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P0440 Diagnostic Trouble Code Discussion for November 2010

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
2001 Chevrolet Blazer Trailblazer 4.3L MIL Lamp on VIN: 1GNCS13W01
P0440: EVAP System No Flow During Purge. we have this blazer that keeps setting code po440 for evap. large leak.i have smoked tested system several times and can not find a leak.i did find a hose at the canister that was not hooked up. alldata says ii goes to rollover valve on top of fuel tank but i ...
November 09, 2010