HVAC Controls

[fxst]

I have a 2005 Tahoe with the dual zone climate control. the temp controls have started to act weird, they will not respond to temp adjustments in the morning until it has been driven a few miles. Numerous lights in the control panes have gone out also. How big of a job is it to replace this panel?

 

[Murder n Mayhem]

There is a controller box in very rear passenger side (part #15-75306) that is common to fail. Parts under $50 & simply installs by (remove HVAC fuse under hood first) removing black tie down knob in very rear, 1 small bolt & a clip pop in, then working up rear plastic floor kick panel about 1\2 way across then popping out lower part of pillar (upper back corner). You can then prop up the side panel (careful of pulling off cig lighter outlet wires) plenty to get access to remove the controller (2 screws & 2 plugs) then simply install new. Leaving the fuse out start the vehicle & let run for 60 seconds then shut off, replace fuse under hood & start again. Give truck few minutes to warm up & you're good to go. You can remove the whole rear panel to get full access but not required. Just did this last week, took 15 minutes in driveway & fixed.

 

[fxst]

Thanks, I will take a look at it.

 

[Murder n Mayhem]

That area under rear passenger panel is where all the climate control goodies are. We never noticed anything wrong until kids in back asked us to turn off ac when we actually had heat on. After testing it out we realized rear climate vents blew only cold, never changed & climate controls were also starting to act up. We replaced that part & system works like new. It is very common for those units to go out in these rigs.

 

[fxst]

Where exactly is it, back seat or 3rd row?

 

[Murder n Mayhem]

Very back passenger side. The large panel below the very back passenger window.