Jump to content

Recommended Posts

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 by ML2021
Link to comment
Share on other sites

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...

 

 

Link to comment
Share on other sites

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.

Link to comment
Share on other sites

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 by ML2021
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.