2019 Chevrolet Low Cab Forward 4500 problems, complaints & recalls
Safety recalls (2)
Electrical System:wiring 2019-09-09 · campaign 19V647000 · 16,766 vehicles
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.
Risk: A stall can increase the risk of a crash.
Fix: 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.
Electrical System: Instrument Cluster/Panel 2019-02-08 · campaign 19V064000 · 264 vehicles
Defect: Isuzu Technical Center of America, Inc. (Isuzu) is recalling certain 2019 Isuzu NPR-HD, NPR-XD, NQR, NRR, Chevrolet 4500HD, 4500XD, 5500HD, and 5500XD. The odometer accurately measures the distance traveled in miles, but erroneously indicates that they are kilometers in the LCD display instead of miles.
Risk: An incorrect odometer reading could lead to an unintended delay in critical safety related maintenance, potentially impairing the safe operation of the vehicle and increasing the risk of a crash.
Fix: Isuzu will notify customers and dealers to inspect the odometer LCD on their vehicle. If the distance traveled is listed as 'mi' (miles), the customer or dealer will be requested to inform Isuzu and the recall for that vehicle will be deemed complete. If the distance is listed as 'km' (kilometers), the customer will be requested to take the vehicle to the dealer, and the dealer will replace the meter cluster with one that indicates 'mi' (miles). The new odometer will be reprogrammed to reflec
Service bulletins (15)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-26 · PIT5698F · Service Bulletin/Repair Instructions
this pi provides diagnostics tips on how the lin bus works and how to diagnosis it.
Unknown Or Other 2026-09-04 · PIP4902W · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-07-21 · PIT5099J · Service Bulletin/Repair Instructions
pi to help diagnose a/c concern
Unknown Or Other 2026-04-01 · PIT3271Q · Service Bulletin/Repair Instructions
this preliminary information communicates information about how to determine if a wheel and tires size change is available.
Unknown Or Other 2026-03-09 · PIP6104 · Service Bulletin/Repair Instructions
this preliminary information communicates the steps on how to save a gds2 session log and upload to a technical assistance case in cx connect.
Unknown Or Other 2026-03-09 · PIP4902V · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Showing the 6 most recent of 15 bulletins. Search all of them free at nhtsa.gov.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.