Recall 20V720 covers 46 2020 Isuzu Npr Hd and Low Cab Forward 4500 trucks for battery-cable heat damage. Free repair at any franchised Isuzu dealer.
Isuzu is recalling 46 2020 Npr Hd and Low Cab Forward 4500 crew cab trucks under recall 20V720 because the positive battery-to-starter cable is too long and routed near the right-side exhaust pipe. Exhaust heat can damage the conduit and insulation, exposing wires and creating a short-circuit risk that can cause a no-start condition or fire; Isuzu dealers will complete the repair free of charge.
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What's wrong?
The positive battery cable on the 2020 Isuzu Npr Hd and Low Cab Forward 4500 trucks carries electrical current from the battery to the starter. When the key or start button is used, that cable supplies the power needed to crank the 6.6L gasoline engine. It has to be routed and clipped so it stays clear of hot exhaust parts.
On affected trucks, the cable is longer than intended. That extra length lets the cable sag, depending on how it was routed through the harness P-Clip. If it sits too close to the right-side exhaust pipe, the cable is exposed to heat or contact it was not designed to handle.
There is no warning sign before failure. A driver is not expected to get a dashboard message, sound, or change in starting behavior that reliably identifies the cable routing problem.
Who's affected?
Covers 2 low-cab-forward truck lines tied to the same battery cable component.
| 2020 Isuzu Npr Hd | battery |
|---|---|
| 2020 Chevrolet Low Cab Forward 4500 | battery |
| Units affected | 46 |
| 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 truck is included.
What's the safety risk?
Heat from the exhaust pipe can break down the positive cable conduit and insulation. Exposed wires can short, leaving the truck unable to start or starting a fire. Schedule the recall repair promptly and ask the dealer to adjust the positive cable. Repair is free at any franchised Isuzu dealer.
What should I do?
- Check your VIN to confirm your 2020 Isuzu Npr Hd or Chevrolet Low Cab Forward 4500 is included in this recall.
- Contact a franchised Isuzu dealer to schedule the free positive battery cable adjustment that moves the cable away from the right-side exhaust pipe.
- Bring the recall notice if you have it, and reference recall number 20V720 when you call.
- Watch for a no-start condition or signs of overheated wiring until the repair is complete.
What happens at the repair
At the dealer, an Isuzu technician adjusts the positive cable that runs from the battery to the starter, moving it away from the right-side exhaust pipe routing called out in recall 20V720. The recall repair is free, and parts and labor are covered. Out-of-pocket repairs already paid are handled through the existing warranty, not through a separate reimbursement program, because customer vehicles are within warranty and many affected trucks were still in dealer or body-builder inventory. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| November 20, 2020 | NHTSA published the recall |
|---|---|
| November 20, 2020 | Dealer notification began |
| November 20, 2020 | Dealer notification ended |
| December 11, 2020 | Owner notification mailed |
| December 28, 2020 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| December 28, 2020 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 20V720?
Recall 20V720 covers 46 2020 Isuzu Npr Hd and Chevrolet Low Cab Forward 4500 crew cab trucks with 6.6L gasoline engines. The positive battery cable is too long and was routed near the right-side exhaust pipe, exposing it to heat. Dealers will adjust the cable for free.
What should I do if my 2020 Isuzu Npr Hd or 2020 Chevrolet Low Cab Forward 4500 is on this recall?
Check your VIN to confirm your specific truck is included in recall 20V720. If it is, contact the franchised dealer for your vehicle brand and ask for the positive battery cable recall repair. Reference recall 20V720 or Isuzu recall number V2005 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and the recall remedy says the cable adjustment is free. A franchised dealer will inspect and adjust the positive battery cable so it is routed away from the exhaust pipe.
What is the safety risk?
The safety risk is heat damage to the positive battery cable. Heat from the exhaust pipe can deteriorate the conduit and insulation, expose the wires, and create a short circuit. That can lead to a no-start condition or a fire.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V720000 |
|---|---|
| Isuzu customer service | 1-866-441-9638 |
| NHTSA recall # | 20V720 |
| NHTSA recall # (full) | 20V720000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (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 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →