When fixing an ac compressor on a 97 tahoe would you have to change any thing else?

You could check to see if the compressor is running.. Thats the way things break.. they just stop working.. Take the car to an A/C shop and get an estimate to fix it.. Play dumb and let them tell you what is wrong. They will tell you what is wrong.. Might try 2 or more shops and see if they all tell you the same thing.. Might be as simple as the switch.. of maybe a Compressor or a compressor clutch.. If the compressor needs to be replace.. there is the compressor, dryer, expansion valve, flushing the system and replacing the R134. NOT CHEAP..

If it is worse when reving the engine in park, your AC compressor is failing (common problem). The AC compressor, orifice tube, accumulator, belt tensioner and AC belt will need to be replaced and the AC system flushed before recharging.

ok im stupid whats vss...repost

ducting problem. not the ac.

some new or rebuilt compressors come with plastic plugs in them, you might not have pulled them out. common mistake

You need to remove the front belt first. Take the tension off the belt by putting a socket or wrench on the tensioner and pivot it away. I would make a quick sketch of the belt route if you don't have a diagram. The AC compressor tensioner is on the bottom and the belt comes off the same way. Installation is the reverse.

did you change the cabin air filter

That "thing" is part of the compressor clutch. When it’s spinning the clutch is engaged, when it stops the compressor is off. If it’s constantly cycling, you probably don’t have enough freon in the system. But remember, however the gas escaped before, it will escape again, unless you fix the leak.

The compressor is bad. I have the same problem. Apparently none of the tahoe's compressors are worth a ****! im having to replace mine too. You have to change the compressor, the accumulator/dryer, orifice tube and flush the lines. If you look on ebay you can buy a complete kit to change it all for about 300 bucks. The dealership tells me that you need to change the fan clutch as well. They told me that the reason for the noises is the fan clutch isnt working properly and it lets the compressor get too hot causeing higher pressures in the compressor due to the heat. They called it liquid slugging I believe. Mine doesnt break the belt but when you give it very much gas it makes a squeal and then a grinding noise like your trying to put a standard transmission in gear with it running without pushing in the clutch. I asked if you could just change the fan clutch and they told me no its too late, you have to change the compressor and dryer/orifice tube.

That would be the fan clutch on the compressor itself... if it wont take a charge with all setting on high and running then you'll need to get it replaced , have a specialist inspect it to make sure the innards of the compresor arent junk...I have same pronblem with my 97 z28.. but it will take a charge and last 3 months then i have to recharge...The clutch and innards of my compressor are going bad..So its a chevy known issue,,,best of luck...Ohh one more thing do you hear a hiss when you turn it off and on, the ac that is