I replaced the EVAP canister, the canister pressure control valve and the purge solenoid valve bolted to the intake manifold. All AC Delco from the dealer. SES came back on with same code, P441, "...incorrect purge flow." What do I have to look for?

 

The code page on the AutoTap site shows P0441 as "EVAP System No Flow During Purge". That would indicate that the solenoid is not opening, or the line from the canister is plugged. I believe if there was an electrical feed problem to the solenoid, you would get P0443 as well, so it would seem to be a plugged line.

 

If your canister was cracked on the inside and sending charcoal up through the lines, they could be clogged by charcoal still.