Hey All !
I'm looking into this new Suburban that I picked up. The heat controls are the auto controls with the digital panel built into the back. (LT luxury group3)
The control panels are dead. Well, the rear one activates and says it will do stuff - but nothing happens. No vents, no fan, no temperature door actuation. So from the front or rear panel - it doesn't do anything.
I took apart the back and have continuous voltage to the fan motor. (WTF?) Like the moment the key is "ON" I have 12 volts to the motor. The motor does nothing. The motor seems to spin alright and the brushes are in good condition. The unit before the fan (The resistor box I presume) has permanent power to it, but the "input" line in the middle is dead. Nothing ever. No matter the fan setting, that has no voltage at all.
Fuses in the cabin and underhood checked and in good working order. When I pull those fuses I get no power to the center console logicon.
The connector behind the kick panel on the Driver's side is good, but there is no voltage at all going through it. I have no idea what that plug is but some guy on youtube recommended checking it for burns (Nothing I've seen so far is burned)
With the power on I get no activity whatsoever from the entire rear unit. It's just dead to the world.
Any ideas ?