Under the dash vent

1992 NISSAN TRUCK
236,588 MILES • 2.4L • 4 CYL • 2WD • MANUAL
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ANTHONY ROBINSON2
  • MEMBER
  • 1 POST
my control that switches from defrost to floor it will not work. it acts like it is stuck. what can I do to make it open?
Feb 12, 2017 at 10:06 PM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
Sounds like the mode door controller may have failed. It is on the end of the heater box to the right of the steering column. Circled in the picture.
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Feb 13, 2017 at 12:22 AM
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