What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
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iamdub
Full Access Member
What color? Or are you gonna make us wait for a grand reveal?
the_tool_man
Full Access Member
I took my utility trailer and brought home a new patio door for my house. As I was hooking up the trailer I'm pretty sure I overheard the exact moment when the air suspension pump self-destructed. It came on normally, but started making a grinding noise after a few seconds. Now from inside, I occasionally hear, feel really, a rumble for a few seconds that I think is the pump in the throws of death. Is there any way to force the pump on without a tech-II? I want to confirm before dropping $200+ on a pump at only 120k miles.
I haven't even gotten to the broken motor mount yet. At least the pump R&R looks pretty easy.
I haven't even gotten to the broken motor mount yet. At least the pump R&R looks pretty easy.
iamdub
Full Access Member
It should run for about five seconds starting at about eight seconds after you start your Yukon. Other than that, you probably could jumper the relay under the hood. But, it has an exhaust valve circuit that may interrupt the main power, so hotwiring the main power leads going to the motor are probably the surefire way.
You can also unclip one of the air hoses at a shock and let all the air out, and then have someone get in and turn the key to run while you lay underneath by the compressor and watch as it comes on.
wjburken
Supporting Member
Sounds like your pump is toast. The pump on our 2013 gave up the ghost a little sooner than yours. Felt the same rumble.
Very easy to replace. I did it in less than 30 minutes and no jack. I would go with the Arnott pump. Also come with a new relay pack for under the hood if I recall correctly. I’ve used Dorman before with decent luck as well. I’m 4 for 4 on needing to replace them on my 4 NNBS SUV’s.
Gloss black.
I also picked up a set of Pirelli run flats this morning (295/45-20) came off from a Jeep SRT8
the_tool_man
Full Access Member
Wow, that sucks. My Expedition had air suspension. The compressor lasted at least until I sold it at 210k miles. I used Arnott replacement air shocks on it with good results. So I'll try the Arnott pump at $100 less than GM one. It couldn't be much worse. Thanks.
iamdub
Full Access Member
Took it to the track. I'm happy. 
Took it to the track. I'm happy.
Time?
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