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Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.
Hello again Chris here,
At the rear blower is it missing power or ground when commanded on?
Are the heater core hoses hot where they go into the firewall?
I misunderstood that all issues were in the rear.
A possible concern for no heat up front is a blend door actuator faulty.