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I cannot seem to find anything online about this. What part is this called? Are there o-rings which could have went bad? Can someone point me in the right direction? Truck is a 2000 Silverado LS 4.8L
That is where the accumulator (the aluminum can) and the high side HVAC hose connects to the AC evaporator, Yes, there are O-ring seals that could leak
There are 2 ways for you to proceed. One is to purchase an assortment of HNBR O-rings (green in color but make sure HNBR is on the package) such as this:
Or two, remove the 2 o-rings and take them with you to an auto parts store and match them up to new HNBR O-rings.
Now, while you are at it. I would go ahead and replace the accumulator while you are repairing the system. Replacing the accumulator anytime the AC system is opened or the refrigerant has leaked out (resulting in the system being open to the atmosphere) because moisture contaminates the desiccant inside the accumulator. If you do replace the accumulator, it should include a new o-ring/seal.
A new accumulator will cost you between $45 - $55 at a brick and mortar parts store and they can be purchased from rockauto.com for around $20 - $30.
If you order from rockauto.com you can also order a vehicle specific o-ring and seal kit for under $10 that will contain all the seals for your truck.
A little reminder, even if you replace the accumulator ,you will need to replace the refrigerant oil that is left in the old accumulator..
There is a little more to this type work than most folks are equipped to handle. The system needs to be evacuated after being opened up and this requires a vacuum pump.
If you have the equipment , tools and knowledge to do AC work, fine ,go for it. If not , best to have a good shop do the job and do it right.
A/C leak by firewall
