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3. Disconnect the OEM ECU from the wiring harness
Remove the 2 Phillips screws securing it to the vehicle
Remove OEM ECU from vehicle.
4.
Connect the Haltech Sport GM to the vehicles wiring harness
Connect the USB cable and optional Auxiliary harness (#HT040003 if required)
Mount the ECU to the vehicle using 3M Velcro tape and cable ties
Figure 3 – Haltech Sport GM Mounted in vehicle
Figure 2 – OEM ECU Removal
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