Locate GMC Sierra 1500 Pickup Automatic Transmission Parts Catalog & GMC Sierra 1500 Pickup Transmission Price. Maintaining the transmission of your GMC Sierra 1500 Pickup is crucial for vehicle longevity, with regular fluid checks and timely filter replacements being key to preventing costly repairs. Be alert for signs of transmission wear, such as slipping gears or unusual noises, which may signal the need for a replacement. When selecting a new transmission, consider the durable options available, including automatic and manual variants, each offering distinct driving experiences. High-quality materials and proper installation are vital for optimal performance, ensuring your Sierra operates smoothly. Shop with us for reliable transmissions that will keep your GMC in peak condition, backed by expert support and competitive prices.