HVAC vacuum diagrams

1999 CHEVROLET S-10
141,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
Avatar
COREY HOTTINGER
  • MEMBER
  • 1 POST
i have the 4 vacuum lines hooked up to my blend doors, but a black one disconnect and don't know where to reconnect it.
Dec 24, 2019 at 8:15 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
STEVE W.
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 15,146 POSTS
The black line should go to the engine vacuum source which also attaches to the vacuum reservoir under the hood. With the engine running just listed for the hiss from the vacuum leak.
Dec 24, 2019 at 9:48 PM
Advertisement
Avatar
COREY HOTTINGER
  • MEMBER
  • 1 POST
thank you.
Dec 30, 2019 at 4:22 PM
Avatar
STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Steve W. is one of our best! Use 2CarPros anytime, we are here to help. Please tell a friend.
Dec 30, 2019 at 4:23 PM