What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[PG01]

Awesome. I’m officially pissed at GM. After tearing the entire dash out of my truck to replace my ac evaporator temp sensor to fix dtc b3933 I found out from a TSB that I don’t have such a sensor in my truck, the replacement HVAC head unit I installed last month needs to be programmed via TISWeb and my Tech2 or that dtc shows up and the ac won’t work. No wonder I can’t find that sensor.

Sorry mark, see post above.....

 

[Rocket Man]

Red, theres some rust on the dash supports, you should wire brush, prime and CM.... just sayin the dash is out so much at least it will look good While its out next time....

Ffffffff offfffffff mannnnnnnnnnnn lol. Better watch out, I’m starting to twitch.

 

[Tonyrodz]

Awesome. I’m officially pissed at GM. After tearing the entire dash out of my truck to replace my ac evaporator temp sensor to fix dtc b3933 I found out from a TSB that I don’t have such a sensor in my truck, the replacement HVAC head unit I installed last month needs to be programmed via TISWeb and my Tech2 or that dtc shows up and the ac won’t work. No wonder I can’t find that sensor.

At least you were able to finally figure it out.

 

[5strmtrp]

Not a pit thing. My jack Russell Porkchop does that when its really hot out. Our Heeler does it too. Zeus the collie does not. But hes old.

Also. My bad. Turned this into show your dog's. Haha

Sent from my SM-N950U using Tapatalk

 

[cfmistry]

New rims and tires mounted. Of note, OE Wheels is loaning me a TPMS tool and their expert is going to troubleshoot the new TPMS sensor issues with me... pretty cool! Hoping it works so I don't have to replace them.

 

[Kee Fuller]

This is exactly how I do it. I watch for it to start sputtering, shut it off, add more fluid, start it back up and repeat. Usually takes about a full wasted gallon before what's coming out looks identical to what's going in.


Here's the first video I Googled. This Hotel WiFi is kinda slow, so I just skimmed through it. Not totally sure of the content/relevance:

Yall use power steering fluid or atf?

 

[Kee Fuller]

New rims and tires mounted. Of note, OE Wheels is loaning me a TPMS tool and their expert is going to troubleshoot the new TPMS sensor issues with me... pretty cool! Hoping it works so I don't have to replace them.

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When i swapped my rims out, i got the same issue. One tpms senior went out, then all the others went out. Relearn tool only worked on the firsr wheel

 

[PG01]

Yall use power steering fluid or atf?

Atf is thicker and prob not good for newer cars, id stick with ps fluid. I had a few cars Years ago that had leaks and atf was cheaper and lasted longer.

 

[Doubeleive]

Awesome. I’m officially pissed at GM. After tearing the entire dash out of my truck to replace my ac evaporator temp sensor to fix dtc b3933 I found out from a TSB that I don’t have such a sensor in my truck, the replacement HVAC head unit I installed last month needs to be programmed via TISWeb and my Tech2 or that dtc shows up and the ac won’t work. No wonder I can’t find that sensor.

aaah this is how I had my crash course in how the rear hvac works in the yukon xl, after I tore it all apart and tested this and tested that and found a very much non-existent wiring diagram to discover my truck does not have said "sensor" and the rear ac wouldn't work, same issue controller needed to be programmed to my vin

in the process I spent hours on it and replaced a $125 actuator that was fine

 

[iamdub]

What socket do I need for the oil pressure sensor?

Borrow one from VatoZone