T12 Automatic Transmission Assembly X2

2020 Chevrolet Camaro SS, 2D Coupe, Standard TransSECTION T12 Automatic Transmission Assembly X2
GM4757907Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Transmission Case
  • OEM Connector: 2203990-1
  • Service Connector: Service by Harness - See Part Catalog
  • Description: 13-Way F 1.2 MCON Series (BN)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Name Core Crimp Insulation Crimp
I Not Required Not Available No Tool Required Not Required Not Required Not Required Not Required
Pin Size Color Circuit Function Terminal Type ID Option
1 0.5 YE/GY 3337 Transmission Internal Mode Switch Mode Control Y I -
2 0.5 YE/ 3338 Transmission Internal Mode Switch Mode Control X I -
3 0.5 YE/OG 6358 Output Speed Signal I -
4 0.5 WH/BU 6254 Transmission Input Speed Sensor Signal I -
5 0.5 VT/GN 4510 Transmission Intermediate Speed Signal I -
6 0.5 WH/VT 6353 Input Speed Signal I -
7 0.5 BN/YE 585 Transmission Fluid Temperature Sensor Signal I -
8 0.5 OG/ 480 Engine Control Vehicle Sensors 5 Volt Reference 1 I -
9 0.5 BN 6387 Transmission High Side Driver 1 Control I -
10 - - - Not Occupied - -
11 0.5 WH 6388 Transmission High Side Driver 2 Control I -
12 0.5 BU 4171 Transmission Input Shaft Speed Sensor Circuit 9V Reference I -
13 0.5 GN 4170 Transmission Output Shaft Speed Sensor Circuit 9V Reference I -
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.