6.2L (L9H) Owners - Get all your questions answered here

[itsbo1313]

Where do I find that on which sticker?

[swathdiver]

2 hours ago, itsbo1313 said:

Where do I find that on which sticker?

In the door jamb there will be a Tire and Loading Information sticker, white and yellow.  It will list the tire sizes with inflation pressures, seating capacity and the payload capacity.  Subtract that from your 7200 GVWR and you'll know your truck's original curb weight.

 

This is my Yukon XL's:

[itsbo1313]

[swathdiver]

14 hours ago, itsbo1313 said:

My NHT also has the different air pressures for the front and rear tires.  Despite the smaller cab, she weighs basically the same as my NHT.  My All-Terrain is about 75 pounds heavier!  All are SLTs so I'm not sure where the extra weight comes from, maybe sound deadening?

 

How do you like it so far?  Discovered anything unique about it?

 

 

 

Still have the Denali?

Edited September 1, 2023 by swathdiver
grammar

[itsbo1313]

I like it a lot.  I’m considering Rancho Quicklift struts to level it.  We still have the Denali.  The Sierra is much louder in the rain. Lol.  Less sound deadening. 

[swathdiver]

That's awesome Sean, two 6.2s in the driveway!

[White.6.2]

have a 2013 sierra Denali. The motor let go and the trans was getting there as well. I just bought another l9h with a 6l80 already together but out a 2010 sierra Denali. Am I plug and play and drop in and bolt up no ecu change or tuning? Does the tranny have different programming is it just gonna go into limp mode? I hope the motor will directly bolt in at least I’m hoping anyway. Please help I’m no gm technician

[CamGTP]

The TCM has to be flashed before it can drive.

 

If you installed it the way it is, it has the OS (operating system/program) from the 2010 truck you got it from. That will not match with the VIN/OS pair that your 2013 truck has.

 

You can do the full install. Then tow it to a dealership and they can flash the trucks PCM/TCM with the latest program for your VIN.