p0449, p0446, p0451 Evap codes

RichardRS · 2026-08-22T23:15:18+0000

Looking for some advice. I have these 3 evap codes p0449, p0446, p0451 and cant seem to find the source. Ive replaced the vent solenoid and the purge solenoid nether changed any codes. Truck is a 2013 GMC Sierra 1500 SLE 5.3 V8

By RichardRS
58 minutes ago in 1999-2013 Silverado 1500 & Sierra 1500

https://www.gm-trucks.com/forums/topic/276642-p0449-p0446-p0451-evap-codes/

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- p0449, p0446, p0451 Evap codes
  
  By RichardRS · Posted 58 minutes ago
  
  Looking for some advice. I have these 3 evap codes p0449, p0446, p0451 and cant seem to find the source. Ive replaced the vent solenoid and the purge solenoid nether changed any codes. Truck is a 2013 GMC Sierra 1500 SLE 5.3 V8
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