R134 capacity

Can anyone tell me the R134 capacity on my 2000 Silhouette? It has the rear air if that makes a difference.

Thanks!

hello, sorry but i dunno if you look under the hood it should tell you.take a look should be a sticker on top of radiator or on hood. if you can see the compressure look there. normally 2 3/4 lbs

Thats probably close enough.

46 ounces or 2.87 pounds for '00 Silhouette with front and rear A/C.