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2004 chevy trailblazer_ls
49 Posts
Discussion Starter · #1 ·
Do all New TCCM need to be programed at dealer? I have installed a new TCCM and hav no responce at all now! Both axle motor and tranfercase motors are good....dash switch good as well. The old TCCM has more responce as I can here both motors moving and lights on dash switch flash....the trans and transfer case just do not switch....I am locked in 4 low right now.

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