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Won't start ?

B.R.67

By B.R.67
in Troubleshooting, Warranty & Recalls

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IOA New Member

IOA

Posted
Posted (edited)

Add me to this list too. I love how this truck looks and was having a hard time finding one in my area so I bought it used. It's a 2020 Custom Trail Boss and I got it with 8,000 miles. The first time the truck did not start was when I took it off-roading. Literally the worst place for this to happen. No service and no one around. After about 30 minutes the truck finally started. My initial thoughts on why it may have happened is because I was parked on a slope with little gas. I brushed this one off since the truck ended up starting anyway.

 

Fast forward a month and the same exact thing happens but this time I was in a grocery store parking lot with about 3/4 tank. At this point I knew there was something faulty with the truck. I called a local tow company and as soon as the guy arrived my truck starts up. The tow truck driver told me he has been seeing this type of issue on new trucks and did mention GM vehicles.

 

I love this truck and would like to keep it but it would be unfortunate if this were to happen during an emergency. That reason alone will make me want to get rid of it. I scheduled an appointment with my local dealership and will update once I hear what they have to say.

 

I should have gotten a Tundra. GM might be the new Ford lol.

 

 

*******Update********

3/14/2021

 

Dealership completely took care of this and haven't had an issue for several months. I forgot exactly what they said but it was something along the lines of a software update that was needed. I'm glad this worked because this is a beautiful truck and would have been sad to settle for anything else.

Edited by IOA
Update
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tystaples
tystaples

I have the same issue, started yesterday on my 2020 Denali 1500 with the 6.2. I purchased the truck new the end of April and it currently has 4900 miles on it. Crank and crank with no start. I did eve

tbarn
tbarn

A video of it not starting is of no use to the dealer or GM. It's not that they don't believe you but they cannot duplicate the concern. Watching it not start isn't any help diagnosing the issue.

econometrics
econometrics

True, but if you have a video with indisputable proof that the error is occurring, it will at least leverage them to take you more seriously and give more time to do tests needed to try and replicate

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1997SierraSLT Enthusiast

1997SierraSLT

Posted
Posted

GM will now be offering military type sleeping bags and MRE's at a discounted price when your brand new GM truck leaves you and your family stranded out in the middle of nowhere in the dead of winter.

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tystaples Enthusiast

tystaples

Posted
Posted

Mine has been fixed since June with 11k trouble free miles since then. You'll notice there are multiple failure modes described in this thread, nearly all of them described fixes that worked. 

NHM25 Enthusiast

NHM25

Posted
Posted
On 12/28/2020 at 10:41 AM, Kevin Medeiros said:

Anyone have this fixed yet? I'm thinking GM may have no idea what's actually going on with these issues.

Haven't had a single issue since tightening the UBC bolts. That did the trick. Runs like a champ now. 

Kevin Medeiros Enthusiast

Kevin Medeiros

Posted
Posted
14 minutes ago, NHM25 said:

Haven't had a single issue since tightening the UBC bolts. That did the trick. Runs like a champ now. 

What are the UBC bolts? I'm not a car guy, but I've installed batteries, changed fuses and installed hoses/belts before without any issue. What am I looking for? If it's just a matter of tightening some bolts I'd rather do that than have the service guys mess with it.

Kevin Medeiros Enthusiast

Kevin Medeiros

Posted
Posted
19 minutes ago, Chris Dubois said:

I have the 3.0 diesel and has been in the shop nearly 30 days for the crank no start issue. I was just give the replacement or repurchase option. 

Wow, that seems extreme...crazy. It's only happened a handful of times for me so far.

Steve-2019 Enthusiast

Steve-2019

Posted
Posted (edited)
8 hours ago, Kevin Medeiros said:

What are the UBC bolts? I'm not a car guy, but I've installed batteries, changed fuses and installed hoses/belts before without any issue. What am I looking for? If it's just a matter of tightening some bolts I'd rather do that than have the service guys mess with it.

Read this and decide whether you want to do this or your dealer tech.  It's very easy IMO, but be careful.

 

Bulletin (PIT5756).pdf

Edited by Steve-2019
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NHM25 Enthusiast

NHM25

Posted
Posted
44 minutes ago, Steve-2019 said:

Read this and decide whether you want to do this or your dealer tech.  It's very easy IMO, but be careful.

BUELLTIN (PIT5756).pdf 1.02 MB · 7 downloads

Yep... that's what did it for me. I meant UBEC bolts... sorry for confusion... essentially the bolts that secure the fuse box to the body of the truck under the hood. If not tightened, it may not be properly grounded. This solution has worked for me and a few other folks, but not all. Worth a shot and probably something you can easily do -- at the very least show your dealer this bulletin. 

  • 2 weeks later...
Scotch and Truck New Member

Scotch and Truck

Posted
Posted

You can add me to this list.  Tried to start the vehicle, cranked slowly would not start.  It usually starts after waiting 3 to 4 minutes.  It happens almost every time I start the truck.  The dealership in my area will not return my calls, my wife is pregnant and I can't drive her car due to a previous accident.  So what happens when my wife goes into labor and my car doesn't start?  I guess I'll have to bite the bullet on a $5k fine for driving her car with no insurance.

  • 2 months later...
BrentF New Member

BrentF

Posted
Posted
On 12/23/2019 at 12:51 PM, Icefisher said:

I am embarrassed to report my issue was operator error.

When I was washing my truck, I cleaned the Weather-Tech Floor mats.  When I reinstalled them, I accidentally covered the accelerator pedal.  By doing this, the vehicle will turn over but will not fire.

 

I didn't feel too bad, because it took the tech 5hrs to find the issue as well.  My dealer was really cool, and did not charge me a dime for the issue.

This just got my boss's truck up and running as he thought he was dead in the water.  Thank you Google and thanks to this forum!!  

 

  • 3 weeks later...
Archangle Enthusiast

Archangle

Posted
Posted

Add me to the list to 2021 GMC Sierra 1500 3.0 ,100 miles on it.Stopped at hardware pushed start button and it just turned over for a couple of minutes without starting.Kept pushing start button to get it to stop but nothing would stop it,then it stopped.Pushed button again it started up.Took it to the dealer for exhaust leak in the cabin(incomplete weld around valve,below turbo)and to check the not starting problem.Replaced valve and said the no start problem did not leave a code and gm has no info on this lol.100 miles on it and two major problems.Gm’s quality control is disappointing.700 miles on it now and it has not done it again yet ,but it looks like it could happen again anytime.Traded my 2019 Silverado 5.3 new body style.Had brake failure (Almost slammed into a back of a car at my granddaughters school) and multiple recalls.Im a gm person,I own a 2010 camaro from new,my wife has 2020 equinox and owned at least 30 others over the years and never had a problem.

Archangle Enthusiast

Archangle

Posted
Posted

Well it happened again in my driveway ,900 miles on it.Heading to dealer tomorrow.strike two!! 

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      Software Update

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      I trust you saw the other comment where he knew what he was talking about !. Yes, these darned newer vehicles with all their so smart they are stupid technology, goes and drains the battery down. As you might see my other comment, I installed a Noco 5 battery tender under the hood and at this point still have the cord routed so I have to lift the hood and then plug it in but am typically parked in a garage or a shed so its not risking the engine hood in the wind. That way I am assured or hopefully so of not finding I have a battery drawn down and can't even start the truck and that also damages the battery to draw it down too far. 
    • Chuck FB
      Software Update

      By Chuck FB · Posted

      I guess no surprise my guesses were wrong !, at least now I know if I ever happen to see it grayed out in my own truck as to what is going on.    I never happened to catch my truck with it grayed out, it seemed every time I would test to see if there was an update it never found anything and yet more than once I would check to see if there was an update and there was nothing, then a day later or even that same morning I would drive to town and after more than one engine shut down in town as I did my errands it would pop up that there is an update now ready to install and the only place I have a connection to the internet is at home by wifi so its not as if it grabbed the download while driving. I don't trust these new vehicles due to all the crap they can decide to do while sitting for some days not running and run the battery down so most of the time if I know the truck will sit for a few days I plug in the battery tender I have mounted under the hood and so the only time the truck must have downloaded software was when it was sitting in the garage where the signal is awful but I have that tender plugged in and somehow it managed to download it. I honestly detest all this crap, way to easy to leave a person stranded.    Since I don't trust any of it I don't do the install of the already downloaded software until I get home and sometimes have even sat in the truck to watch what its doing as its going through the process to its conclusion as its not like it is set up that it will tell you the next time you fire up the engine that the update that was initialed actually installed or installed properly. Yes I can go into the updates and see the list. After I go through the install where I feel its safe to do so in case it breaks down as a result, I will plug in the battery tender after the fact to recharge as I don't know how much power its taking just to do the install and that can take a while for it to install. 
    • nfisherman
      Software Update

      By nfisherman · Posted

      Thanks for the reply. All settings were correct and the engine was off, as it was supposed to be. It turned out to be something simple. I took a drive for about an hour. I must have had a low battery without knowing it. The voltage gauge on the display looked ok. At the end of my drive, I shut off the engine and the update prompt came up and it updated normally. It’s ironic because one of the features of the update is a reduction of battery drain. 

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