99 gmc - $4,500 (Merced)

99 gmc truck sierra, smogged until May 2026, runs well pulls my 20 foot boat with ease, title is clean and AC does not work. Tires have at least 60% tread. The check engine light came on after it passed smog and it’s showing a code P0410, which has to do with emissions but it did pass smog with this problem, and I believe it’s vacuum doesn’t sound too hard to fix.