Shop GMC AC Compressor Replacement Cost. Purchase GMC AC Compressor Parts. Discover Best GMC AC Compressor & GMC Air Conditioner Compressor. Maintaining the AC compressor is crucial for your GMC's climate control system; regular checks of the refrigerant level and ensuring the serpentine belt is in good condition can extend its lifespan. Be alert for signs of failure, such as strange noises or a decrease in cooling efficiency, which suggest it's time for a replacement. When selecting a new compressor, consider the scroll and reciprocating types?scroll compressors are quieter and more efficient, while reciprocating compressors are more common and easier to service. Choose one made of high-quality materials to ensure durability and ease of installation. Proper maintenance and a wise choice in replacement will keep your GMC's AC system running smoothly, enhancing your driving experience with reliable, cool comfort.