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

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iamdub

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ACDelco was good enough for X miles on your rig, but it's widely known that Timken is good stuff anywhere else in the bearing world. They may even supply to ACDelco. My first thought is to go with ACDelco as it's likely cheaper and should last just as long as the originals. But there's always a chance GM switched suppliers or even uses a different supplier for their replacement parts. I'd bet that Timken is consistently the safe go-to for this.
 

swathdiver

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Got my @BlackBearPerf tune yesterday and so far I'm pretty happy with it. Shifts are firmer and deeper into the powerband, and I don't have to beg it to downshift anymore. I can't tell a huge difference as far as the engine goes, but it definitely feels a bit more eager to get up and go. Not sure how much of that is due to TCM vs ECM, but either way it's noticeable. I also got the factory speed limiter removed and did not exceed the posted speed limit on a major interstate highway by approximately 55 miles per hour because I always follow the law. Anyways, big thanks to Justin and Jared. Very happy with everything. I'll update later with regards to fuel mileage and that sort of thing.

It'll get better as it learns. My favorite part of the tune is how the transmission performs now.
 

07Burb

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Definitely Timken or ACDelco
 

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