This is a Engine Computer cloning service For GM Chevrolet GMC Hummer 5.3L 6.0L 7.0L with E67 style computers. We will copy all the information from your original unit into the replacement that you provide to us. You must ship both your original computer and a replacement unit with matching part & hardware number. We will Clone your unit and ship next business day once received. 

Your computer needs OBD communication for this service.