Latest 6sp Transmission update?

[ChevyBrad1500]

I've got a 2015 Silverado 5.3 6sp, when was the last transmission update released....mine needs reflashed. Had reflashed at last oil change for transfer case recall and the transmission acts more sluggish. If someone has has a reflash lately that has helped their transmission, will you give me a reference number from your invoice so I know what Tsb or recall it was. Thanks

[andyhaug]

I don't think they have ever actually had an update for mine. 2015 made in Oct 2014. On transmission #2 and still doesn't work right. They put #2 in about the time the transfer case update came out. Was last in 3 weeks ago and still no update.

[Travis Whitmore]

Mine was just updated yesterday. Felt like it shifted better at first but today I noticed some times the rpms spike up when it shits. Not sure if this is what people refer to as "flare" but it didn't do it before the update.

 

 

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[redwngr]

Reflash probably requires the trans to also redo it's 'learn' process.