 25V400. If it is, contact Altec customer service at 1-877-462-5832 and reference Altec recall number CSN-3229. Altec will install the diode free of charge.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Altec's remedy says it will install a diode to the ignition hot circuit free of charge. Parts and labor are covered for included vehicles.
What is the safety risk?
The safety risk is loss of handling and control or reduced brake performance. The PDM 10 circuit can experience a voltage spike that damages the TCCM and disrupts chassis functions, including the PTO switch, rearview mirror, or rearview camera.
When were owners notified about this recall?
Altec mailed owner notification letters on August 8, 2025. If you own one of these trucks and never received a letter, check your VIN and call Altec customer service with recall number CSN-3229.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/25V400000 |
|---|---|
| Altec customer service | 1-877-462-5832 |
| NHTSA recall # | 25V400 |
| NHTSA recall # (full) | 25V400000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (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 →