Recall 19V647 covers 16,766 2017-2019 Chevrolet Low Cab Forward, N-Series, and Ftr vehicles for a loose relay-box bolt. Repair is free at any franchised Chevrolet dealer.
Chevrolet is recalling 16,766 2017-2019 Low Cab Forward 3500, Low Cab Forward 4500, Low Cab Forward 6500, N-Series, and Ftr vehicles because a power supply bolt in the relay box was not properly tightened during harness production. The loose connection can melt the power wire or cut electrical power, causing a stall that raises crash risk; Chevrolet dealers will complete the free repair.
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What's wrong?
The relay box on these 2017-2019 Chevrolet Low Cab Forward, N-Series, and Ftr trucks distributes electrical power through the wiring harness. A power supply bolt secures a high-current terminal inside that box. When it is tightened correctly, the terminal stays clamped, current flows cleanly, and the wiring does not overheat.
On affected trucks, that bolt was not tightened to specification during supplier harness production. The issue traces to a changed heating process for the insulator tube, which left the terminal insulation too close to the bolt and washer. A loose connection creates heat at the terminal. Over time, that heat can melt the power wire or cut electrical power to the truck, which can lead to a stall.
There is no warning sign before failure. The truck can operate normally until the electrical connection overheats or power is lost, so the first sign is the failure itself.
Who's affected?
Covers five commercial truck lines from the 2017, 2018, and 2019 model years, all involving wiring.
| 2018 Chevrolet Low Cab Forward 6500 | wiring |
|---|---|
| 2019 Chevrolet Low Cab Forward 4500 | wiring |
| 2019 Chevrolet Low Cab Forward 3500 | wiring |
| 2017 Isuzu N-Series | wiring |
| 2017 Chevrolet Low Cab Forward 4500 | wiring |
| 2018 Isuzu N-Series | wiring |
| 2018 Chevrolet Low Cab Forward 3500 | wiring |
| 2019 Isuzu N-Series | wiring |
| 2018 Chevrolet Low Cab Forward 4500 | wiring |
| 2019 Chevrolet Low Cab Forward 6500 | wiring |
| 2017 Chevrolet Low Cab Forward 3500 | wiring |
| 2018 Isuzu Ftr | wiring |
| 2019 Isuzu Ftr | wiring |
| Units affected | 16,766 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
An engine stall can cut power while you are driving and increase the risk of a crash. If the vehicle loses power, steer to a safe place, stop, and arrange service before driving farther. The dealer will inspect the relay box power supply bolt and repair damaged parts if needed. Repair is free at any franchised Chevrolet dealer.
What should I do?
- Check your VIN to confirm your 2017-2019 Chevrolet Low Cab Forward 6500, Low Cab Forward 4500, Low Cab Forward 3500, N-Series, or Ftr is included in this recall.
- Contact a franchised Chevrolet dealer to schedule the free relay-box power-supply bolt inspection.
- Ask the dealer to tighten the relay-box power-supply bolt and repair or replace any damaged harness or relay box parts that can cause wire melting, power loss, or a stall.
- Bring the recall notice if Chevrolet mailed one. If not, reference recall number 19V647 when you call.
- Drive cautiously until the inspection and repair are complete, and stop using the vehicle if it stalls or loses electrical power.
What happens at the repair
At the dealer, a Chevrolet technician inspects the relay box power supply bolt and tightens it as needed. If the harness or relay box is damaged, the technician repairs or replaces the damaged part. Parts and labor are covered under the recall. Out-of-pocket repairs already paid are handled through the existing warranty, not through a separate reimbursement program, since the affected vehicles are still under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| September 9, 2019 | NHTSA published the recall |
|---|---|
| September 9, 2019 | Dealer notification began |
| September 9, 2019 | Dealer notification ended |
| October 24, 2019 | Owner notification mailed |
| October 25, 2019 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| October 25, 2019 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 19V647?
Recall 19V647 covers 16,766 2017-2019 Chevrolet Low Cab Forward 6500, Low Cab Forward 4500, Low Cab Forward 3500, N-Series, and Ftr vehicles with a relay-box power supply bolt that was not tightened properly. The defect can melt wiring or cut electrical power, which can lead to a stall.
What should I do if my 2017-2019 Chevrolet Low Cab Forward 6500, Low Cab Forward 4500, Low Cab Forward 3500, N-Series, or Ftr is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 19V647. If it is, contact a franchised Chevrolet dealer and ask for the relay box power supply bolt inspection. Reference recall number 19V647 and Chevrolet recall number V1905 when you call.
Is the recall repair free?
Yes. Federal recall law requires the recall repair at no cost, and Chevrolet dealers will inspect and tighten the relay box power supply bolt for free. If the harness or relay box is damaged, the dealer will repair or replace the affected parts free of charge.
What is the safety risk?
The safety risk is a vehicle stall. If the relay box power supply bolt is loose, wiring can melt or the vehicle can lose electrical power. A stall in traffic can increase the risk of a crash, so schedule the free dealer inspection after your VIN is confirmed.
What if I bought this vehicle used?
The free repair still applies. Federal recall law follows the vehicle, not the first owner. Check your VIN to confirm whether your specific 2017-2019 vehicle is included, then call a franchised Chevrolet dealer with recall number 19V647 and ask for the free relay box inspection.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/19V647000 |
|---|---|
| Chevrolet customer service | 1-866-441-9638 |
| NHTSA recall # | 19V647 |
| NHTSA recall # (full) | 19V647000 |
Source documents
-
Download Misc. Document (PDF) - Download Recall Document (PDF) (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly 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 →