Some Chevrolet G20 owners report experiencing symptoms such as poor idle, rich running, and misfires, which may indicate a fuel injector internal leak. A common sign of this issue is a strong gasoline smell inside the vehicle or around the engine compartment. Additionally, leaking fuel injectors can disrupt the air-fuel mixture, leading to engine misfires and potentially causing severe engine problems, including oil dilution and cylinder malfunction. Owners may notice a misfiring cylinder, a check engine warning light, engine vibrations, bad fuel odor while idling, and stalling at idle. It is crucial for owners to diagnose the issue promptly, repair or replace any faulty fuel injectors, and seek professional assistance if necessary to prevent further complications and improve the vehicle's performance.

On the 4L80-E Transmission (Diesel and 7.4L gas engine), Transmission fluid may leak through the electrical connector on the side of the transmission, damaging the wire harness and causing the transmission to shift erratically. Our technicians tell us there are updated shift solenoids, an internal transmission harness, and a connector pigtail available to correct this fault.