General MotorsGM Genuine Parts 22834330 Cabin Air Temperature Sensor Aspirator

This replacement fit exactly and was very easy to install.

Old one was chattering --- Ignored till I found this reasonably priced --- temp control now works, no noise -- I have not verified yet but I think the old one was also causing a current drain which seems to have stopped. Watch videos and remove trim and you can replace it in 30min or so.Edit: This was the current drain -- been over a year and have not had to keep the vehicle on charger since this was replaced. I have replaced many other things trying to stop the drain but either this was the drain or it was the last issue.

2002 escalade, worked perfect

I recently replaced the battery in my Avalanche and noticed a clattering noise coming from the thing above the drivers seat that looks like a small microphone. It’s actually the aspirator to sample the cabin temperature for the automatic climate control.Anyway, it’s a little difficult to get to this part in and out, but you can do it with enough determination. Once you have it switched out it’s as silent as a church mouse, and ready for another twenty years of service.

If your GMC or Chevy pick up heater only works when set to 90 degrees (not 89) buy this part! Spent a bunch of money at the mechanic trying to fix this problem before I consulted the google and found out about this little part in the headliner that I honestly thought was the onstar microphone. Not hard to install and fixed the problem instantly, removal was easy, the only difficult part was getting the old one disconnected from the cover part, small hands are helpful. So glad to have the heater working again.

Works well, is an OEM part, and the best part gets rid of that Hum above your head when the old one fails.Bit of a pain to get in, you will need hook tools and small hands unless you pull half your headliner down. Even then you are pulling off most of A pillar and part of B pillar to get to this thing, it's not fun but an hour or so and you are good to go.

Not worth cheaping out on this part. Bought the half-the-price version to replace the front unit in my '03 Yukon, only to have it buzz just like the old one. Bought this OEM one and good a new. It was not too much of a big deal a the front one is relatively easy to get to.Just heard the noise again, only to find out that there is also one of these located in the rear of my yukon as well. Much more involved to get to, so I will be buying the OEM unit again. 22 years is not a bad run.

I had a buzzing sound from above my head and I notice my heat would only get hot if I set the temp all the way up. This is the interior temp sensor for the HVAC system. Quick install fixed both issues. My original part was filled with dust on the sensor and the fan causing inaccurate temp readings and the buzzing noise from the fan.2007 Chevy Silverado 2500HD LTZ extended cab