3.0 No start TSB...anyone do it and regret it?

[seamus2154]

Hey guys, have a 2021 Sierra Denali 3.0 and have several no starts. First two months of ownership it happened 5 times. Then nothing all these months. I saw there is a TSB regarding. Truck has been pretty awesome all around for 7600 miles now. But recently I just had 2 no starts. Starts right up afterwards but it is unnerving and ridiculous. I am not a fan of going to dealership but also concerned about a software update that can screw with other stuff. Has anyone had this update and been happy or otherwise? Pretty happy with my trans shifting, and fuel mileage dont want anything that messes with it. Thanks

[redwngr]

I've read a bunch of reports here and other places.

Everyone seems happy.

 

 

 

 

[seamus2154]

Thanks, thats the feedback I was looking for. Just want to correct the issue, not find new ones thereafter. 

[rbdjr]

All good after the re-flash, cranks over 1/2 second longer when starting up now, but still instant before I installed start stop eliminator. its all good.

I do wish I new what the reflash actual did to eliminate the Crank no start condition I was having 1 time every 1000 miles, but its gone now, 3,000 miles since flash and has not happened even 1 time. 

re-flash PIP5823B oct 4 2021.pdf

Edited December 26, 2021 by rbdjr

[Jlash]

On 12/25/2021 at 7:42 PM, rbdjr said:

All good after the re-flash, cranks over 1/2 second longer when starting up now, but still instant before I installed start stop eliminator. its all good.

I do wish I new what the reflash actual did to eliminate the Crank no start condition I was having 1 time every 1000 miles, but its gone now, 3,000 miles since flash and has not happened even 1 time. 

re-flash PIP5823B oct 4 2021.pdf 105.62 kB · 24 downloads

unfortunately, this did not fix mine...

[latreille89]

I haven't had one issue since the update.