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The Mopar Performance SRT TCM does not work on my 08 300c SRT

6K views 12 replies 7 participants last post by  Hemissary 
#1 ·
Does anyone have a Mopar Performance SRT TCM, p/n P5155177, on an 08 300c SRT?

I bought one in june. It performed no different than a stock TCM. Stock shifts, and the Hold In Gear feature did not work. The car still up-shifted automatically in Autostick.

Has anyone else installed this and had it not work? All I want is the Hold In Gear feature.

This MTCM is advertised to work on 2005-2009 6.1's (as printed on the instruction sheet).
 
#2 ·
Was it brand new...or used?
 
#3 ·
i try a used one and a new one
 
#10 ·
i try a used one ,and a new one on my 2008 srt ,none of them work on my 2008 srt ,the used one work fine on 2006 srt.
 
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