A GM service bulletin that was issued back in April of this year provides insight into a problem that certain GMC Hummer EV Pickup owners have experienced when trying to charge the vehicle at public stalls.
The service bulletin, published on April 5th, 2022, indicates some 2022 GMC Hummer EV Pickup models may experience a software issue when plugged into a public charging stall that may prevent the vehicle from initiating the charge sequence. This problem is related to a “software anomaly,” of some sort, which may be caused by oversized or damaged terminals in the charge cord connector. This allegedly happens more frequently at charging stations that are used often and with multiple vehicles, such as those at car dealerships.
From what we can tell, a fix for this issue has not yet been identified. GM’s initial service bulletin from April indicates “updated software and calibrations will be released at a later date and communicated at that time,” however we can’t find any subsequent communications indicating that a solution has been found. In the meantime, GM recommends service technicians clear any fault codes related to this problem and tell owners to try another charge station. This problem produces the diagnostic trouble codes P0D9A, P298C and P0E5F.
The 2022 GMC Hummer EV Pickup began rolling off the assembly line at the GM Factory Zero plant last fall. All GMC Hummer EV models produced thus far are limited-run Edition 1 models, with the tri-motor EV3X trim level set to enter production this fall. Production of the dual-motor EV2X and EV2 models will commence in the spring of 2023 and in early 2024, respectively. Production of the GMC Hummer EV SUV will begin in 2023, as well.