GM Genuine Parts Diesel Glow Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These relays are electrically controlled switches that, when energized, complete the circuit to your vehicle's diesel glow plugs. 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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• Works with vehicle electronics to help your vehicle's diesel glow plugs
• 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