Step 6: The control module “T’s” into the LOWER engine control wiring harness. It’s a simple plug-and-run installation.

Outdoor Adventure Box

Step 6: The control module “T’s” into the LOWER engine control wiring harness. It’s a simple plug-and-run installation.

Step 5: Control knob placement high on the dash makes it easy to see and access. Three stages of exhaust braking/downshifts are available with the turn of the selector.

Step 7: GM Duramax’s two master harness connectors use blue plastic levers to hold them in place. Just lift up on levers to pull plugs out.

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