my problem started with gascap light then check engine came on and gave 507 code and 456 ive replaced evap purge can. under hood, pcv and all the boots (elbows) every rubber boot was in desinergrated state just broke right off with a little pressure alos got a new gas cap from orileys cleared code light stayed off for 3 days about 40-60 miles hen came back on
my truck is a 2007 1500 v6 are there any other locations to check?