On four prior occasions for sudden catastrophic electrical system failure / stalling while the vehicle is in operation, this creates a major hazard to safe operation of the vehicle. The dealership and General Motors have been unable to isolate / replicate and effect repairs for this intermittent nonconformity, yet they have expect us to continue operating the vehicle while they knowingly have failed to effect repair. My wife and I are afraid to operate the vehicle in its condition and jeopardize our safety by operating a vehicle that is unsafe for highway operation. Given the nature of the problem, automobile appraisers state our vehicle is worthless for sale or trade. Current mileage 18187.

- Highlands Ranch, CO, USA