Table 1 shows one common power train related problems of the 2023 Chevrolet Bolt Ev.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
Recurring electronic transmission shift control failure on a 2023 Chevrolet Bolt Ev. The electronic transmission shift control pushbutton circuit board (gm part designation k212) has failed twice within approximately 9,300 miles. First failure occurred at approximately 45,695 miles in July 2025. The dashboard displayed a malfunction indicator and a "service transmission" warning. Diagnostic trouble code u18d2 was set: lost communication with transmission range selector control module on the powertrain sensor can bus. The selling Chevrolet dealer replaced the k212 pushbutton circuit board and reprogrammed the hpcm2 module. Second failure occurred at approximately 54,969 miles in March 2026, only about 9,300 miles after the first repair. Same diagnostic code family, including the identical u18d2 code, plus u0076, u18c6, and u240e. The same dealer replaced the same k212 pushbutton circuit board a second time. The repair was processed under manufacturer warranty. Safety risk: when the failure occurs, communication with the transmission range selector is lost intermittently and without warning, leaving the vehicle unable to be reliably shifted into drive, reverse, or park. This creates a clear hazard in traffic, parking lots, and on inclines. The failure mode is sudden and the warning lamps appear only after the malfunction has begun. The component is located beneath the center cup holder area. There is no visible waterproofing or moisture isolation around the circuit board, despite its location directly under a known liquid exposure zone. The failed component from the second repair was reportedly shipped back to gm by the dealer. The vehicle is available for inspection. The failure has been confirmed twice by an authorized Chevrolet dealer.
The vehicle was driving and lost all power and came to a stop. After about 5 seconds vehicle regained power. The "check engine light" illuminated on the dash. Took to dealer and stated could not replicate problem. Only have the report from vehicle computer and the ev technician did not understand the information and had to call gm for help. Got car back and problem happen again. Dealer had gm specialist out to help. Gm reset computer and problem just happens again.