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HVAC air flow mode selection is vacuum controlled..
Problem is typically found under hood within the vacuum supply circuit.
Vacuum line / tubing routing diagram under hood will be helpful.
May need *hands-on* assistance from qualified personnel.
Good luck!
HVAC air flow mode selection is vacuum controlled.. Problem is typically found under hood within the vacuum supply circuit. Vacuum line / tubing routing diagram under hood will be helpful. May need *hands-on* assistance from qualified personnel. Good luck!