What is wrong with my a/c????

[fatnlowtahoe504]

ok so now its getting hot outside and starting to need the a/c, well no cold air is coming out, my heater is still working fine though, my a/c compressor is not coming on at all and i have checked all the fuses and plugsand they are good.....yall think the clutch went out? i am able to spin the front piece of the compressor, idno if that is supposed to be harder to turn or not...what can yall tell me?

 

[hassoun]

i've had a similar issue with my 01 Denali. turned out the AC belt was ripped and gone somewhere on a highway haha. the ac compressor was hard to turn by hand but once i put the new belt on it spun perfectly fine. i assume your belt is still on the compressor since you tried spinning it correct ? if the belt is on, turn your AC then shine your light on the compressor and watch it for few secs. if it doesnt spin whatsoever then its a bad compressor. hope that helps

 

[fatnlowtahoe504]

yea the belt is still on there, its just dead, it does nothing when i turn the a/c on

 

[redemn93]

with the car running and ac on. i dont know if they are but if the clutches on these compressor are magnetic, very very carefully take a long prybar and touch the compressor clutch. it should be magnetized.

 

[fatnlowtahoe504]

whats going to happen if i touch the clutch with the prybar???

 

[fatnlowtahoe504]

any other ideas???

 

[hassoun]

it will pull the prybar towards it since the prybar is metal

 

[177mph]

whats going to happen if i touch the clutch with the prybar???

You will explode....

 

[BlizzardX23]

iono bro...I got under my truck yesterday just foolin around with some stuff and noticed my AC belt shredded and hanging off...I need to replace it..but I hear a noise coming from that area...Im hoping my AC pump isnt bad...cuz I replaced it already back in 2007

 

[177mph]

Keep in mind that most 00-06 NBS yukons, tahoes, and suburbans have the a/c compressor running all the time. Even with the a/c and defrost off. Its no wonder the compressors are failing early.

 

[BlizzardX23]

I replaced my belt...and the AC is working fine right now....we'll see how it holds up

thanks for the info 177

 

[rich5368]

There is a TSB out for the compressors in these things. Liquid slugging is what is killing em. If you happen to get what I got which is what sounds like a jackhammer under your hood that's what it is. According to the dealer it starts out shredding a belt here and there and progressively gets worse. The TSB tells the dealers to install an inline filter to prevent liquid buildup in the compressor. Cost me a compressor evap and orifice tube. Don't know if that is your problem but that was mine. If it's not engaging at all check your Freon charge. If I'm not mistaken they won't engage without pressure in the line.

 

[Dismay]

maybe you have a leak/slow leak? on my other vehicles I know the compressor wont engage unless it senses freon in the system. just an idea.

 

[fatnlowtahoe504]

maybe you have a leak/slow leak? on my other vehicles I know the compressor wont engage unless it senses freon in the system. just an idea.

hmm if that is the case it could be it, because last time it was hot(before winter) my a/c worked fine but after winter and it started to warm up it wont work, maybe thats what it did and leaked out...