My '06 1500 5.3L has been throwing the P0455 code for a while. "Tighten gas cap", but of course that's not really the issue. I've replaced the cap, the purge valve and vent valve solenoid because those are things google seems to say are probable causes and reasonably cheap to do myself. None of that has helped.
Lore seems to indicate that a 'smoke test' is the next step to find out what line somewhere is cracked and leaking. Makes sense, but it's not like I have the equipment around to do that so the next step is to take it to an actual mechanic.
It's been a long time since I've taken a vehicle to a mechanic without anything specific to fix (ie my transmission is dead). How bad is it out there now, will they take what I've done and move onto the next step in the diagnostic or are they going to insist on replacing the parts I've replaced before they'll do anything with it?
And another fun question, is this a dealer issue since it's some BS emissions thing and not an actual mechanical problem?
Lore seems to indicate that a 'smoke test' is the next step to find out what line somewhere is cracked and leaking. Makes sense, but it's not like I have the equipment around to do that so the next step is to take it to an actual mechanic.
It's been a long time since I've taken a vehicle to a mechanic without anything specific to fix (ie my transmission is dead). How bad is it out there now, will they take what I've done and move onto the next step in the diagnostic or are they going to insist on replacing the parts I've replaced before they'll do anything with it?
And another fun question, is this a dealer issue since it's some BS emissions thing and not an actual mechanical problem?