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3.0 Duramax cranks but won’t start

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WontStart Enthusiast

WontStart

Posted
Posted (edited)
1 hour ago, GJR1212 said:

I've read most of the post on this and I do not recall anyone having a long crank, no start from the auto start/stop.   The ones that do it most offend seem to get with the remote start as well as the dash button start.   If your foot is touching the gas or the floor mat is laying on the gas, you will get long crank, no start as well.  

I just tried starting mine with the diesel pedal floored. It actually started right up. Maybe I’ll use both pedals every time 😂

 

Anyone know why the auto start/stop would be unaffected by this issue? 

Edited by WontStart
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ColoradoCub
ColoradoCub

There’s nothing you did that will avert it happening again, and as of now GM has no clue how to make this problem go away. They are 0 for 3 on bulletins to fix it, and tightening fuse block bolts, hol

Another JR
Another JR

Moderators    Could you please move this thread?  This engine is not used in the HD trucks. Thanks

MyFordsNeverBreak
MyFordsNeverBreak

The confirmed fix is to trade the vehicle in..

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V8Chevy Enthusiast

V8Chevy

Posted
Posted (edited)
On 10/1/2021 at 6:28 PM, Dino76033 said:

Has anyone that does not disable the Auto Start/Stop feature ever had this happen at a stop?

 

Most of my commute to work and back is on the highway so I just leave my start stop function turned on.  I do get caught at several stop lights on my way to the highway from time to time and have not had any issues with the truck starting when I let off the brake.  My no start issues have only happened after the truck has sat for a few hours at a time.  It has always started on my 2nd try.  

 

As long as it continues to start on the 2nd try and at the low frequency that I'm currently experiencing, there's no way in hell I'll be trading it in on any other pickup offering out there currently as I'm really digging this little 3.0 straight six.

Edited by V8Chevy
GTPprix Senior Enthusiast

GTPprix

Posted
Posted (edited)

PIP5823A: Intermittent Extended Crank No Start - (Oct 1, 2021)

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Correction:

Reprogram the Engine Control Module (ECM)

:)

Edited by GTPprix
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WontStart Enthusiast

WontStart

Posted
Posted

The link didn’t work! If this is actually the fix, I almost feel bad for the guys trading these trucks in for Tundras 😂

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GTPprix Senior Enthusiast

GTPprix

Posted
Posted

Sorry that link shouldn't have carried over but I believe this is the (hopefully) fix everyone is after :)

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WontStart Enthusiast

WontStart

Posted
Posted
10 hours ago, GTPprix said:

Sorry that link shouldn't have carried over but I believe this is the (hopefully) fix everyone is after :)

I couldnt find a reference to this bulletin on the google. Where did you find it?

moobaru Enthusiast

moobaru

Posted
Posted
12 hours ago, WontStart said:

The link didn’t work! If this is actually the fix, I almost feel bad for the guys trading these trucks in for Tundras 😂

 

Feel bad for them?  They are getting a much better truck. 

WontStart Enthusiast

WontStart

Posted
Posted

Go trade in your AT4. Plenty of Tundra owners would love to have it. I personally will take the fuel mileage and torque with an intermittent no start event over one all day. 

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GTPprix Senior Enthusiast

GTPprix

Posted
Posted
2 hours ago, WontStart said:

I couldnt find a reference to this bulletin on the google. Where did you find it?

Probably because its not a bulletin and doubtful given how new it is that its been posted anywhere else either. Dealer will have that document under that PIP# :)

Hello32 Enthusiast

Hello32

Posted
Posted

My truck has been at the dealers for the past 2 weeks. They called me on the 1st and said GM is releasing a fix on Monday (today). Said it would be a ECU reprogram like last time, Im guessing this is the fix.

WontStart Enthusiast

WontStart

Posted
Posted (edited)
4 hours ago, Hello32 said:

My truck has been at the dealers for the past 2 weeks. They called me on the 1st and said GM is releasing a fix on Monday (today). Said it would be a ECU reprogram like last time, Im guessing this is the fix.

Keep us updated. I just got back from the dealer with the alleged fix but their printer wasn’t working or something. Guy said he would email the work order to me tonight but he said they replaced a relay. I’ll update when I see the paperwork. 

Edited by WontStart
Hello32 Enthusiast

Hello32

Posted
Posted

I picked up my truck. Got their once service closed so didn’t get a chance to speak to the advisor. Receipt says reprogram ecm that was released on 10/04/21 and perform setup. One thing i noticed right away was the truck cranks for longer now. It makes you feel like your going to have an extended crank but starts up.

WontStart Enthusiast

WontStart

Posted
Posted (edited)

That’s interesting. My advisor didn’t email my ticket so I can’t verify what they actually did to mine. I’ll reach out to them later this morning. 

Edited by WontStart
mjm5247 Enthusiast

mjm5247

Posted
Posted

Happened again on Sunday morning - key fob start, cold, sitting all night.  

 

I went almost two months without any issues despite still not going to the dealer (waiting for the fix or first oil change, whichever comes first).  I really hope those with the new ECM update report back with any available information.  

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