Noise in dash

2007 CADILLAC CTS
128,000 MILES • 2.6L • AUTOMATIC
Avatar
POQ
  • MEMBER
  • 1 POST
With car on there is a noise in the dash. when I remove keys from ignition the noise is still there. it will come and go.now my battery is draining over night. took it to AutoZone they said the battery is fine and so is the alternator. this noise is really annoying it’s like something is tightening up maybe or trying to connect. I don't know it’s weird.

Engine is a 2.8 liter.
Sep 20, 2019 at 2:30 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Welcome to 2CarPros.

If the battery light isn't on, then the alt is most likely fine. It may be an issue with an HVAC actuator going bad. Take a look at this link and let me know if it mirrors what you are experiencing. The directions are for replacement, but it explains what happens and the symptoms.

https://www.2carpros.com/articles/replace-blend-door-motor

Let me know.
Joe
Sep 20, 2019 at 2:41 PM
🔧 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