2012 GM G4500 Complaints and Recall Information

The 2012 GM G4500 has 3 complaints and 2 recalls filed with NHTSA. Owners most frequently report total engine shutdown while driving at highway speeds between 50 and 60 miles per hour. These shutdowns occur after driving approximately two hours and can require lengthy waits before the engine restarts. No warning or engine lights illuminate during these incidents.

Common Issues

• Engine shutdown. Vehicle shuts off completely at speeds of 50-60 mph after about two hours of driving.
• Restart delay. Engine takes between 5 to 20 minutes to restart after shutting down, sometimes requiring multiple attempts.
• No warning indicators. No alarms, warning lights, or engine lights activate prior to or during the shutdown events.

Two recalls affect the 2012 GM G4500 address issues related to add-on compressor mount kits installed by Trans-Air Manufacturing Corp. These recalls involve equipment and electrical system components.

Recalls

• Air conditioner appliance. NHTSA recall 15V213000 affects 835 vehicles with Trans-Air compressor mount kits. Improper reconnection of a power distribution terminal strip can cause arcing or overheating, increasing fire risk. The fix involves inspection and correction of the connection at no charge. Recall started May 29, 2015.
• Electrical wiring. The same recall number 15V213000 covers wiring related to the power distribution terminal strip. Defect and risk mirror those in the air conditioner recall. Trans-Air will notify owners and dealers will perform necessary repairs free of charge.

Owners facing repeated engine shutdowns or unresolved recall repairs may want to review their rights under state lemon laws, especially when safety defects or persistent issues impact vehicle use.