'22 Platinum 6.7 and I failed to add the supplemental heat when I built it. Can I add this option now? Hard install?

 

I'm sure it could be added, probably have to disassemble the dash to do it, then would need to be added to the electronics with forscan or oem scan tool.
Wouldn't be cheap or easy.
Also, the factory option comes with the 397 amp dual alternators to make sure it has sufficient amps.

 

There is a thread here that covers how to do it. It's a very complex and fairly expensive job. It would be easier to execute a mission to the moon. The consensus is if it's not done when the truck was built, don't bother.

 

Thanks all, guess I'll go without lol. Lesson learned on the next one.

 

Honestly, I had it on my 08’, and never noticed any difference or fast heat. I haven’t ordered it since. Maybe it’s better today?

 

Maybe. I have nothing with which to compare my 2018 to. It may be a conflict with your expectations, or how you were using it. For clearing a frosty or icy windshield, it works pretty good. It can knock down that biting chill while you wait for seat heaters to come up to speed. And really, other than windshield defrosting, seat heaters are more effective and bring more comfort than the supp heater. That is why I got front and rear heated seats. I don't know why it is not standard for every diesel build other than the expense of the alternator upgrade. It's not like it adds a grand to the build.

 

Order a new one with the option and trade yours in. In todays market you probably would make money.

im not kidding.

 

It makes a noticeable difference to me. It's not a high heat but if I remote start my truck and get in it say 5 minutes later it is definitely warmer. It also helps clear the windshield of frost which can take forever without it as these diesels take a long time to warm up especially at an idle. If you keep your truck in the garage you probably won't notice it since you wouldn't remote start your truck.

 

I would try to add it. It cuts down on the cold bite till the engine warms.

 

Just plug it in for a few hours and that will help out a bunch.

 

not familiar with adding the supp heat. That said you could hookup the high idle circuit to one of your upfitters. Then you just have to remember to set the emergency brake when exiting the vehicle. Upfitters could be left on as it needs the E brake and park requirements met to go into high idle mode. It would help warm the engine a bit faster.

 

I didn’t add it to mine. If I could go back I would have added it, but I didn’t know any better… I did add the engine block heater though. I have only been in temps as low as the mid to high 20’s so far but with the engine block heater plugged in for a few hours I haven’t had any concerns. The EOT starts higher/warmer than it would without the heater and seem to climb pretty fast once I start driving. I’m about 4 miles from work and drive through several red lights to get here, so no chance for running higher RPMs but the air coming from the vents are warm by the time I get here. I do have a high idle wired into one of my upfitter switches so I typically remote start the truck when I’m putting my boots on to walk out the door. I leave the high idle engaged so when it cranks the RPMs kick up to 1200, then I walk out and unplug the truck and roll the extension cord back up. So far my EOT has been around 70-80F by the time I get in the truck and get settled and pull out of the drive. Around 100F I can start feeling warm air pretty good and it doesn’t take long to get there. I just got a Banks IDash, so I’m curious to see what my ECT’s actually are too when using the engine block heater.

Adding the engine block heater is less expensive and easier than adding the supplemental heat aftermarket as far as I understand.

 

I have the supplemental cab heater and it works great, cold truck but extremely warm heater output.
It actually sometimes works too well, have to turn the temp selector way down.
And, for the cost, it was just a no-brainer to me, and you get the dual alternators.

 

Mines in my garage,and I remote start it every morning.At -10 or more sometimes.....you notice.

 

Daddy, unless you have the garage door open, or some serious ventilation, or a detached garage, that’s not something I would recommend as a safe practice. Just my two cents.

Joe