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25-26 Block Heaters: Check your trucks!

mbarber84

mbarber84

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Ram put out a bulletin back in May, but I missed it. Happened to notice recently that a lot of people are posting pictures of their 2025+ Cummins trucks, and it’s very apparent that the block heater cord is not connected to the element in the block.

If you have a 2025+ Cummins powered HD, check your truck! Make sure the block heater cord has been fully and properly attached to the heating element that is threaded into the engine block. You’ll find it on the passenger side of the block, below the engine oil filter housing. Seems like the engine end of the cord is usually hanging between the oil filter housing and the EGR.

This is supposed to be something that dealerships address during the PDI (Pre-delivery Inspection) but, unsurprisingly, it seems to be an often overlooked item on their checklist.
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mbarber84 said:
Ram put out a bulletin back in May, but I missed it. Happened to notice recently that a lot of people are posting pictures of their 2025+ Cummins trucks, and it’s very apparent that the block heater cord is not connected to the element in the block.

If you have a 2025+ Cummins powered HD, check your truck! Make sure the block heater cord has been fully and properly attached to the heating element that is threaded into the engine block. You’ll find it on the passenger side of the block, below the engine oil filter housing. Seems like the engine end of the cord is usually hanging between the oil filter housing and the EGR.

This is supposed to be something that dealerships address during the PDI (Pre-delivery Inspection) but, unsurprisingly, it seems to be an often overlooked item on their checklist.
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My 2025 did not come with the block heater cord from the factory.
I ordered the cord from Geno's garage. I did a test--the heater element draws approx 700 watts.
 
Since it is getting colder, and many of you may be plugging the trucks in:

My 2025 did not seem to be any warmed after several overnight "heating" attempts. After investigating the cord was not plugged into the block heater. I talked to my guy at the dealership and they found all the 25 and 26 trucks in the same condition. Apparently it is now a part of PDI and the change was not communicated to them, so check your trucks!
 
mbarber84 said:
Ram put out a bulletin back in May, but I missed it. Happened to notice recently that a lot of people are posting pictures of their 2025+ Cummins trucks, and it’s very apparent that the block heater cord is not connected to the element in the block.

If you have a 2025+ Cummins powered HD, check your truck! Make sure the block heater cord has been fully and properly attached to the heating element that is threaded into the engine block. You’ll find it on the passenger side of the block, below the engine oil filter housing. Seems like the engine end of the cord is usually hanging between the oil filter housing and the EGR.

This is supposed to be something that dealerships address during the PDI (Pre-delivery Inspection) but, unsurprisingly, it seems to be an often overlooked item on their checklist.
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Really wish I had joined this group earlier. I just bought my first diesel the other day and temps in Tennessee dropped to the teens last night. I figured I would plug it in before bed. Sitting on the couch drinking coffee this morning and read this thread and ran out to check. Sure enough my truck was plugged into nothing all night.
 

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mbarber84 said:
Ram put out a bulletin back in May, but I missed it. Happened to notice recently that a lot of people are posting pictures of their 2025+ Cummins trucks, and it’s very apparent that the block heater cord is not connected to the element in the block.

If you have a 2025+ Cummins powered HD, check your truck! Make sure the block heater cord has been fully and properly attached to the heating element that is threaded into the engine block. You’ll find it on the passenger side of the block, below the engine oil filter housing. Seems like the engine end of the cord is usually hanging between the oil filter housing and the EGR.

This is supposed to be something that dealerships address during the PDI (Pre-delivery Inspection) but, unsurprisingly, it seems to be an often overlooked item on their checklist.
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“Not possible during assembly” sure sounds like “we screwed up and didn’t put a step in the assembly process for this, dealers please fix it for us”
 
Trash Panda said:
“Not possible during assembly” sure sounds like “we screwed up and didn’t put a step in the assembly process for this, dealers please fix it for us”
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I’d like to say it’s startling the number of 25-26 trucks I’m seeing with the block heaters not connected…but it’s honestly not at all surprising. Not sure wether the dealerships are just flipping a big middle finger at corporate and intentionally not doing it, or if they’re just that woefully irresponsible and not reading the bulletins.
 
mbarber84 said:
I’d like to say it’s startling the number of 25-26 trucks I’m seeing with the block heaters not connected…but it’s honestly not at all surprising. Not sure wether the dealerships are just flipping a big middle finger at corporate and intentionally not doing it, or if they’re just that woefully irresponsible and not reading the bulletins.
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My self based on what I have heard dealers say its a big F you we don't get paid to do any type of PDI work, asked one sales person what do they think a buyer thinks of when a new truck out for a teste drive fails or has a fixable kink that would have been caught if a PDI was done, all I got for an answer was a very dumb look, then a ummm its the factory's fault....
 
56ram2500 said:
My self based on what I have heard dealers say its a big F you we don't get paid to do any type of PDI work, asked one sales person what do they think a buyer thinks of when a new truck out for a teste drive fails or has a fixable kink that would have been caught if a PDI was done, all I got for an answer was a very dumb look, then a ummm its the factory's fault....
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While I respect their position and dilemma, leaving it unhooked as an “F-U” to corporate only serves to inconvenience the buyer who’s sole part in this is spending good money for an expectation of good service both before and after the sale. Dealerships should be focused on taking care of the customer and delivering the truck intact. They and corporate can “duke it out” at a later date. The customers shouldn’t be made to pay for a decision they had no part in making.
 
mbarber84 said:
While I respect their position and dilemma, leaving it unhooked as an “F-U” to corporate only serves to inconvenience the buyer who’s sole part in this is spending good money for an expectation of good service both before and after the sale. Dealerships should be focused on taking care of the customer and delivering the truck intact. They and corporate can “duke it out” at a later date. The customers shouldn’t be made to pay for a decision they had no part in making.
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Add it to the laundry list of problems that seem to be plaguing the dealership experience for many of us.
 
mbarber84 said:
Ram put out a bulletin back in May, but I missed it. Happened to notice recently that a lot of people are posting pictures of their 2025+ Cummins trucks, and it’s very apparent that the block heater cord is not connected to the element in the block.

If you have a 2025+ Cummins powered HD, check your truck! Make sure the block heater cord has been fully and properly attached to the heating element that is threaded into the engine block. You’ll find it on the passenger side of the block, below the engine oil filter housing. Seems like the engine end of the cord is usually hanging between the oil filter housing and the EGR.

This is supposed to be something that dealerships address during the PDI (Pre-delivery Inspection) but, unsurprisingly, it seems to be an often overlooked item on their checklist.
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Saw this a couple of weeks back, nice day yesterday checked mine , looked just like your picture laying beside the oil filter.
Installed it , also figured i should check the fuses everybody says are not pushed all the way in, and none of them were !
 
I'm glad I found this forum. I couldn't figure out why my block heater wasn't working on my 2026. Mine was disconnected as described above. Thank you.
 
Thanks again for posting the notice and the Stellantis Publication. My just delivered 2026 did not have it attached either. I printed the Publication and handed it to the dealer for an FYI.
 
HighHP said:
Thanks again for posting the notice and the Stellantis Publication. My just delivered 2026 did not have it attached either. I printed the Publication and handed it to the dealer for an FYI.
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Kinda crazy they weren’t aware of it.
Makes you wonder how much gets “missed” at these dealerships.
 
Picked my 26 up back in September and mine was all hooked up and ready to go. Thanks to some members on here pointing this out not being done on PDI. Plus where the cord is actually located under the front license plate holder.
 
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