Hi so my (still under warranty) 2018 Sierra 1500's air conditioner does not work. I took it to the dealer 3 weeks ago, they replaced some seals, but said they found another leak but needed to order some parts to fix.
Fast forward this Monday, they had the parts so I brought the truck in. They ended up replacing some seals on the compressor side and refilling the refrigerant. I then picked up the truck, drove home, again found no AC.
I brought the truck back on Tuesday morning, they tried diagnosing it again, and said they found now the condenser was leaking. They ordered a new condenser and installed it today, Wednesday. So I went to pick up the truck, and tried the AC in the parking lot with the service manager there to make sure that it worked, and to his shock- it did not work still. They immediately pulled the truck back in put some more refrigerant in and sniffed around with their sniffer and could not find the source of the leak. It appears that it leaks out in the 2-4 hours between when they fill it and when I come to actually pick up the truck.
They have said that they're going to disassemble The interior tomorrow and check all the components behind the dash, but didn't have any real clues as of today. Has anyone else had any experience with hard to track down AC leaks in these later model trucks? The service manager says they changed the AC system between 2017 and 2018, so this is the style they're less used to working on. 6.2L motor if it matters. Considering that we're on our fourth try to fix the same issue under warranty, I just hope that doesn't make my vehicle a lemon.
Fast forward this Monday, they had the parts so I brought the truck in. They ended up replacing some seals on the compressor side and refilling the refrigerant. I then picked up the truck, drove home, again found no AC.
I brought the truck back on Tuesday morning, they tried diagnosing it again, and said they found now the condenser was leaking. They ordered a new condenser and installed it today, Wednesday. So I went to pick up the truck, and tried the AC in the parking lot with the service manager there to make sure that it worked, and to his shock- it did not work still. They immediately pulled the truck back in put some more refrigerant in and sniffed around with their sniffer and could not find the source of the leak. It appears that it leaks out in the 2-4 hours between when they fill it and when I come to actually pick up the truck.
They have said that they're going to disassemble The interior tomorrow and check all the components behind the dash, but didn't have any real clues as of today. Has anyone else had any experience with hard to track down AC leaks in these later model trucks? The service manager says they changed the AC system between 2017 and 2018, so this is the style they're less used to working on. 6.2L motor if it matters. Considering that we're on our fourth try to fix the same issue under warranty, I just hope that doesn't make my vehicle a lemon.
