SPONSORED LINKS

HVAC selector controls are not working, only the floor and defrost?

Tiny
WELCH690
  • MEMBER
  • 1995 GMC SONOMA
  • 2.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 224,168 MILES
Where the vacuum line goes through the firewall.
Wednesday, April 3rd, 2024 AT 8:14 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

I believe you will find it on the driver's side of the firewall. I attached a pic of the supply under the hood that goes to the HVAC. See if it helps and let me know. Also, pic 2 is the schematic for under the dash.

Take care,

Joe

See pics below.
Images (Click to make bigger)
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, April 3rd, 2024 AT 7:00 PM
Tiny
WELCH690
  • MEMBER
  • 2 POSTS
Diagrams are unclear?
Was this
answer
helpful?
Yes
No
Friday, April 5th, 2024 AT 10:14 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Here are more which is what AllData gives us. Check out the images (below). Let us know if you need anything else.
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Friday, April 5th, 2024 AT 10:19 AM

Please login or register to post a reply.

Related Defroster Content

Vents Stay in Defrost Mode
GUIDE
Vents Stay in Defrost Mode
Your car's defroster is designed to remove moisture (fog) from the inside of the windshield in cold weather. It can be a safety problem if the defroster is not working, or...
VIEW MORE

Sponsored links