1994 LeSabre with automatic dual zone climate control.... no "sliders" or *****, all pushbutton, with digital display, as shown in photo below.
Blower just suddenly quit one day. Screen went blank. All buttons beep when you press them, but nothing appears on screen and nothing happens except the beep.
I bought an identical "tested" used controller off eBay and hooked it up. Exact same results. Blank screen, buttons beep, but no joy.
Both HVAC fuses under dash (10amp and 25amp) are good, and big 30 amp fuse under hood is good. The radio works fine, as I've heard they share one of the same circuits.
Is there something else I'm missing? What else could it be? Are both of these controllers bad? Should I roll the dice on another one of these turds?
Does anyone have a pinout diagram for the 8 pin connector to this panel?
Is there another fuse or a relay somewhere I should check?
Where would you begin? Thanks!
Dave
Spartanburg, SC

There is also a battery feed running to the climate control, that if it goes out, can also cause issues like that. Check ALL of the fuses. Also, you can check the ground bus bars under the carpet at the front of the front doors for corrosion. Those can cause chaos when corroded, but it tends to affect multiple systems in a different way (think gremlins)