Transfer Case Model #

[ajcain79]

I need to know my transfer case model number. How do I find out?

 

Here's my truck:

 

2007 GMT-900 Vortec Max 6.0 w/NHT package (heavy duty trailering)

[ajcain79]

The RPO is NQH

[ajcain79]

I think I just found the model. I believe it is MP3023

Now I need to find the High and Low range of this transfer case.

[ajcain79]

High range: 1.00:1

Low range: 2.69:1

 

 

Thanks for your help everyone!

[RaddHazzard]

no prob.

[Nytemare]

yeah..any time man....questions like yours rock.

[BrockwayMT]

NQH-LD 27T

[ajcain79]

NQH-LD 27T

 

Can you or anyone show me where I can verify this. All the info I googled says NQH = MP3023.

 

I can't find any mention of a "LD 27T" anywhere.

[BrockwayMT]

NQH-LD 27T

 

Can you or anyone show me where I can verify this. All the info I googled says NQH = MP3023.

 

I can't find any mention of a "LD 27T" anywhere.

 

 

Nope, I'm giving it off the top of my head. 07 half ton has 4 speed trans which has a 27T output and half tons are the light duty transfer case which has a 1.25" rocker pin chain.

 

There is no model stamped in those units, only a serial number. The tcase originally has a sticker with the GM part number and GM broadcast code. Even if the sticker has not fallen off I don't think you can read it in the vehicle. The sticker is towards the front of the transfercase at the top.

[Nytemare]

NQH-LD 27T

 

Can you or anyone show me where I can verify this. All the info I googled says NQH = MP3023.

 

I can't find any mention of a "LD 27T" anywhere.

 

OK...so from what I have been reading you either have an NP 236 or an NP/NVG 246

 

I would wager money on the latter as it more describes what you should have....mostly the number 4...Part time plus full time, electrically shifted. #3 says its a Part time electronicly shifted case...more like what should be in the 2500 model. Basically, how it reads to me a 246 has the auto position and the 236 does not.

 

NP/NVG T-Case explained:

http://www.bc4x4.com/faqs/yj.cfm?cat=6&faqid=162

 

I am not 100% sure if GM stuck with the NP/NVG T-Cases in the NNBS trucks though.