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I've got a 2011 tahoe police edition..I believe it has an Allison Trans in it ..6speed manual and automatic with the Trans temp on the DIC. I heard if there's a Trans temp then it's an Allison also my buddy has a 08 6liter diesel with the same controls as mine. Anyway I recently scattered my transfer case can anyone tell me what what years of transfer case are going to be compatible with my tranny wiring and all. Its not push button 4wd it's dial with auto 4h 4l
 

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You have a GM transmission, a 6L80, RPO code MYC.

The transfer case is a Magna Powertrain, model 3023, RPO code NQH
 
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