R134 refrigerant. Without eassist with r-134a. 5.3, 6.2L. 5.3L, without eassist 6.2L. Without eassist with r-1234yf. 5.3, 6.2L. 1234yf refrigerant. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors.
