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  1. 2017 Volt Premier Transmission Buzz Vibration

    Problems, Driver Warnings or DTCs - Gen2 Volt
    Does anyone else notice a buzzy vibration when the ICE is used while accelerating slowly? I can hear it and also feel it, most noticeable through the steering wheel. It is especially noticeable between 35 and 50 MPH. When acceleration stops and I hold speed constant the buzz will continue for...
  2. Two different sound types in fan only mode

    Generation 1 Volt (2011-2015)
    The Volt is so quiet that you pay more attention to subtle noises you do not even notice on ICE'd cars. On My 2013, in fan only mode (no heat, no AC, no defog, etc), I can easily identified two types of noise. The first one is obviously related to the air flow. It is barely audible in 1 and...
  3. Buzzing Coulomb Technology CT-500 L2 EVSE replaced by SPX under warranty

    Generation 1 Volt (2011-2015)
    From day one my CT-500 made a slight hum when under load. About six weeks ago it began to intermittently hum/buzz more loudly during charging. The buzz sounds very much like a loose transformer lamination. I contacted SPX who, in turn, contacted Coulomb. Coulomb policy is to replace...