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JohnC · 04-27-2009, 05:16 PM

Some of these trucks came with cabin air filters. They can become really clogged, because most people don't know they have them. You may check that. I believe it is under the glove box. My cousin's 02 2500 has one, but my 03 Sierra doesn't. Just something you may check out.

04-27-2009, 05:16 PM	#4
JohnC Registered User Join Date: Feb 2009 Location: Oklahoma Posts: 7,461	Re: AC Trouble Some of these trucks came with cabin air filters. They can become really clogged, because most people don't know they have them. You may check that. I believe it is under the glove box. My cousin's 02 2500 has one, but my 03 Sierra doesn't. Just something you may check out.