P0449 on 2017 Sierra

[DenaliX]

Hi, just Got this code.
do I need to replace the whole evap solenoid ?

Anyone know the part number?

[tlaw91]

Uh those don’t go bad.

 

 

#18-NA-144 GM bulletin

 

Wiring issue between EBCM and chassis control module. There’s a popular spot on the frame rail for the circuit to rub through, but basically between the front and back of truck there’s a wiring problem. I’d just rewire the circuit I don’t bother looking for the issue, I’d be there all day and I jus don’t have time for it.

 

Take to dealer.

 

Hope this helps

-Friendly neighborhood GM tech

 

 

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