Extended Idle Time

jeetS · June 14, 2021

1 hour ago, normalinaz said:

Same here, my dog travels to work with me too. I have a temp alarm that will text me if the cab temp gets too warm for him. I see no reason why my engine should turn itself off. My previous 6 Duramaxs didnt, and my Ford dosent, so I dont know why this one does. Arg

2019 Ford's do as well. Maybe it's new regulations?

HiggySTL · June 14, 2021

On 8/27/2020 at 10:46 AM, gearheadesw said:

But you leave a truck running expecting it to stay running. No one told the new buyers, had to find out from experience.

Agree! I found out from personal experience. They didn't tell me about this new "feature" at the dealership. my previous 2015 didn't auto shut off, so I wrongly assumed this one wouldn't either, what a surprise.

gemarsh · June 16, 2021

I know I don't belong here, but I'm thinking of getting a 3500 after harvest.

So, bare with me. My 21 1500 baby max has a line in the supplemental diesel manual that states it does not have the Extended Parking Timer. I downloaded a '20 pdf version and it does not have that line, so I'm guessing it will shut down after so long.

I know it has idled longer than 2 hours.

To me, it could be programmed out.

nards444 · June 16, 2021

On 8/25/2020 at 8:34 PM, gearheadesw said:

I smell a future law suit coming in on this. Just what the OP described, leave pet in idling vehicle and it shuts off, killing the pet. What if it's a child in the back seat, wtf?

Nahh. As litigious as this country is, not everything is a lawsuit. 1. You cant leave people or animals in a car anyways in most states and doesnt pass the common sense. 2. Most likely its in the owners manual, the dealer or the manufacture arent liable because they didnt verbally tell you, if it was written down. While I hate most of this EPA/safety crap myself and try to keep all of these safety items off my vehicles, it is what it is.

Edited June 16, 2021 by nards444

Donstar · June 16, 2021

My dog absolutely loves riding in the truck and she owns the backseat. Whenever I head to the door to go out, she is at my side wagging her tail in hopes to go for a ride. If I say, something positive with the word "truck" in my comment, she pastes herself to the front door in readiness. If I say the words, "Too hot" she walks off to one of her many beds! I also like travelling with my dog but if I'm going to a place where she is not allowed, and it is warm outside, she stays home. It is sad leaving her behind but not worth the risk of death. Leaving a vehicle running while unattended has always been risky and wasteful, imo.

June 16, 2021

Not only do I travel a lot and take my dog as much as I can with me everywhere. I also work out of my truck at times for 12 hours a day with it parked for the entire time. Not being able to decide if your $80k vehicle can idle as long as you want is really annoying.

I have figured out though if you have a high idle option on the diesel, it bypasses the timers when set. A nice double stab at the democrats for the parking timer.

newdude · June 16, 2021

Those of you interested that have push button ignition. There is a way and your dealer can do it:

Quote

#21-NA-056: Information on Vehicles Engine Shuts Off After 30 or 60 Minutes of Idling - (Mar 17, 2021)

Subject: Information on Vehicles Engine Shuts Off After 30 or 60 Minutes of Idling

Involved Region or Country

North America, Middle East, Israel, Palestine, Ecuador, Paraguay and Thailand.

Additional Options (RPOs)

Equipped with SWITCH-START, KEYLESS (RPO BTM)

Condition

Some customers may comment on if the vehicle is left parked and running with the RKE transmitter outside the vehicle, it will continue to run for up to half an hour.

If the vehicle is left parked and running with the RKE transmitter inside the vehicle, it will continue to run for up to an hour

Cause

The cause of the condition may be some GM vehicles were designed with an idle time-out.

Correction

In certain situations, the customer will request that this feature be turned off because they need to extend their idle time.

A calibration for the Body Control Module is available to eliminate the idle time out feature. Contact the Techline Customer Support Center at United States 1-888-337-1010, Canada (English) at 1-800-828-6860, or Canada (French) at 1-800-503-3222. The Techline Customer Support Center will provide programming instructions and changes to the vehicles calibration settings. You must provide the vehicle identification number (VIN) of the vehicle to be programmed. There is a fee associated with the requested vehicle calibration changes.

Refer to the proper Body Control Module: Programming and Setup procedure within SI.

Important: If this calibration is installed, the dealer will need to print the Owner’s Agreement Statement attached in this bulletin and put it with the Owner’s Manual.

Important: This is a customer pay repair.

Important: The vehicle owner is responsible to be aware of any local ordinances that restrict prolong idling.

Owner’s Agreement Statement

When the vehicle was produced, it came with the auto-shutdown feature enabled. If you are not the primary owner of your vehicle, please note that this feature may have been disabled by a previous owner. The vehicle owner is responsible for being aware of and complying with any local ordinances that may restrict prolonged idling. The vehicle owner can have this feature re-enabled at owner cost at any GM service center

Parts Information

No parts are required for this repair.

Edited June 16, 2021 by newdude

Bgoat · September 7, 2021

On 8/27/2020 at 10:46 AM, gearheadesw said:

But you leave a truck running expecting it to stay running. No one told the new buyers, had to find out from experience.

Brozat4 · September 8, 2021

Kick in your high idle Or just put it in neutral with the park brake on. It will run until your tank is empty. My truck is my office for 12-14 hour days and both trucks work great.

rmsmis · September 10, 2021

Since I travel with my dog as well, and I didn't want to leave the truck in neutral with just the dog in there (no high idle in my truck), I had my dealer program the TSB that newdude posted above. They didn't know anything about it and had to order the software upgrade for their programmers, but after $180 my truck no longer shuts off. It's already been a nice peace of mind that the truck will stay cool for the dog while grabbing lunch on a summer trip, so personally it was worth the fee.

Hans Antonsen · December 15, 2021

sheath · December 18, 2021

Do the '22 HD trucks have child locks on the rear doors? If so, I'm taking my mother-in-law for a ride to phoenix next summer... :cheers:

Maninthesea · December 18, 2021

Wanted to chime in that the idle shutoff saved me a lot of grief a few weeks ago.
I stuffed in the key fob programming procedure and remote started the truck because I misunderstood what it was asking me to do. Then the I could not shut the truck off with the start button or remote. It was like the truck was turned off and running at the same time. No buttons in the truck or on the key fob did anything other than control the door locks. I could not even open the hood and try to shut it down. I thought it mar idle thru half a tank! Then it just shut off. Now I know why. So I may be the only one glad for this feature.

j

gemarsh · December 29, 2021

Good to know my diesels don't have this feature. My 21 baby max doesn't and according to my 22 3500 diesel supplement, it also doesn't.

Haven't had it long enough to run more than 30 minutes with me un-babysitting it, to say for sure, but with the high of 28° today, it won't be shut off till I'm home.