Some 2015-2018 Transit vehicles equipped with the Auxiliary Heater / A/C Prep Package 62C are built specifically for A/C system modification. This can be identified on the Professional Technician Society (PTS) website by using vehicle identification number (VIN) > OASIS tab > Vehicle Information > Additional information will be shown as: GZBAC - heater/A/C prep pack. The upfitter who adds their rear A/C components is responsible for filling their system and specifying the new refrigerant charge level. Do not submit warranty claims for insufficient refrigerant charge unless a defective Ford part or component is identified as the causal part. Consult the upfitter who performed the modification if refrigerant charge level is in question or a defect is present within the add-on system.
