it started about 5 days ago. when I turn on the ac it smells like vinegar. the only thing that I can think of is there is a stinch added to the system and I have a leak, or someone spilled a beer in my truck and won't admit to it. on that note I looked in the manual and it didn't say anything about an ac filter. I have never changed one but I know they do exist. any help would be great.
09' 2500 lone star edition 4x4. 35 toyo mt's, edge juice w/attitude, xrt, aem brute force intake. Egr/cooler delete, 5" stainless