Common signs include a gradual loss of cooling performance, visible oil residue on the hose (refrigerant often carries oil), or the A/C compressor failing to engage because of low pressure. Maintenance and Fixes
If the GM part 22892935 is unavailable, you can search for these equivalent "interchange" IDs: 15-34730 or 15-34463 Four Seasons: GM Alternatives: 23264898, 22764412 local mechanic to handle the refrigerant recovery and recharge for you? id 22892935 fix