SOLVED: 2010 Tahoe LTZ Pulled dash for core R&R, but can't figure out 1 remaining cable

jared999

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I pulled my dash (2010 Tahoe LTZ) and hvac box to replace my heater and evap cores, as well as 2 actuators. I'm hoping that someone has recently done a dash pull / R&R evap and heater core job as they may know where this connection goes.

I've got the hvac and dash back in and most of the wiring put back together. Except 1 connection that I just cannot find a place for. It's 2 wires (dark brown and light brown) and splits off near an actuator connector. Any ideas where this goes? I've got several pictures and some things I have thought about below. I want to get this plugged in before I put the entire dash back together.

Right now its dangling near the bottom passenger side actuator.
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Its the same shape of connector that plugs into something like this (red circle). What you are seeing below is the mode actuator on the far left of the box. I see a couple of these types of ports on the HVAC tubing, 1-2 on top, one of the left as pictured below. I can't find any others though.
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I see no where to plug this in. I'm trying to look for a port like the one above because I assume it plugs into something like that. Perhaps it connects to a loose cable (which I cannot find).

If there is no where for it to plug into on the bottom of the hvac box and not on the bottom of the dash assembly, where in the heck does it go?

I was thinking maybe I have the cables swapped. That is, the top center actuator (1) cable belongs down below and vice versa. So I would swap 1 with 2. But that would mean there is something to connect the cable to up top and I don't see anything on the heater box or the dash frame / hvac tubing. I drew a partial diagram of what I am talking about.
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close up of top actuator, behind dash installed in suv
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I've identified other connectors which this mystery connector does not plug into
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TollKeeper

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It looks like it goes to a passenger side temp sensor?
Maybe a ambient light sensor on top of the dash?
 

jared999

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It looks like it goes to a passenger side temp sensor?
Maybe a ambient light sensor on top of the dash?
Thanks for the reply. So there is a little plastic bulb that inserts into the top of the dash. Not sure if that is the light sensor you are referring to. There is a separate connection for it. As far as the passenger side temp sensor, not sure where that is, unless it is the one I've already ID'd in my photo. If so, there is a plug for it already.
 
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89Suburban

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Thanks for the reply. So there is a little plastic bulb that inserts into the top of the dash. Not sure if that is the light sensor you are referring to. There is a separate connection for it. As far as the passenger side temp sensor, not sure where that is, unless it is the one I've already ID'd in my photo. If so, there is a plug for it already.
PM me your email address and I will send over a wiring diagram PDF you can look through.
 

89Suburban

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If you want one too let me know I can send it to you too brah.
 

jared999

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Figured it out. It's a connection tucked under, the opposite side of the blower motor (red circle) this is a shot from the backside. I just kept scanning the photos I already had of the assembly and bingo.

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89Suburban

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Figured it out. It's a connection tucked under, the opposite side of the blower motor (red circle) this is a shot from the backside. I just kept scanning the photos I already had of the assembly and bingo.

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How long did it take to R & R that stuff?
 

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