My '21 2500 AT4 Already in the shop. LOL

[YourSpecialist]

So I ordered my '21 2500 AT4 and finally received it last week. Literally driving it off the lot, it threw a check engine light on the way home. I ended up taking it back to the dealer the next day to drop it off. Got a call a few hours later and was told that the DEF heater tank was to blame. Now the problem is that theres not even a part number for the new DEF tank for the '21. So they have my truck and are waiting for GMC to let them know when they would be able to get a replacement one. Unfortunately, they cant even give me a timeline as to when one will be available. So now im stuck with no truck. lol

[doozer78]

Should be same part # as the 2020 truck

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[maynard9089]

GM has really dropped the ball with the launch of the T1 HD platform.  The bulk of the issues are around part failures at least and not the craftsmanship of the workforce.  GM is building these trucks around the clock and its a struggle for suppliers to maintain the inventory levels needed for production let alone repair parts.   My 2020 has had one problem after the next.  New computer module, new brakes front and rear, steering shaft, leaking transfer case seal, replaced battery, misaligned from the factory and multiple electronics issues that are uncorrected.  My dealer is working with me to get me out of it and into an identical '21.  The problem I am having now is that the new truck arrived last Tuesday at the dealership along with several others that had already been sold but GM has yet to send them the MSO paperwork which is required for the sale and title.  I got a text about an hour ago that they weren't in todays mail either.  So the trucks sit there until the papers arrive.

[newdude]

26 minutes ago, doozer78 said:

Should be same part # as the 2020 truck

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Different p/n from 2020 however the 2020# is replaced by the 2021 # so yes they are the same in the end.  

Edited November 17, 2020 by newdude

[newdude]

35 minutes ago, YourSpecialist said:

So I ordered my '21 2500 AT4 and finally received it last week. Literally driving it off the lot, it threw a check engine light on the way home. I ended up taking it back to the dealer the next day to drop it off. Got a call a few hours later and was told that the DEF heater tank was to blame. Now the problem is that theres not even a part number for the new DEF tank for the '21. So they have my truck and are waiting for GMC to let them know when they would be able to get a replacement one. Unfortunately, they cant even give me a timeline as to when one will be available. So now im stuck with no truck. lol

 

There is a part# just no inventory.  That is going to be your holdup.  

[YourSpecialist]

Thanks for all the replies. Hopefully they get these parts in ASAP. They are trying to ask for the part from one of the trucks they have on order. Crossing my fingers and hoping this doesn’t last a long time.