GM Genuine Parts Overdrive Cancel Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. When this switch is activated, an automatic transmission can shift into overdrive mode after accelerating to a certain speed. When the switch is disengaged, shifting of your vehicle is limited to the lower gears. 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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• Designed for plug and play installation
• 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

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