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Re: Need help with GDS2 (GM Diagnostics)
Posted to HD/Fleet Forum on 1/13/2021 4 Replies

The heater operation with GDS2 on the Dirtymax are in the Glow Plug Control Module. Then depending on your soot mass and if the reductant light is on will dictate if you need to do a service regen and RFQT. Login to read more.

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