2000 k3500, 7.4l
Is there a replacement A/C compressor other than the original one?????
I've had it leak two times in the same place.
The joint between the front half and the rear.
Looking for one that has a one piece body.

 

Not that I am aware of. You likely have the "HT-6" A/C compressor. I'm still running my 1998 K-1500 on one. Be glad you don't have the "R-4". They were known to have "issues", but that was back before the GMT-400 series of Chevrolet pickup trucks rolled off the line.

If you can elaborate further on your A/C system, I can likely give you a good direction(s)
I am not a true auto-tech, but was inline to becoming one after four years of high -school auto shop and two years.in junior college, before I had to become a Class A professional truck-driver.

If you don't do everything correctly on an A/C system, you will spend even more money then repairing simple air-conditioning system. For instance, you will need to change your accumulator out, along with the orifice tube and use the proper grade of PAG lubricant. If your compressor is locked/burned out you'll need to flush the entire A/C system due to the contaminants. Needless to say, but the costs of repairing an air-conditioning system can add up fast, if you have to re-do things properly.

BTW, assuming that you need a new air-conditioning compressor and other parts, it beats the hell out of replacing the evaporator, located inside the climate-control box. That repair becomes very time-consuming and expensive real fast.

 

You might want to look at Four Seasons upgraded compressor design (88950) which is supposed to eliminate leaks at the center due to case/gasket distortions. Rockauto sells it for $172.99. Even better would be to get the Four Seasons compressor and components kit which includes the correct oil, all the seals, a new accumulator and a new orifice tube for about $20.00 more. The kit comes with a lifetime warranty provided you do an AC system flush.

Now, if your compressor has grenaded, you will never get the condenser clean because of all the micro passages that modern AC condensers use. Crap from a grenaded compressor just gets stuck and blocks the passageways. Hence, you will need to get a new condenser as well.

Good Luck!

 

The one that leaked was a Four Season.
Installed in Sep of this year.
The original was leaking in the same place.
I ordered a Sanden from Amazon.

 

There should be instructions with the replacement compressor for checking the compressor to bracket mounting surfaces for being level and square.

Follow them thoroughly to prevent future problems with leaks at the body seams.

 

Unfortunately, a lot of folks just take one part off and install another , do a few things to make it work and , DONE,,, but that is not the way it is DONE !!!

In the process of "Replacing parts",,,,,,,,,,,there should be some investigating as to why the part failed ! Without that being done , there is a good possibility it will happen again.. That is where the expense and disappointment emerge. A good shop may cost more to do the same job, but will look into why certain parts failed and correct that before considering the job done correctly.
As a friend once quoted, "Good judgement comes from experience, and experience comes from bad judgement".

 

I did make sure the mount didn't have any movement.
This truck has a mount made of metal, not aluminum.
It worked for almost 4 months.
I use dye to see any leaks.
No noise from the compressor.
Amazon agreed to take it back.
Thank you Amazon.
I ordered a Sanden replacement.
Sure wish I could mount an old A6 compressor in it's place.

 

That might be nice, but even if it all hooked up you'd need to get all the PAG oil out for mineral oil, and find some R-12 refrigerant somewhere Sanden is located in Hong Kong, but that doesn't mean the Compressors are manufactured there.

Chem_Man is correct about the new condenser you'll likely need to replace. Cost $70 to $130 USD, and you'll need to change the Orifice valve there anyhow, unless it comes with one..

 

Condenser, orifice, tube, hose assy, and drier were changed.
Evap still looks good.
I have a endoscope, so I looked at the evap.
It was cleaner than I had ever seen one before.
Glad I didn't have to change it.
We got a great deal on this truck.
2000 K3500 LS, extra cab, 7.4L, Auto, 4x4, Dually.
Only 19,000mi.
We checked with the DMV and it's the true millage.
Owner got it to tow a boat, but it ate to much gas, so he parked it.
Later he put the plates in storage.
16 years later I stumbled on to it, and picked it up.
Friend has a boat, not running, and a 1994 k3500 that's just a rotten mess.
So now he is the owner.
Of course I'm the one working on it.
It's even parked at my house.
But everything got done.
A/c is the last thing.
I hope.