If you know for sure you didn’t get them mixed up one time I’d have a weird feeling of them saying it was fuel an the fluid they had accidentally got thrown out, seems pretty odd to me

 

I agree. Seems very odd!

 

I would imagine it would be difficult at best to use the diesel nozzle to get fuel in the def filler? Seems like you would have to kind of shoot the diesel in their because the nozzle wouldn't fit--right? Point being.. I feel like you would know if you fudged this up as it would make a mess.

 

I agree with you 100 percent. He would of had to make a heck of an effort to do this.

 

I would contact GM and find another dealership

 

Does anybody know of a way diesel fuel could’ve got into the DEF tank through the system. Maybe a vent.

 

Diesel in the DEF tank is BS. That's the exact reason why the DEF inlet is significantly smaller than the fuel's. You would have to physically hold the nozzle in front of the DEF inlet since it can't fit inside the DEF tube...

 

Boise Rob, thanks for the reply. The dealer hosed me on heater exchange. Which they said was covered under warranty. Then trying to blame me saying I put diesel I Def tank.
wonder who I should contact at GM?

 

Boise Rob, thanks for the reply. The dealer hosed me on heater exchange. Which they said was covered under warranty. Then trying to blame me saying I put diesel I Def tank.
wonder who I should contact at GM?

The only other possibility is what I ran into when I was a tech rep for a major aviation manufacturer. New diesel fueling truck naturally run with DEF tanks on them. There is an option for aircraft jet fuel to mix in PRIST. It is an additive that help prevent damage from water in the tanks and icing fuel issues. There have been reported cases where line service people have put DEF in the PRIST injection tank. The reason I bring this up is if you get DEF from sealed sources or from a station that has a separate DEF pump. I could see someone at a gas station accidentally putting diesel in the DEF holding tanks. Just an idea. Dean

 

Thanks Dean, I’ve only purchased Def in boxes and put it directly in Def tank. I’m going to have to find out how to get a hold of someone at GM and see if they can honor the warranty. Windrider

 

I think you have a strong case. To deny warranty the dealer should have to prove to you that diesel was in the DEF tank. Since the two don't mix they should have at least gave you pics or let you see it for yourself before denying warranty. Smells fishy. D

 

I asked for a sample of Def so I could have it tested didn’t get it. Said Tec disposed it.

 

I had this exact issue traveling through SLC in a LML with 20k miles on it. Just like you, we only put in boxes of def, there's no way diesel has been put in the def tube under the hood. I laughed at that stupidity. They wanted to replace at $4500 (this was in 2016). Let's just say that after 7 days of this game and hotels bills adding up, I ended up with an alternate solution and decided that any warranty on emissions would not be stood behind. There was sawzall use in the hotel parking lot and a reprogram. It ran better than ever after that.

In your case, I'd find someone else to work on it. I'm sure someone else can be more specific, but I've found that most of the time it's something stupid like a sensor or wire. The dealer just wants your money.

 

The onus is on the dealer to prove that it's not a warranty claim, rather than on you to prove that it is.
Their convenient disposal of the supposedly tainted DEF contents smells of Ratus Ratus.
Without clear evidence of the fluid being tainted, the dealer does not have a leg to stand on

Google 'GM warranty phone number' for the phone number to call:
If you would prefer to contact us by phone, we can be reached at 1-800-462-8782 Monday - Friday, from 8:00 a.m. to 9:00 p.m. (Eastern Standard Time) and Saturday 9:00 a.m. to 6:00 p.m. (Eastern Standard Time).

 

The onus is on the dealer to prove that it's not a warranty claim, rather than on you to prove that it is.
Their convenient disposal of the supposedly tainted DEF contents smells of Ratus Ratus.
Without clear evidence of the fluid being tainted, the dealer does not have a leg to stand on

Google 'GM warranty phone number' for the phone number to call:
If you would prefer to contact us by phone, we can be reached at 1-800-462-8782 Monday - Friday, from 8:00 a.m. to 9:00 p.m. (Eastern Standard Time) and Saturday 9:00 a.m. to 6:00 p.m. (Eastern Standard Time).

Chatty,
The phone number is GM. Are you a rep. and if so what is your extension.

 

Isnt the fill location for DEF under your hood?

 

Thats what I was wondering.

 

Thanks for your input Chatty