ive had it 2-3 years for home use and off and on i get the fuel solenoid fault, usually dependent on ambient temps, no prob block solenoid open and the engine catches before the computer faults out the starter and go to work, now after the louisiana winter where it remained under its tarp the left panel buttons are all unresponsive, the hour meter and fuel/temp gauges work, i can hear the relay switch when i lower the bar but no push to operate, cant turn on lights or any of the left side buttons, got it to kill with the hydraulic release once since this started. inspected the harness and the plugs on the controller but didn't find any obvious faults, i am a drivablity/diesel tech at a buick/gmc dealer so i can usually find my way around a harness and electrical diag, but experience with the vehicle makes that easier. i just replaced the right panel as it was loosing buttons and the lcd was crapping out, a hour in the freezer got the old one working long enough to change my code to buttons that were still working last year, this didn't help with the left panel issue