Not heat on drivers side (1 Viewer)

[MegaHusky]

We recently bought a 2004 GX470 and we're having a problem with the climate control system.
The passenger side works fine in all ranges of temperature but the drivers side only blows cold air. Infotainment climate diagnostics produces numbers 24 36 42 & 46


from digging around here I suspect it's a servo, but wound it be the one on the driver side? Or do I have to take the glovebox out? Is there another angle I should consider?

any and all help is welcome, thanks

 

[Rednexus]

There are 4 total servos and they are a known failure point on older rigs. Mine make some weird noises but still work; nevertheless I'm replacing the dash this winter and also replacing all four servo motors as preventative maintenance. Some of them require the glovebox only, others require the dash to be pulled.

Updates on the HVAC noises - any suggestions?

Has anyone checked to see if the HVAC system is throwing codes? Using Techstream, you can run a diagnostics check on the truck and one of the systems that it checks is the HVAC system. These codes won't show up on the MIL on the instrument panel, but Techstream can see them. I can't promise...

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