a/c defroster problem
3mikeman
12-03-2007, 08:38 PM
Question Guys,
1999 silverado 2500 6.0l. I noiticed this summer that a weird noise coming from the left front area when using the a/c almost like a pressure relief going off (like a ssshhtt sound it's had to discribe) it last for only a second but does it ever couple of minutes now that winter is here this weekend i noticed it doing the same thing when defrost is on could it be a bad a/c compressor? It only does it when a/c or the defroster is on. If you shut the heater off it stops making the noise.The a/c work great it freezes you out so i know it's not low on charge.
1999 silverado 2500 6.0l. I noiticed this summer that a weird noise coming from the left front area when using the a/c almost like a pressure relief going off (like a ssshhtt sound it's had to discribe) it last for only a second but does it ever couple of minutes now that winter is here this weekend i noticed it doing the same thing when defrost is on could it be a bad a/c compressor? It only does it when a/c or the defroster is on. If you shut the heater off it stops making the noise.The a/c work great it freezes you out so i know it's not low on charge.
rjeffery
12-04-2007, 11:09 AM
My truck does the same thing but not very often. If you are not having any problems with the AC system, I wouldn't worry about it.
gremlin96
12-09-2007, 10:23 AM
well since its a chevy, i am beting your ac is on during defrost. check your ac vent and see if its getting clogged. your ac system will cycle durning the winter.
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