2017–2019 Chevrolet Low Cab Forward 3500, 2017–2019 Chevrolet Low Cab Forward 4500, 2018–2019 Chevrolet Low Cab Forward 6500 and 2 other models Recall: Power supply bolt in the relay box may not have been properly tightened…
NHTSA campaign 19V647000 · Electrical System · filed Sep 9, 2019 · verified Jul 30, 2026
The defect
Isuzu Technical Center of America, Inc. (Isuzu) is recalling certain 2017-2019 N-GAS HD and Chevrolet Low Cab Forward 3500 and 4500 vehicles and 2018-2019 Isuzu FTR and Chevrolet Low Cab Forward 6500XD vehicles. The power supply bolt in the relay box may not have been properly tightened during harness production at the supplier. This may lead to melting of the power wire and/or a loss of electrical power to the vehicle, which can lead to a stall.
The risk
A stall can increase the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Isuzu will notify owners, and dealers will inspect the relay box power supply bolt, tightening it as necessary. If the harness or relay box is found to be damaged, it will be replaced or repaired, free of charge. The recall began October 24, 2019. Owners may contact Isuzu customer service at 1-866-441-9638. Isuzu's number for this recall is V1905.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
More Chevrolet Low Cab Forward 3500 recalls
Other campaigns involving Chevrolet vehicles
- 2025–2026 Chevrolet Express and 1 other model — Steering gear assembly may have a nut that was not properly…
- 2026 Chevrolet Express and 1 other model — Gear shifter may provide inaccurate gear selection feedback…
- 2018 Chevrolet Silverado 1500 and 5 other models — Left-side or right-side roof rail air bag (RRAB) inflator…
All Chevrolet Low Cab Forward 3500 recalls → · All Chevrolet recalls →
Source: NHTSA recall database, campaign 19V647000 (manufacturer number V1905). Data last verified Jul 30, 2026.