2020 Chevrolet Bolt electrical system problems

“My 2020 Chevrolet Bolt EV experienced a loss of propulsion that left the vehicle disabled in a parking lot. The vehicle initially displayed a motor-control system warning. It subsequently displayed "Drivetrain Power Lost" and refused to shift out of Park. After turning the vehicle off and waiting approximately five minutes, I restarted it. The READY indicator returned, and the vehicle shifted into Drive, but when I attempted to accelerate, it shuddered severely instead of moving normally. The service warning indicator remained illuminated. I stopped attempting to operate the vehicle because it was unsafe to drive. OnStar retrieved diagnostic trouble code P0A3F, associated with the drive motor position sensor circuit. Significantly, General Motors issued Technical Service Bulletin 19-NA-220 in May 2020, specifically covering loss of propulsion and DTC P0A3F in 2017–2020 Chevrolet Bolt EVs. Under the bulletin's "Cause" section, GM identifies a possible spread terminal in the X2 wiring harness connection on the transmission assembly. GM further states that the terminals may not have been properly aligned during installation at the vehicle assembly plant. The…”

“Recall 21V650 (GM N212345944) remedy not provided. The advanced diagnostic software (Software Final Remedy) was installed XXX. I bought the car used on XXX at 16,187 miles. While charging was still limited to 80% by the recall software, the software flagged the battery (DTC U362C-09) and propulsion power was reduced. Ron Tonkin Chevrolet ([XXX]) replaced the high-voltage battery pack on XXX at 21,409 miles (RO [XXX], GM TAC case XXX), which is within the 6,214-mile diagnostic period and before GM's XXX and XXX deadlines. GM's own owner letter filed with NHTSA (RMISC-21V650-9675) says such a replacement includes an extended 8-year/100,000-mile battery warranty from the replacement date. GM instead coded the repair as an ordinary warranty repair (labor op XXX), and the recall replacement-battery warranty was never added to my VIN. I am asking that GM provide the full recall remedy, including the Bolt Battery Limited Part Warranty.”

“General Motors is using the arbitrary 6,213-mile tracking window of Recall 944 to deny coverage for a diagnosed Cell Section 3 hardware failure at 123,582 miles. However, this vehicle is directly impacted by the failure parameters outlined in the expanded GM Safety Recall N242470160 / N242470162, where GM openly acknowledges to federal regulators that the advanced diagnostic software has failed to properly detect defective battery modules. By denying a physical battery replacement when a manufacturing defect is caught during a mandatory corporate software reconfiguration, GM is violating the spirit and legal intent of their ongoing federal safety recall campaigns.”

“When driving the car through a busy intersection there was a sudden, brief surge of acceleration, followed by deceleration and the vehicle cutting all motor power and becoming inoperable. The MIL lamp illuminated and the "Ready" light went out. I was unable to move the vehicle out of traffic until I got out and disconnected / reconnected the 12v battery to reset the car systems. The problem is difficult to reproduce, happening randomly, sometimes with multiple months between incidents. The incidents happen with no warning, and there are no other symptoms associated with the issue. The dealer mechanic indicated it is likely the issue indicated in Chevrolet TSB 19-NA-220, indicating the root cause is the resolver feedback connector on the electric drive unit damaged during vehicle assembly.”

“The contact owns a 2020 Chevrolet Bolt EV. The contact stated that the vehicle's charge was designed to last for 259 miles, but failed to exceed 100 miles. The vehicle was taken to the dealer and was repaired under NHTSA Campaign Number: 24V812000 (ELECTRICAL SYSTEM); however, the failure persisted. The vehicle recently failed to charge, with an error message that the vehicle was unable to charge displayed. The contact stated that the recall repair failed to correct the issue. The dealer was contacted, and a service appointment was scheduled. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 36,000.”

“VEHICLE FAILS TO CHARGE. Receiving error message that the vehicle fails to accept a charge. I've attempted charging using 3 separate chargers and all fail. This issue has been in service at numerous dealerships with no resolve. I was able to charge previously at a reduced rate but now the battery will no longer accept a charge and gives me an error message.”