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Troubleshooting P0446 on 2002 Avalanche

Discussion in 'Chevy Avalanche Forum (Escalade EXT)' started by jcsmaestra, Jul 19, 2012.

  1. jcsmaestra

    jcsmaestra New Member

    The Service Engine Light stays on continuously. Brought 2002 Avalanche to AutoZone to do troubleshooting, which came up as P0446.
    It showed the following:

    aaEVAP (evaporative emission system) purge/vent solenoid circuit condition
    The solenoids and system wiring are monitored for opens or shorts.
    Probable cause
    1. Purge or vent solenoids defective
    2. check connector and wiring
    3. Fuel saturated vapor canister
    4. Failed EVAP vent solenoid

    I'm not sure how to proceed with this. Is it safe to drive the truck? Can anyone help me understand this situation and how to check these possibilities?
  2. Enkeiavalanche

    Enkeiavalanche Rockstar 4 Years ROTM Winner 5000 Posts

    I had it on my 08 Avalanche for the past few weeeks.. Filled the tank hit a few bumps and it's now gone.. It's a BS Part above the tank that keeps vapor's from escaping.. NOT NEEDED...... Just something for the STEELERSHIP to charge you a arm and a leg to replace..

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