1999 Chevy Astro test

1999 CHEVROLET ASTRO
98,400 MILES • 6 CYL • AWD • AUTOMATIC
Avatar
BILL TIPTON
  • MEMBER
  • 1 POST
How do I check the heater/air conditioner switch which controls what position the air flow doors is in?
May 13, 2010 at 9:31 AM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Basically you supply vacuum to the input. From there, you switch it and the direction of the vacuum should change. What is happening to the car making you think the switch is bad?
Jun 2, 2010 at 3:43 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle