New Guy Here With A Problem P0445 And P0455?

[Sierra Driver]

2003 GMC Sierra 4.6 V8 FWD

 

110k miles

 

A couple weeks ago my check engine light came on, I noticed that occasionally I would have rough acceleration or sharp hesitation, almost like water in my tank or fuel cutting out or even a real bad miss. I travel a lot and finally took it to get it diagnosed and the above codes registered today. What is the fix, can I do it at home(I'm mechanically inclined), and would this cause the rough acceleration, etc?

 

The rough acceleration hasnt appeared in the last three days either, it seems to come and go..

[gmtech4]

these codes need some special tools to fix ,I googled p0455 ( as I do not have access to GM info anymore)and they are evap leak codes and a dealer estimate is what you need to get and paying for diagnoses is what you need to do ,

 

it could be a number of things so throwing parts at it being mechanically inclined or not is not recommended by this technician

 

keep us informed please