Have had my 2012 for 4 months now. Went out one morning and I had no crank. Battery voltage and amperage looks good, fully in park and tried neutral. Allowed key to remain in aux for plugs to heat, at least a full min. Nothing. Towed to a dealer and for three days it started for them every time. Picked it up yesterday and had three more successful starts and last night I go to leave and no crank. I hear a relay clicking on the passenger side. Tried putting in neutral and rolling the truck a couple inches and still no crank. Today I attempted to jump the passenger side battery. Still nothing? Please help. Thank you for you time.

 

Hi Skijer, welcome to FTE!

I'm going to move this one down to the 6.7L forum, the folks down there may be able to better help you with this.

 

Appreciate it .

 

I seen a similar post but it has not been posted to in a while. Looking to see if any light has been shed on this.

 

When you turn the key on do you hear the LPFP?

 

LPFP? I hear a clicking sound on the passenger side and you can hear the fuel pump directly under the drivers side door.

 

Low pressure fuel pump (the DFCM, black container under left frame rail). Since you can hear that turn on, it's not that.
Is it clicking only when you attempt to start? I don't know what that would be but maybe someone knows.
It may help to record this so you can show your dealer what it's doing and the different areas that are making sounds.

 

Yes, only clicking when I turn the key trying to start. Same click I get when it does start. Dealer had it three days and started every time. I question whether they hooked it to a computer or tested batteries or anything at all being that they could not duplicate the no crank issue. Out of curiosity how long does it take these plugs to heat up when it's 30 degrees outside? I've let them heat up to thirty seconds at times before even trying to start if. Is that not enought time? The glow plug light goes out on the dash within seconds all the time.

 

There's absolutely no reason to let it wait 30 seconds before starting, these aren't your grandfather's diesel engines. These glow plugs hit their maximum temp of over 2200° F in about two seconds.

 

I was sure I read that somewhere but just wanted to be sure on that. Would have felt real stupid if I was not waiting long enough and that's why it won't crank.

 

Nope, it's supposed to crank over the instant you turn the key to start, whether the glow plug light is on or not. I believe the only reason to wait is for easier starting and more complete combustion on startup.

 

Been all over the net and can't find anyone having this problem as I am. Hoping it's something as simple as a ground fault or bad starter.

 

If it's clicking, sounds like a bad starter.

 

Would the starter stop working for a day then work again for a couple days and back to not working though? I was going to see if I could jump the starter but I am not 100% on where or how to do that.

 

Dealer opens at 7am. Even if you got it started, would you really trust it not to get you stranded?

Dealers seem really good fixing trucks that are 100% broke. Intermittent problems, not so good.

Good luck getting it fixed. If the dealer cannot fix it on attempt #2, time to find a better dealer. I wouldn't mind taking a few days to get it fixed, my dealer provides a car, but getting a broken truck back sucks.