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How to find which 10-speed transmission on 2023 Sierra 1500 Denali Ultimate 6.2L engine

ACinaKC
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ACinaKC Enthusiast

ACinaKC

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I think there are 2 types of 10-speed transmissions available for my Sierra.  I have the 6.2 liter engine.  Is there a code printed somewhere on the truck that I can find it?

repairman54 Enthusiast

repairman54

Posted
Posted

In the drivers door jamb is a sticker with a QR code. Scan the code and it will tell you the RPO codes, RPO codes are the DNA of the truck. 

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redwngr Senior Enthusiast

redwngr

Posted
Posted (edited)
2 hours ago, ACinaKC said:

I think there are 2 types of 10-speed transmissions available for my Sierra.  I have the 6.2 liter engine.  Is there a code printed somewhere on the truck that I can find it?

 

It will be in the QR code at the bottom of the drivers doorpost

(most smartphone cameras have built-in decoder)

 

I think someone is misleading you.

 

On 2023 Denali Ultimate, the

- 3.0 has MCQ  

- 6.2 has MHS 

 

and the NHQ transfer case  (the 2 speed one)

 

(8 speed, and column shift version applications also shown for completeness.)

image.thumb.png.0a45eac58031d824cf3350e5827576cd.png

image.thumb.png.2112a1def9eee162c8b04f30d68d7372.png

 

 

Probably hard to read with usage chart so without chart -- 

image.png.7429b7f09cc73b1fef12ad4d075c2af5.png

 

 

 

Edited by redwngr
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ACinaKC Enthusiast

ACinaKC

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Redwngr - Mine must be MQC because the shifter isn’t mounted on the column.  It’s stick shift-like, on the console, spring loaded to center.  Thanks for the detailed response.

GETGONE Enthusiast

GETGONE

Posted
Posted

Did you even read? MQC is ONLY available with the 3.0 diesel. MHS is the one for the 6.2L.

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newdude Senior Enthusiast

newdude

Posted
Posted (edited)
4 hours ago, ACinaKC said:

Redwngr - Mine must be MQC because the shifter isn’t mounted on the column.  It’s stick shift-like, on the console, spring loaded to center.  Thanks for the detailed response.

 

 

MHS with the 6.2 as GETGONE makes note of.  MQC is 3.0 Duramax.

 

The 1500 10 speeds are all a 10L80 at the end of the day.  Just comes down to what engine they are paired with (dictates torque converter and programming specs) and how they are shifted (column shift with cable or ETRS shift by wire so different valve bodies and wiring internal) which makes up the differences in them.  Other than that, all 10L80s.  

 

Edited by newdude
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ACinaKC Enthusiast

ACinaKC

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Yes I read it.  But I focused on the MHS said it was a column shifter which I don’t have.  So I agree it must be MHS.  Thanks getgone for your exceptional reading skills…Quite the attitude there.

ACinaKC Enthusiast

ACinaKC

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Posted (edited)

I couldn’t find the door sticker with the QR code.

 

nevermind, found it.

Edited by ACinaKC
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diyer2 Senior Enthusiast

diyer2

Posted
Posted (edited)

QR code 

 

 

Edited by diyer2
newdude Senior Enthusiast

newdude

Posted
Posted
On 3/28/2024 at 9:36 AM, ACinaKC said:

Yes I read it.  But I focused on the MHS said it was a column shifter which I don’t have.  So I agree it must be MHS.  Thanks getgone for your exceptional reading skills…Quite the attitude there.

 

 

Its MHS.  Read the description again.  

 

MHS - Transmission, 10-speed automatic with Electronic Transmission Range Selector, (ETRS), electronically controlled with overdrive, tow/haul mode and steering column paddle shifters. Includes Cruise Grade Braking and Powertrain Grade Braking
 

Included and only available with (L84) 5.3L EcoTec3 V8 engine and (A50) bucket seats or (L87) 6.2L EcoTec3 V8 engine.
 

 

 

"Included and only available with 5.3 and 6.2".  The MQC transmission is "Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine and (A50) bucket seats".

 

ETRS is the shift by wire console mounted shifter.  

 

So 6.2 Denali means you have a console which automatically means you have the ETRS shifter and therefore the MHS transmission RPO code.  

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