GM Genuine Parts 15-5438 Air Conditioning Service Valve

The replacement part came out perfectly, when you pay attention to the separate parts. There was no doubt that the old one had I don't think you really need a socket since the socket size is odd. Put pliers to use to remove the old one. Even though you're throwing it away, you're getting rid of it. An adjustable wrench should be used to install the new one. I also replaced the orifice at the time because I had the seal at the orifice last time. Checking the orifice screen will show you if it's clogged and what else is going on.

Roman Donahue

| Mar 29, 2021

It has always been my professional experience to change these battery charger components, so let me describe the trick to changing it. You will need heat, such as a propane torch, to adjust the heat. A little heat will also help in removing the fitting. They used to be glued on to the high side line in the earlier GM models, but heating melts the adhesive and they are removed easily. Without heating them up, you will notice the threads wear down and will need to replace the assembly of the high side hose. You can replace the orifice tube and the accumulator for a fraction of the cost once you have opened the system. It is imperative that the system is evacuated.

Frances Glover

| Aug 07, 2020

The air conditioner had stopped blowing cold for no apparent reason in my '07 Silverado with the new body style. They told me that the valve on the high side was leaking, but they only had the low side in stock to replace it. I took it to a Valvoline instant oil change place that does AC service, and they replaced the low side with the high side. As opposed to installing it myself I brought it back to the shop for them to flush out and recharge the a/c system (recommended after replacement) and they even didn't charge me for swapping the valves, just for A blast of ice cold air is blowing now!.

Ariana Lloyd

| Mar 27, 2021

I added the content of the old accumulator to the new one. After I replaced the refrigerant oil with the ACDelco pag 150 oil, I dumped out the old oil in the new compressor and the cold air works perfectly again! I did this twice, once with my 97 Chevy Dually and once with my 99 Chevy Tahoe!.

Mary Kirk

| Apr 13, 2021

This worked great on my Silverado 2500HD and was easy to install. I blew out all the freon from the old one after it was charged. You should remove the old gasket with pliers and replace it with an adjustable wrench after removing the old one. The air conditioner now works again, as the pressure is holding well.

Giana Lambert

| Dec 02, 2020

When they are new, they seal well, but their rubber ball has memory grooves over time. Over time, they leak or Most of the time, you can unscrew them with a crescent wrench. However, there is a special socket that you can use. You should make sure you get the right one for the high or low end.

Nikolai Lara

| Aug 26, 2020

I had a leak in the A/C system in my 2002 GMC Sierra, so this is the exact part I needed to replace. It was the valve that was the issue, even after I replaced the compressor, accumulator and orifice. I was able to replace this part after I purged the system in just a few seconds. It's as easy as My first choice would have been to change it.

Eleanor Vaughan

| Apr 29, 2021

The parts I have are not what I need, and I waste my time with them. *BTW, the Mastercool (81290) Silver R134A Universal Valve Core does not fit any of those GM valves, even if I needed it. *behind the scenes, I had to buy an $13 socket, so this wouldn't be an option.

Alyssa Barrett

| Jul 24, 2020