GM Genuine Parts Diesel Glow Plug Controllers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. The glow plug system on a diesel engine is controlled by various components including the glow plug controller. These controllers are essentially the timer for the system, turning off power to the relay and glow plugs when necessary.GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

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• Helps ensure a start of combustion in a cold diesel engine
• Acts as the glow plug systems timer
• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
• GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• GM regularly updates production and service part designs to integrate new materials and technologies