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Tahoe & SuburbanThe power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.
I am trying to do a recharge on my AC that isn't working. I picked up the correct R-1234yf but I am assuming I am attempting to use the incorrect port. I believe the first picture may be the high pressure port and the second picture between the 2 hoses is the low pressure? I am kind of guessing and can't find a decent document on it. Thanks for any help and if you have any advice on how to get to that port on the bottom I am all ears!
If you are truly low on refrigerant after 5 years, sounds like a leak that needs to be repaired. Especially with the cost of 1234yf. NEVER add any leak sealer or refrigerant containing sealer, you could ruin the system permanently.
My 1998 Frontier didn't need any refrigerant in 20 years, until its high pressure line developed a pinhole. My 2004 Frontier didn't need any refrigerant in 14 years then its compressor seized. Both were repaired by me and still doing fine, Arizona.
Last edited by Cusser; June 11th, 2022 at 7:06 PM.
jp: Welcome to the forum. From what I understand, the last thing you want to do is to add any kind of sealer to the system. Probably adding a leak detecting dye would be the best thing.
IMO a/c work should be put in the hands of someone that knows how to do it. Seems like in reading years of a/c posts, DYI guys like me do more harm than good when attempting an a/c repair w/o proper diagnosis.
IMO a/c work should be put in the hands of someone that knows how to do it. Seems like in reading years of a/c posts, DYI guys like me do more harm than good when attempting an a/c repair w/o proper diagnosis.
Agree. I'm not an AC pro, but have my own vacuum pumps (2), gauge sets (2), UV light/goggles, electronic sniffer. Being in Arizona, AC is a necessity !!!
Cusser may not be a pro, but he knows what he's doing!!
Originally Posted by Rednucleus
IMO a/c work should be put in the hands of someone that knows how to do it. Seems like in reading years of a/c posts, DYI guys like me do more harm than good when attempting an a/c repair w/o proper diagnosis.
Agree. I'm not an AC pro, but have my own vacuum pumps (2), gauge sets (one R-12 and one R134a), UV light/goggles, electronic sniffer. Being in Arizona, AC is a necessity !!! But I know more than most, and know my limitations. With GM vehicles, I have replaced the compressors on both our 1994 Suburban and 2005 Yukon Denali in the past. Now we have a 2011 Yukon Denali Mrs. Cusser uses to tow the horses. I've also replaced compressor/condenser/drier on a 2004 Frontier, and high pressure line with pinhole on a 1998 Frontier, both run good and cool to this day.
If you are truly low on refrigerant after 5 years, sounds like a leak that needs to be repaired. Especially with the cost of 1234yf. NEVER add any leak sealer or refrigerant containing sealer, you could ruin the system permanently.
My 1998 Frontier didn't need any refrigerant in 20 years, until its high pressure line developed a pinhole. My 2004 Frontier didn't need any refrigerant in 14 years then its compressor seized. Both were repaired by me and still doing fine, Arizona.
Ya, you were correct. Ended up being the condenser leaking - TSB 17336. It was a certified used vehicle, I guess I thought that they would have replaced an item with a defect during certification, but that may just be because I didn't want to spend around $1000 on a vehicle I got last summer.17336
June 10th, 2022, 12:17 PM
2017 Suburban Low Pressure AC port location
