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HOMESERVICE MANUALSCHEVROLET2014EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISQUICK LOOKUPSWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - K17 (EXCEPT JL4) TO K9 (X1)COMPONENT CONNECTOR END VIEWSK71 TRANSMISSION CONTROL MODULE (M30)
2014 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G

K71 Transmission Control Module (M30)

2014 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION K71 Transmission Control Module (M30)
GM1544228
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 15463921
  • Service Connector: 88987979
  • Description: 49-Way F GT 280 Micro-Pack 64 Series, Sealed (BK)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Core Crimp Insulation Crimp
I Pins: 1-2, 5-7, 11, 15-16, 19-20, 25, 31, 37-38, 41-42 - 13575528 J-35616-64B (L-BU) J-38125-21 15359541 4 M M
II 13575386 J-35616-4A (PU) J-38125-553 15392777 23 D 5
K71 Transmission Control Module (M30)

Pin Size Color Circuit Function Terminal Type ID Option
1 0.5 BN 418 Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve Control I -
2 0.5 L-GN 1222 Shift Solenoid A Valve Control I -
3 0.5 OG/BK 1230 Automatic Transmission Input Speed Sensor (AT ISS) High Signal I -
4 - - - Not Occupied - -
5 0.5 OG/BK 6399 Replicated TOS Signal I -
6 0.5 TN 2501 High Speed GMLAN Serial Data Bus (-) I -
7 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+) I -
8-10 - - - Not Occupied - -
11 0.5 D-BU 5985 Accessory Wakeup Serial Data I -
12-14 - - - Not Occupied - -
15 0.5 TN 2501 High Speed GMLAN Serial Data Bus (-) I -
16 0.5 L-GN/BK 822 Vehicle Speed Sensor (VSS) Low Signal I -
17 0.35 L-BU/WH 1229 PC Solenoid Valve Low Control I Sol. A
18 - - - Not Occupied - -
19 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+) I -
20 0.5 YE/BK 1223 Shift Solenoid B Valve Control I -
21-22 - - - Not Occupied - -
23 0.35 GY 773 Transmission Range Switch Signal C I -
24 - - - Not Occupied - -
25 0.5 TN/BK 422 Torque Converter Clutch (TCC) Solenoid Valve Control I -
26-28 - - - Not Occupied - -
29 0.35 TN/WH 771 Transmission Range Switch Signal A I -
30 0.35 TN 452 Low Reference I -
31 0.5 PK 2139 Ignition Voltage I -
32 0.35 RD/WH 1840 Battery Positive Voltage I -
33-34 - - - Not Occupied - -
35 0.35 YE/BK 1227 Transmission Fluid Temperature (TFT) Sensor Signal I -
36 - - - Not Occupied - -
37 0.5 TN 2501 High Speed GMLAN Serial Data Bus (-) I -
38 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+) I -
39 0.35 WH 776 Transmission Range Switch Signal P I -
40 0.35 OG/BK 1228 PC Solenoid Valve High Control I Sol. A
41 0.5 PU/WH 821 Vehicle Speed Sensor (VSS) High Signal I -
42 0.5 L-BU/WH 6311 Torque Converter Clutch (TCC) Brake Signal I -
43-44 - - - Not Occupied - -
45 0.35 D-BU/WH 1231 Low Reference I -
46 0.35 YE 772 Transmission Range Switch Signal B I -
47-48 - - - Not Occupied - -
49 2 BK/WH 1551 Ground - -
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:

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