Starter Hangup

[ML2021]

I have a 2021 GMC Sierra with 14000 miles on it.  Over the past 3 weeks, my starter has hung up 3 times now.  Each time it engaged for approximately 20 seconds with no start.  Once the starter stopped, I tried it again with no problem.  The engine started without hesitation.  First time it was cold outside, parked on a hill, and I used my key fob.  The second time it was cool outside, truck was level and used the push button to start.  Third time it was warm outside, truck was level and used the push button.  

 

Is there a known issue with the ignition system on the new Sierra trucks?  

Edited December 3, 2021 by ML2021

[shakenfake]

Is this the 3.0L diesel? If so then yes.

[ML2021]

Yes it's the 3.0L diesel.  

Edited December 3, 2021 by ML2021

[shakenfake]

There is a massive thread somewhere on here. Just take it back to the dealer, it is a big problem

[ML2021]

I'll start digging through the threads to see if I can find it.  Thanks for the warning.  Looks like I'll be visiting the dealer when I get back from this trip.

[gemarsh]

17 hours ago, ML2021 said:

I'll start digging through the threads to see if I can find it.  Thanks for the warning.  Looks like I'll be visiting the dealer when I get back from this trip.

It buried in the 2500/3500hd forums...

 

 

[redwngr]

Just let your favorite servicing dealer know you have a 3.0 with the 'crank / no start' issue and they will apply the recently released update to correct this issue. 

 

Fwiw, there were a couple of other prior bulletins regarding hardware fixes, but they didn't correct the issue on all trucks. the software seems to have much better success.

[ML2021]

Thanks for the update and advice.  I just got home from a 2 week trip with the truck and it happened 4 times now.  I will definitely let them know.

[ML2021]

UPDATE: Took the truck to the dealer yesterday and they uploaded the new software for the ECM.  I noticed that the starter cranks a bit longer now which is a bit irritating but if it fixes the no start issue, who cares.  I'll post an update if it happens again.  Thanks again for the heads up with this issue.

Edited December 8, 2021 by ML2021