Vehicle speed sensor circuit located in 2005 chevy trailblazer Ls 6cilinders 4wd on 2005 Chevrolet Trailblazer

I need to know where is located the vehicle speed sensor circuit

Well, being a 4WD vehicle, I have to ask, Which Speed Sensor? The ones for the ABS, Transfer Case or Transmission? Any codes stored? Any 4WD issues or "Service 4WD System" messages? Need more info to help you.
C0055 vehicle speed sensor circuit...2005 chevy trailblazer Lt 4.2 4wd 6cilinders 4doors
Ok. That code relates to the Rear Wheel Speed Sensor Circuit, which is also the Vehicle Speed Sensor. It is the one located on the Transfer Case output shaft housing which is wherwe the rear driveline attaches. There are a couple of engineering bulletins for this condition. If you email me your email and the vehicle VIN # (I only need the last 8 digits of the VIN) I will send you the bulletins, diag code chart and wiring schematics so you can try to figure it out. Don't throw parts/money at it until you know what you need. Could be the connector / wiring harness or the sensor or possibly the PCM or EBCM. My email is
My gmail is and the vin number is 1gndt13s952190573
Email sent. Hope it helps.
I dont have my gmail yet