How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask David Your Own Question
David, Chevy Technician
Category: Chevy
Satisfied Customers: 155
Experience:  14 years Chevy Tech
Type Your Chevy Question Here...
David is online now
A new question is answered every 9 seconds

2000 chevy: s-10 vents continue to blow out the dash vents..defrost

This answer was rated:

my 2000 chevy s-10 vents continue to blow out the dash vents even when I switch to other settings such as defrost and floor. What could my problem be?

These models were known for the vacuum switches on the transfer case going bad and allowing fluid to get sucked up to the control head. I would pull the control head out and ck my vacuum source line. make sure you have good vacuum and there is no red fluid in any of the lines. If all that checks good follow your lines to the mode door and see if you have vacuum there If you do you have to check the mode door itself to make sure it can move and its not broken. I hope this help you out let me know if you need any more info

David and 4 other Chevy Specialists are ready to help you
Customer: replied 7 years ago.
David, where are the vacuum switches on the transfer case located? Also, where is the mode door located? Thanks, Mike