RPO Code for 6 Speed
Thread Starter
Pro
Joined: Feb 2005
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From: Long Beach CA
RPO Code for 6 Speed
I have a '96 LT-4 Grand Sport . I was checking the RPO codes on another GS today and noticed two differend RPO codes for the 6 speed trans.
ML9 - Transmission, Manual 6 Speed ZF (mine)
MN6 - Merchandised Transmission, Manual 6 Speed (the other GS)
Does anyone know what the difference is?
PS Would have asked on the GSR but forgot my password!
ML9 - Transmission, Manual 6 Speed ZF (mine)
MN6 - Merchandised Transmission, Manual 6 Speed (the other GS)
Does anyone know what the difference is?
PS Would have asked on the GSR but forgot my password!
Last edited by GSjimbo; Sep 16, 2005 at 10:38 AM.
Melting Slicks
Joined: Mar 2005
Posts: 2,352
Likes: 230
From: Northeast FL
Below are the RPO codes used typically used for transmissions. You sure yours isn't ML9?
* M30 - Automatic 4-speed electronic transmission
* MD8 - Automatic 4-speed transmission
* MK2 - Manual 4-speed Doug Nash transmission
* ML9 - Manual 6-speed, ZF-transmission
* MM0 - Automatic transmission
* MM4 - 4-speed manual transmission
* MN6 - 6-speed manual transmission
* MX0 - Automatic transmission
* MY6 - Manual 4-speed transmission
* M30 - Automatic 4-speed electronic transmission
* MD8 - Automatic 4-speed transmission
* MK2 - Manual 4-speed Doug Nash transmission
* ML9 - Manual 6-speed, ZF-transmission
* MM0 - Automatic transmission
* MM4 - 4-speed manual transmission
* MN6 - 6-speed manual transmission
* MX0 - Automatic transmission
* MY6 - Manual 4-speed transmission
Thread Starter
Pro
Joined: Feb 2005
Posts: 654
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From: Long Beach CA
Originally Posted by jwt1603
Below are the RPO codes used typically used for transmissions. You sure yours isn't ML9?
Melting Slicks
Joined: Mar 2005
Posts: 2,352
Likes: 230
From: Northeast FL
GM had (has?) a tendency to have variations in the codes they used. At the top of this section is a sticky that lists all of the codes. Every once in a while new ones are added. Browse that and you'll see that there are a lot of different codes from year to year for the same option. Sometimes the codes changed inside a model year.
