I have a 1995 GMC C3500 in the garage I have been tinkering with. The thing didn't come with factory AC.. Stupid.. I don't have hardly anything in the truck and its coming together nicely.. I drove it around some this summer and man was it HOT! I have no idea where the ac even mounts at. What little research Ive done I've seen pics with is on the left and right sides depending on set up. Now.. I have ok knowledge of ac systems.. I believe at one time or another Ive replaced every part one one.. I am seriously considering adding ac to this truck. It is not my daily driver and Im in no hurry to get it done.. even if I have to buy one piece every payday till spring. My question is.. can someone post up some pics of the ac system component placement? I don't even have the bracket for the ac pump. It looks to me from most of the pics Ive seen its a pancake compressor that sets on top of the passenger side of the motor.. well my vac pump is setting there. Ive seen lots of posts about eliminating the vac pump and installing a manual control which im considering also. If I remove my Vac pump can I just mount the ac compressor in its place? Im making a trip to my local pick and pull soon to start scrounging for parts.. Any advice would be appreciated! Thanks!

 

I've never seen the vacuum pump located on top of the engine before however if you do remove the pump you will want to do a turbo master setup you could buy one or make it yourself for less than $10 with stuff from a local hardware store however you will want to install a boost gauge and set the boost at 10psi max unless you want to do head gaskets, and aside from maybe the A/C mounting bracket I would think you would want to use all new parts in the system I just replaced everything in my truck for around $450 that included a dealer only condensate line it was $40 if I'm not mistaken and I switched to the 1994 model suction discharge hoses to eliminate the need for the R134 adaptor when it was all done outside temp was 98* and I had 34* coming out of the dash vents.


Give a day or two and I will get a picture of the bracket on mine and good luck finding one the high scrap metal prices of a few years ago have made these trucks hard to find in the junkyards and if they are there they are picked clean.

 

some pics would be great.. this is my first diesel truck.. really just a project truck to pay around with.. youre probably right about the new parts. I wouldnt want to install a leaking evaporator or condenser. I was planning on a new compressor anyway. Thanks for the quick reply!

 

I posted a couple pics of my vac pump on top..^^^

 

i guess I did something wrong because the first pic didnt show up so heres the vac pump setting on top of motor..

 

Well I'll be darned that is a vacuum pump on top all right that is where the pancake compressor goes .
I got busy here today and forgot to get a few pictures for you maybe I will have time and remember tomorrow to do so.

 

Ok.. thanks. I didn't mean to post all those pics. I didn't think I was doing it right and tried 3 or 4 times.. I guess I was.. Im in no hurry. Id appreciate some pics when you get the time. Ive been looking around and the ac bracket is proving to be hard to find! May have to make one..