2023 GMC 2500HD Not Starting

yoman · February 3, 2023

Here is what happened, Saturday I start the truck as usual and shut off after 2 minutes used remote start, go inside use push start take 5 minutes to start finally get it started and engine light came on and got the email from onstar truck have a issue bring it to dealer service, Monday morning try to start the truck again this time no luck call tow truck tow it to dealer, Tuesday call Dealer ask what happens Dealer told me they don't know I ask them my truck start dealer say NO and give us some time, Wednesday still the same can get it start, Thursday finally got it start but Dealer don't know why cause this, Friday when to Dealer ask Machine he told me my Truck some time start and some not start have no idea why, Any one can help? Truck only have 700KM

Thank you

Another JR · February 3, 2023

I don’t have any help to offer, but others may be able to help if you tell us the engine type -diesel or gas?

newdude · February 3, 2023

1 hour ago, yoman said:

Here is what happened, Saturday I start the truck as usual and shut off after 2 minutes used remote start, go inside use push start take 5 minutes to start finally get it started and engine light came on and got the email from onstar truck have a issue bring it to dealer service, Monday morning try to start the truck again this time no luck call tow truck tow it to dealer, Tuesday call Dealer ask what happens Dealer told me they don't know I ask them my truck start dealer say NO and give us some time, Wednesday still the same can get it start, Thursday finally got it start but Dealer don't know why cause this, Friday when to Dealer ask Machine he told me my Truck some time start and some not start have no idea why, Any one can help? Truck only have 700KM

Thank you

Did you post this at Plowsite as well?

Gas or diesel engine? Did Onstar give you the trouble code? If not hit the blue button and they can give it to you and then post it here.

Edited February 3, 2023 by newdude

yoman · February 3, 2023

2023 GMC 2500HD SLE 6.6L Gas, Onstar only email me once and yes post same thing in Plowsite, I hope post here GM can see this might fix the problem

Pryme · February 6, 2023

Sorry to hear about this. Please keep us posted with what it ends up being.

could it be crank sensor?

Jettech1 · February 6, 2023

48 minutes ago, Pryme said:

Sorry to hear about this. Please keep us posted with what it ends up being.

could it be crank sensor?

Honestly that's what I was thinking of too but with so many sensors who knows without a code. I hope he gets back with us concerning the fix because I know you capture this stuff to help others!!

newdude · February 6, 2023

On 2/3/2023 at 5:12 PM, yoman said:

2023 GMC 2500HD SLE 6.6L Gas, Onstar only email me once and yes post same thing in Plowsite, I hope post here GM can see this might fix the problem

Push the blue Onstar button and ask them if they can check for codes.

yoman · February 8, 2023

Got the truck back yesterday, Dealer told me just the battery collactor loose which I think is BullsXXt and i run to back ask the mechanic he just laugh said all fix you good to go, I know WTF what can I do......

Jettech1 · February 8, 2023

13 minutes ago, yoman said:

Got the truck back yesterday, Dealer told me just the battery collactor loose which I think is BullsXXt and i run to back ask the mechanic he just laugh said all fix you good to go, I know WTF what can I do......

In all honesty, I interpret the mechanics comment as we found something really loose that shouldn't have been. It's tightened up now like it should have been in the beginning and all is good now. I'm probably wrong, but that's how I interpret the mechanics response to you. So hopefully no more problems from here on out! Please keep us updated.

Edited February 8, 2023 by Jettech1

Northern1 · February 10, 2023

I hate this as my first post, but my truck did the same thing yesterday, and I just bought it last Friday. I’ve owned many new vehicles in my life, with this being my first GM product. 2023 Silverado 2500 LT gasser, 261 miles. I really enjoyed the truck for the first miles, but I am livid. Had it towed to the dealer yesterday, no replies from them yet. I will be calling in the morning. I traded in a 2022 Tundra which I wasn’t impressed with.

Jettech1 · February 10, 2023

3 minutes ago, Northern1 said:

I hate this as my first post, but my truck did the same thing yesterday, and I just bought it last Friday. I’ve owned many new vehicles in my life, with this being my first GM product. 2023 Silverado 2500 LT gasser, 261 miles. I really enjoyed the truck for the first miles, but I am livid. Had it towed to the dealer yesterday, no replies from them yet. I will be calling in the morning. I traded in a 2022 Tundra which I wasn’t impressed with.

Hopefully it turns out to be a quick fix. Please let us know what you find out.

Pryme · February 10, 2023

5 minutes ago, Northern1 said:

I hate this as my first post, but my truck did the same thing yesterday, and I just bought it last Friday. I’ve owned many new vehicles in my life, with this being my first GM product. 2023 Silverado 2500 LT gasser, 261 miles. I really enjoyed the truck for the first miles, but I am livid. Had it towed to the dealer yesterday, no replies from them yet. I will be calling in the morning. I traded in a 2022 Tundra which I wasn’t impressed with.

Dude sorry to hear. I would be equally mad.
Yeah I came from a Tundra too but mine was a 16. Was a great truck but when I saw the new tundra I knew I wasn’t going to buy one.

keep us posted what it ends up being and welcome to the board.

Northern1 · February 10, 2023

Will do. The fact that my dealership got me a rental car today doesn’t make me feel much better. Also, my truck was parked alongside 3 others which really didn’t help.

Northern1 · February 11, 2023

I am an idiot…. I was researching this topic last night and found numerous posts about trucks not starting. Then I ran across somebody’s comment mentioning their floor mat was on the gas pedal and my heart dropped. I had just installed new floor liners but knew there was no way my OCD wouldn’t have seen that. I ran to the dealership this morning and sure enough, I am an idiot.

Jettech1 · February 11, 2023

7 minutes ago, Northern1 said:

I am an idiot…. I was researching this topic last night and found numerous posts about trucks not starting. Then I ran across somebody’s comment mentioning their floor mat was on the gas pedal and my heart dropped. I had just installed new floor liners but knew there was no way my OCD wouldn’t have seen that. I ran to the dealership this morning and sure enough, I am an idiot.

Don't beat yourself up. I promise you most of us, especially me have done stuff we don't even want to admit to. I'm glad it all worked out great. That's the bottom line!!!