Transfer Case Interchange On Denali

By mumzer
July 22, 2008 in Ask A GM Technician

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mumzer

Posted July 22, 2008

I have an 01 denali that has just killed its second np3 (NPG149) transfer case. granted the miles are high, but i'd love to get a different box in there.

i know the spline patterns and yokes are the same, but can anyone here tell me what is required to install the later BW4485 AWD case as used in later model year AWD Denalis?

much appreciated - the BW boxes are much easier to find and are apparently more durable.

thanks

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