2018 Chevrolet G4500 problems, complaints & recalls
Most-reported problem areas: Service Brakes (1)
Safety recalls (2)
Exterior Lighting:brake Lights 2019-04-10 · campaign 19V285000 · 5 vehicles
Defect: North Central Emergency Vehicles (North Central) is recalling certain 2016-2018 Ambulances remounted on Ford E-350 and E-450 and Chevrolet G4500 chassis equipped with Whelen brake lights. Depending on the specific wiring of the vehicle, these brake lights may illuminate when the brake pedal has not been pressed.
Risk: If the brake lights incorrectly illuminate, it can confuse other drivers, possibly increasing the risk of a crash.
Fix: North Central will notify owners and dealers will replace the brake lights, free of charge. The recall began May 20, 2019. Owners may contact North Central Emergency Vehicles customer service at 1-320-395-2529.
Exterior Lighting:brake Lights 2019-03-26 · campaign 19V236000 · 36 vehicles
Defect: Excellance, Inc. (Excellance) is recalling certain 2018 Ambulances and Emergency Vehicles built on Ford E-350, E-450, F-650, F-550 4x4, Chevrolet G4500, G4500 Diesel, C3500, G3500, Freightliner M2, International 4300, and Dodge 4500 chassis and equipped with Whelen brake lights. Depending on the specific wiring of the vehicle, these brake lights may illuminate when the brake pedal has not been pressed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety
Risk: If the brake lights incorrectly illuminate, it can confuse other drivers, possibly increasing the risk of a crash.
Fix: Excellance has notified owners, instructing them to contact Whelen to have the brake lights replaced, free of charge. The recall began on March 21, 2019. Owners may contact Whelen customer service at 1-860-718-2331 or Execellance at 1-256-772-9321.
Service bulletins (287)
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 287 bulletins. Search all of them free at nhtsa.gov.
What owners report
2024-04-30 · Service Brakes“last summer (2023) the abs light would come on when starting the vehicle and stay on until the vehicle warmed up and it would go off. by the fall it just stayed on. stored my rv for the winter and took it to service dept. this april 2024. they conducted a computer scan and the abs pump is defective. similar to the first complaint i read about a…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.