"ACDelco GM Original Equipment Serpentine Belts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. When you hear annoying squealing noises from the engine bay or notice sudden steering stiffness, it is often time to replace a worn drive belt before it leads to complete accessory failure. These vital components transmit rotational power directly from the crankshaft to essential underhood systems, keeping the alternator charging, the water pump cooling, and the power steering functioning smoothly. Featuring a multi-ribbed construction, these belts create secure contacts with various pulleys to provide reliable traction and minimize slippage, even during harsh winter cold starts or high-temperature highway drives. Designed to withstand constant tension without stretching, these replacement parts are rigorously validated to maintain system harmony with your tensioners and deliver durable, quiet engine operation through years of daily stop-and-go commuting. ACDelco GM Original Equipment parts are the true OE parts installed during the production or validated by General Motors for GM vehicles."

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• Reliable accessory drive performance during harsh winter cold starts
• Supports the charging system by keeping the alternator spinning
• Vital for proper engine cooling and power steering function
• Built to withstand daily commuting in stop-and-go traffic
• Smooth power transfer helps avoid unexpected belt slipping
• Maintains consistent tension for long-lasting accessory performance
• Handles the high underhood temperatures of long highway drives
• "GM engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle"
• "Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type"
• GM regularly updates production and service part designs to integrate new materials and technologies