Hi to everyone on these forums! I'm new here and I'm hoping to get some advice/help from you all concerning Trailblazer vehicle issues.
I have a 2004 LT Trailblazer with a little over 106,000 miles on it.
I've had issues with the airflow cutting completely off on the 5 mark for at least 2 years.
That problem isn't concerning to me but yesterday when I pressed the frost or a/c button or re-circulation button it does nothing.
I cannot even control if air flows only on the floor, or windshield, or anywhere anymore. Instead, the control knob flows air out of all vents.
I am still able to control how much air flows through up to 4 but that is all that works on the control panel.
So it wasn't until this weekend that I noticed practically every control besides air flow knob doesn't work anymore.
The control panel above this climate control panel works fine for radio and all that.
So far , I've fixed a low beam headlight issue, and cleaned the throttle body to fix idling issues. That's as far as I've gone for "fixing" anything on my vehicle.
I'm willing to learn and apply advice of others even though I'm very limited in knowledge about vehicles in general.
I REALLY appreciate anyone willing to help me and others on these forums!! So thank you for even reading my post
Today, I spent several hours trying to find possible solutions on Youtube and elsewhere but I couldn't seem to find anything regarding this.
The only video I found that seemed like a start is here:
If you check out the video, the HVAC control panel is the same exact one that I have in my 04 Trailblazer.
Another thing is the guy in the video talks about using the OEM schematics to trace and test each component(wiring,connectors, unit) and I would like to find where I could get these schematics to follow this approach.
Also, what tools do I need to troubleshoot any potential issues in the HVAC system? I have a basic multi-meter and wrench set. What else might I possibly need?
Thanks for reading this and I hope we can find a solution!
Regards,
Zach
I have a 2004 LT Trailblazer with a little over 106,000 miles on it.
I've had issues with the airflow cutting completely off on the 5 mark for at least 2 years.
That problem isn't concerning to me but yesterday when I pressed the frost or a/c button or re-circulation button it does nothing.
I cannot even control if air flows only on the floor, or windshield, or anywhere anymore. Instead, the control knob flows air out of all vents.
I am still able to control how much air flows through up to 4 but that is all that works on the control panel.
So it wasn't until this weekend that I noticed practically every control besides air flow knob doesn't work anymore.
The control panel above this climate control panel works fine for radio and all that.
So far , I've fixed a low beam headlight issue, and cleaned the throttle body to fix idling issues. That's as far as I've gone for "fixing" anything on my vehicle.
I'm willing to learn and apply advice of others even though I'm very limited in knowledge about vehicles in general.
I REALLY appreciate anyone willing to help me and others on these forums!! So thank you for even reading my post
Today, I spent several hours trying to find possible solutions on Youtube and elsewhere but I couldn't seem to find anything regarding this.
The only video I found that seemed like a start is here:
Another thing is the guy in the video talks about using the OEM schematics to trace and test each component(wiring,connectors, unit) and I would like to find where I could get these schematics to follow this approach.
Also, what tools do I need to troubleshoot any potential issues in the HVAC system? I have a basic multi-meter and wrench set. What else might I possibly need?
Thanks for reading this and I hope we can find a solution!
Regards,
Zach