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programming tcm
Posted to Technical Discussion Forum on 5/28/2025 6 Replies

i got a quick question. i have a 2002 chevy 2500 with duramax and allison trans,replacing tcm on radiator shroud and need to program. we have a snapon pass thru pro4 and when im in tech line connect and sps it wont connect to truck,is this truck to early to do... Login to read more.

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