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Ask GM Tech (Cam) Your Own Question

GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 28669
Experience:  GM Grand Master Technician 2007. 14 years experience.
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How do I change the climate control lights on a 2005 impala?

Customer Question

How do I change the climate control lights on a 2005 impala?
Submitted: 5 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 5 years ago.

Welcome to Just Answer and thank you for asking your question. I look forward to helping you fix your vehicle.


I will try my best to help you and in order to do that, I need you to describe the issue in as much detail because I only know as much about your vehicle as you have told me in your post, so my answer will be based on what you have posted. Please include all the small details that may seem insignificant such as warning light, codes that you have scanned and how this started. I will also try my hardest to help you avoid a dealer or shop, but with the modern vehicles an electronics, there may come a point that we cannot avoid this, and if that is the case, I will tell this.


My goal is your satisfaction and I ask that you not accept unless you are satisfied, but if you are satisfied, please accept so I can receive credit for my work and time. Positive Feedback is greatly appreciated and bonuses are always welcomed.


Please feel free to reply as needed.


Are all the lights on or just a couple?

Customer: replied 5 years ago.
Just the ones that control where the air will flow
Expert:  GM Tech (Cam) replied 5 years ago.
This bulb is part of the circuit board for the heater control and must be changed with the heater control. You can try for a lower price on a new unit.
Customer: replied 5 years ago.
HOw do I go about changing the whole thing then?
Expert:  GM Tech (Cam) replied 5 years ago.

Below are instructions.


  1. Apply the parking brake.
    Object Number: 658401  Size: SH

  2. Using a small flat-bladed tool, remove the bezel from the ignition switch cylinder.
    Object Number: 678301  Size: SH

  3. If the vehicle is equipped with a column shift, position the transaxle shift control indicator to 1. Keep the key in the ignition switch cylinder.
  4. Adjust the steering wheel for access.
  5. Remove the steering column filler panel.Object Number: 519536  Size: SH

  6. Remove the instrument panel (I/P) fuse block access hole covers.
    Object Number: 578987  Size: SH

  7. Remove the screws from the I/P cluster trim plate.
  8. Starting at the right end of the I/P cluster, grasp the trim plate and pull rearward.
  9. Continue working around the I/P cluster trim plate until all of the retainers are released from the I/P trim pad.
  10. Disconnect the electrical connectors from the hazard switch and from the traction control switch, if equipped.
  11. Remove the I/P cluster trim plate.






Object Number: 522103  Size: SH

  • Remove the retaining screws from the HVAC control module.
  • Pull the HVAC control module out from the instrument panel.
    Object Number: 410369  Size: SH

  • Disconnect the electrical connectors from the HVAC control module.
  • Remove the HVAC control module from the instrument panel.
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