Jump to content

2020 3.0 Diesel Engine fan Racing (Diesel particulate filter?)

Truckasaurus
 Share

Recommended Posts

gemarsh Senior Enthusiast

gemarsh

Posted
Posted
3 minutes ago, Brandonb0013 said:

I appreciate your input.  So you are experiencing what the dealer is, that if it's not being remote started, you have no issues.  To clarify, do you plug it in above 0 degrees F?

Yes, Brandon, if the forecast is to be below 40°F, I plug it in, if it's not running. I get home and will plug it into a timer, that will energize the heater at 3am. I will leave the house around 8am. I will drive to the shop and if I plan on being there for an hour or less, it stays running. If longer, I park by a outlet and plug it in with no timer.

 

You are communicating with a person that has froze his fingers off, changing fuel filters on the side of roads. It costs just pennies a day to keep a vehicle plugged in for me. 

 

I can understand you wanting to plug in a diesel in the winter months. I'm sorry you are having issues. It's unreal that GM has an issue with something so simple as a block heater. For years we have used Kat heaters, without issue. GM has screwed with thermostats inline. And now seems to be doing something new.

  • Replies 65
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Brandonb0013
Brandonb0013

Dropped it off at the dealership this evening.  They said there was no service bulletin for this issue and they were not aware of it.  I printed off this article and left it with them since it explain

Brandonb0013
Brandonb0013

Received the truck with a new water pump installed. I'll test out the cold start with block heater in the morning.  Keep you updated as well.

Brandonb0013
Brandonb0013

I agree, I hope this is all that is needed until they can fix the remote start part.  I hope to hear your experiences if you give the block heater a shot! 

gemarsh Senior Enthusiast

gemarsh

Posted
Posted
17 minutes ago, Brandonb0013 said:

Not sure I follow this.  If you unplug the heater and then start the vehicle, the element should still be heated, thus I wouldn't expect it to be that big of difference.  I'm not familiar with how hot the element gets, but the engine is never at 160 when I start it after using the block heater, so I have this hunch that it doesn't get crazy hot in the first place...?  Maybe?  But, I'm pretty sure that it's not getting above the boiling point of the coolant, which is then when I would expect the "water on a light bulb" scenario to happen.  

Idk, I'm just speculating and thinking aloud.  Again, thank you for your input!

In the old days, you could hear the heater sizzle after a minute after plugging in and stay sizzling. After unplugging it would quit within 2 3 seconds, cooling off fast. When it's this cold, like we are having now, a block heater would be lucky to keep the whole engine warm, it will be hot around the heater itself, the radiator will be ambient air temp, if the heater is still sizzling and the engine pumps cold coolant past the element, it could make it rupture. 

 

I honestly don't know how warm this gm element gets. I see the cord end has 8a on it. I am assuming the end is rated for 8 amps. So I would figure the element is 960 watts or less.. Hair dryers are 1500 watts. But I don't think a person would want to touch it, plugged in, out of the block.

 

The good ole Kat block heaters in the day were 2200 watts and had to be plugged into 20 amp circuits or they would trip breakers. Those are what I have in my head as would pop like water hitting a light bulb.

Mercracing Enthusiast

Mercracing

Posted
Posted
In the old days, you could hear the heater sizzle after a minute after plugging in and stay sizzling. After unplugging it would quit within 2 3 seconds, cooling off fast. When it's this cold, like we are having now, a block heater would be lucky to keep the whole engine warm, it will be hot around the heater itself, the radiator will be ambient air temp, if the heater is still sizzling and the engine pumps cold coolant past the element, it could make it rupture. 
 
I honestly don't know how warm this gm element gets. I see the cord end has 8a on it. I am assuming the end is rated for 8 amps. So I would figure the element is 960 watts or less.. Hair dryers are 1500 watts. But I don't think a person would want to touch it, plugged in, out of the block.
 
The good ole Kat block heaters in the day were 2200 watts and had to be plugged into 20 amp circuits or they would trip breakers. Those are what I have in my head as would pop like water hitting a light bulb.

I, like you, have been in the diesel field for a long time. About 13 years for me. I don’t disagree with what you’re saying, but GM has gone so far as to have the auto stop/start on these diesels. That flys in the face of what we’re used to. I don’t think we can compare the “old days” diesels to today’s current half ton diesels.


Sent from my iPhone using Tapatalk
Mercracing Enthusiast

Mercracing

Posted
Posted

Sorry it took me so long to post. Last weekend I parked my truck outside from Friday night until Sunday morning. High temps were below zero. I plugged my truck in Sunday morning for about 3 hours. I started my truck using the button, and it was MAYBE +3 degrees. No issues.


Sent from my iPhone using Tapatalk

Brandonb0013 Enthusiast

Brandonb0013

Posted
Posted

So this is my experience over the last few days.  Unfortunately/fortunately we are through the sub-zero temps here for a while in Wisconsin.  Attached is a spreadsheet of my data collection.  My dealer called on Monday asking me what I had experienced, so I sent them this file without the last few days of information.  I have yet to hear back from them.  

Truck Troubleshooting Data.xlsx

redwngr Senior Enthusiast

redwngr

Posted
Posted
19 hours ago, Colossus said:

Good idea to run the Diesels daily in freezing temps. 

Nonsense.

  • Like 1
Chrisd534 Enthusiast

Chrisd534

Posted
Posted

I had this fan issue twice. Stopped after a day both times. I've also never plugged my truck into the block heater as it hasn't gone down to the recommended temps here yet. I brought to the dealer twice and because it wasn't happening they said they couldn't do anything. 

GMC Ryan Enthusiast

GMC Ryan

Posted
Posted

Update from me.... truck hasn't moved in 24 hours. it was 36F this afternoon and I knew I had to go out this evening, so I plugged the truck in to see what would happen. Truck plugged in three hours, coolant temp is 73F on startup. No engine fans!! Truck built January 2020, latest ECM calibration installed late May 2020 when I purchased. No idea if GM has actually made a fix for the engine fans in the software or if it's just coincidence, but I'm happy. ?

Brandonb0013 Enthusiast

Brandonb0013

Posted
Posted
I had this fan issue twice. Stopped after a day both times. I've also never plugged my truck into the block heater as it hasn't gone down to the recommended temps here yet. I brought to the dealer twice and because it wasn't happening they said they couldn't do anything. 
This is the first time I've heard of it happening without using the block heater. Keep us updated if it continues.

Sent from my Pixel 4 XL using Tapatalk

Brandonb0013 Enthusiast

Brandonb0013

Posted
Posted
Update from me.... truck hasn't moved in 24 hours. it was 36F this afternoon and I knew I had to go out this evening, so I plugged the truck in to see what would happen. Truck plugged in three hours, coolant temp is 73F on startup. No engine fans!! Truck built January 2020, latest ECM calibration installed late May 2020 when I purchased. No idea if GM has actually made a fix for the engine fans in the software or if it's just coincidence, but I'm happy. [emoji846]
This is interesting. What was the outside temperature when you started the truck? I'm guessing it was below freezing?

Also, your icon next to your name is the green G. Are you also located in wi or just a fan? I'm actually in the greater GB area.

Sent from my Pixel 4 XL using Tapatalk

Brandonb0013 Enthusiast

Brandonb0013

Posted
Posted
Update from me.... truck hasn't moved in 24 hours. it was 36F this afternoon and I knew I had to go out this evening, so I plugged the truck in to see what would happen. Truck plugged in three hours, coolant temp is 73F on startup. No engine fans!! Truck built January 2020, latest ECM calibration installed late May 2020 when I purchased. No idea if GM has actually made a fix for the engine fans in the software or if it's just coincidence, but I'm happy. [emoji846]
This is interesting. What was the outside temperature when you started the truck? I'm guessing it was below freezing?

Also, your icon next to your name is the green G. Are you also located in wi or just a fan? I'm actually in the greater GB area.

Sent from my Pixel 4 XL using Tapatalk

Mercracing Enthusiast

Mercracing

Posted
Posted
This is interesting. What was the outside temperature when you started the truck? I'm guessing it was below freezing?

Also, your icon next to your name is the green G. Are you also located in wi or just a fan? I'm actually in the greater GB area.

Sent from my Pixel 4 XL using Tapatalk


Im not who you were asking, but I’m just south in Appleton


Sent from my iPhone using Tapatalk
GMC Ryan Enthusiast

GMC Ryan

Posted
Posted
2 hours ago, Brandonb0013 said:

This is interesting. What was the outside temperature when you started the truck? I'm guessing it was below freezing?

Also, your icon next to your name is the green G. Are you also located in wi or just a fan? I'm actually in the greater GB area.

Sent from my Pixel 4 XL using Tapatalk
 

It was 32 or 33 when I started.

 

I'm located in British Columbia, but have family in Wisconsin. I was last in GB and visited Lambeau in the 2019 off-season.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • BCGM
      Recalls 2024 Chevrolet HD

      By BCGM · Posted

      JW2024 and Others is this site for Oshawa built Trucks as well ? Thank You !
    • BCGM
      Remote Start Noise 2024 2500 HD Gas

      By BCGM · Posted

      Thanks JR that would be great if you could do that !!! Do you have a link to where this was discussed before ? I cant seem to find it  Thank You Again !
    • Another JR
      Remote Start Noise 2024 2500 HD Gas

      By Another JR · Posted

      Oil pump noise was discussed before.  I will try to remember to record a remote start later this morning. 
    • Chuck FB
      MPG at 600 miles

      By Chuck FB · Posted

      There are probably a few threads talking about fuel mileage but this one seemed to fit the stats I have seen based on my typical local driven route but with different outcomes based on different seasons/temperatures. I have a few hundred pounds of items that consistently ride on the truck at all times such as a bak flip cover, rubber bed mat, tools and extra fuel so I would be something over 8100 lb without me in the truck. All these examples are based on a 100 mile round trip to a town plus running around town so maybe 110 to 120 miles in total for a trip. Using regular fuel and I assume it always has some ethanol in it but don't know the percentage they blend in. Also speed wise I am going at 62 mph and non aggressive driving although less speed yet if its crappy winter condition roads. I am going by an initial reset of the computer generated fuel use numbers averaged over a couple of thousand miles or so for each weather/season so they may be more optimistic then actual hand calculated numbers. Basically this is painting a picture of doing the same drive but seasonal conditions and temperature being the major variable to the end result. Oh and although I am in Alberta Canada, I am converting it to miles per US gallon so there is no confusion.    So winter time it gets cold here, no real surprise there and the roads can be clear at times but also often have packed rough snow or are are driving through loose snow ( they do a poor job of plowing the highways ) and yes this includes the extra idle engine time due to trying not to freeze ones butt off. 12.7 mpg is what I was getting during the winter months on average.    Then during the spring when it was around the freezing point and the highways are clear of snow, I was getting around 14.25 mpg.   Summer time, I have been getting around 15.15 on average but certainly some of the trips showed quite a bit better fuel mileage, so much depended on how much or little I had driven around town and number of engine restarts after sitting for a while at each location. But stating a best fuel mileage trip to town pretending that is what the truck gets on average is fooling ones self for sure !.      As I said in a different post, I had driven a 645 mile trip over a couple of days stint to a different destination then these other daily to town examples above, and was done during the summer with nice weather and not bucking a head wind, also keeping at 62 mph and its a rolling landscape type highway drive ( this isn't southern Alberta or Saskatchewan flat lands ) Hand calculated fuel mileage in this case though and it came out to 17.65
    • Chris80s
      Factory front brake rotors...defect?

      By Chris80s · Posted

      On my wife's 2020 Blazer (~69000 miles), we started to notice the brakes pulsating at faster speeds. Typically around town you don't notice anything, but highway/interstate driving you will notice it. I decided to pull of the front tires and look at the brakes. I figured with the milage, the pads should be wearing out to their life span, but they actually looked decent. Still with "meat" on them. One pad has a ridge wearing in it, and that same rotor is showing the ridge too. That's not the concerning part...the other rotor appears to have a raised bump on it!  The picture make it look like a pimple! Very odd and strange! NOTE: These are the factory brakes and rotors.   I'm attaching pictures of the front brakes and what they look like ate ~69000 miles.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...