After more than 12 months since diagnosis of a bad BECM (and just under 10 months of sitting undriveable at the dealer), our 2017 Volt Premier is back home and appears to be working properly.
Nov. 2021: Found the car through the GM Certified website and purchased from a dealer. It worked great for three months.
Feb. 18, 2022: After a couple weeks of reduced propulsion warnings and other issues, we dropped it off at the only dealer (Wichita, KS) within three hours that could do warranty work.
Feb. 21, 2022: Dealer diagnosed a bad BECM. Part on backorder with no ETA. Told us to keep driving it.
Mar. 30, 2022: No word from the dealer. GM ([email protected]
) responded to say, "the part's ETA is 4/21/22."
Apr. 26, 2022: Dealer said the BECM came in (just over two months wait). Dropped the car off for the first available appointment. Dealer said it would take five hours. A day or two later, dealer said they found a couple other broken things. One clip would come in the next day. Another "cable" was special order or on backorder with no ETA. Car is undriveable and parked at dealership.
July 11, 2022: Dealer told us that on June 23 the backordered cable was going through quality control.
No further updates.
Nov. 11, 2022: Filed lawsuit: Complaint – #1 in Miller v. General Motors, LLC (E.D. Mich., 2:22-cv-12739) – CourtListener.com
Feb. 6, 2023: GM filed motion to dismiss. We have 21 days (Feb. 27) to file an amended complaint.
Feb. 21, 2023: Dealer suddenly told us our car was ready. Twelve months to the day from when the BECM was diagnosed. Paperwork says: Installed 24296900
Module (BECM), 84075358
Cable, and 24299153
Relay. This was the first I heard of the high voltage relay being replaced as well. The dealer never mentioned it before. It's also not mentioned in the limited description:
Replace the Kl6 Battery Energy Control Module: durning tear down of vehicle found that the to the safety clips were broken on the High Voltage Battery to Inverter harness plug that plugs into the high volatge ev battery.
replaced the battery energy control module per Document ID: 4179662 .. and replaced the the High Voltage Battery to Inverter harness due to the safety clips being broken.