Hey all,
This is my first post on this forum, and quite frankly didn't think that I would be posting on a forum about my 2018 for another few years. I am well versed in forums and use them for other rigs, boats and motorsports of all kinds. I searched this forum to find others who have had AC issues and see if I could run down the problem without posting. No luck... if someone can lead me to a thread that will address my exact issue? Please do and I apologize.
As stated, I have a 2018 Tahoe RST and the wife drives it every day with the kids. Two days ago, she told me that the AC stopped working. First, I checked the AC control fuse, and it was intact, next I looked for the AC Relay and found out that it is somewhere in the fuse block by the hatch door. I could not find any direction as to which relay exactly it is. I think it is the one marked 8430, but I need to confirm this. The AC clutch is not engaging under a call for cool. I cannot check pressures because I do not have the R1234yf adapters for my gauges. They are on order, however. I would just go out to NAPA and get a can with a gauge on it, but those are $140 for R1234yf!! I know that GM has had some condenser issues, but I checked mine and it appears to be the new one that shouldn't leak. I believe that I am out of extended warranty as well. I will be checking into that tomorrow.
Anyone have any troubleshooting suggestions or exact location of the AC relay for me? I will listen to any comment or suggestion that anyone has at this point.
Thanks!
~Rookie
This is my first post on this forum, and quite frankly didn't think that I would be posting on a forum about my 2018 for another few years. I am well versed in forums and use them for other rigs, boats and motorsports of all kinds. I searched this forum to find others who have had AC issues and see if I could run down the problem without posting. No luck... if someone can lead me to a thread that will address my exact issue? Please do and I apologize.
As stated, I have a 2018 Tahoe RST and the wife drives it every day with the kids. Two days ago, she told me that the AC stopped working. First, I checked the AC control fuse, and it was intact, next I looked for the AC Relay and found out that it is somewhere in the fuse block by the hatch door. I could not find any direction as to which relay exactly it is. I think it is the one marked 8430, but I need to confirm this. The AC clutch is not engaging under a call for cool. I cannot check pressures because I do not have the R1234yf adapters for my gauges. They are on order, however. I would just go out to NAPA and get a can with a gauge on it, but those are $140 for R1234yf!! I know that GM has had some condenser issues, but I checked mine and it appears to be the new one that shouldn't leak. I believe that I am out of extended warranty as well. I will be checking into that tomorrow.
Anyone have any troubleshooting suggestions or exact location of the AC relay for me? I will listen to any comment or suggestion that anyone has at this point.
Thanks!
~Rookie
