LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Heating, Ventilation, And Air Conditioning System) >> Visual Identification >> Refrigerant Label Symbols >> Air Conditioning Service Fittings

Air Conditioning Service Fittings

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Service fittings meeting SAE J639 are used on this vehicle for R-1234yf refrigerant. GM has chosen gray caps to designate systems with R-1234yf.

Refrigerant Charge Label Symbols

Symbols Description
GM2777417Courtesy of GENERAL MOTORS COMPANY
 Caution
GM2777423Courtesy of GENERAL MOTORS COMPANY
 Air Conditioning System-Mobile Air Conditioning
GM2777430Courtesy of GENERAL MOTORS COMPANY
 MAC System Lubricant Type
GM2777449Courtesy of GENERAL MOTORS COMPANY
 See Vehicle Service Manual for MAC Service Information
GM2777476Courtesy of GENERAL MOTORS COMPANY
 Requires Registered Technician to Service MAC System
GM2777547Courtesy of GENERAL MOTORS COMPANY
 Flammable Refrigerant
GM2777559Courtesy of GENERAL MOTORS COMPANY
 For Safety System Components Shall Be Replaced-Shall Not Be Repaired or Salvaged for Reuse
scientia non olet · About LEMON Manuals