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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.3 T, 4L60E/M30REPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSOEM CONNECTOR END VIEWSAUTOMATIC TRANSMISSION INLINE 20-WAY CONNECTOR END VIEW ( 4L60-E/4L65-E/4L70-E)ENGINE SIDE TO TRANSMISSION SIDE CONNECTOR END VIEW
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30

Engine Side to Transmission Side Connector End View

2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30SECTION Engine Side to Transmission Side Connector End View
Automatic Transmission Inline 20-Way Connector End View

GM684844Courtesy of GENERAL MOTORS CORP.
GM808696Courtesy of GENERAL MOTORS CORP.
Automatic Transmission Inline 20-Way Connector End View

Connector Part Information 
  • OEM: 12160493
  • Service:
  • Description: 20-Way F Micro-Pack 100 W Series (GY)
 Connector Part Information 
  • OEM: 12160782
  • Service:
  • Description: 20-Way M Micro-Pack 100 W Series (GY)
Terminal Part Information 
  • Terminal/Tray:
  • Core/Insulation Crimp:
  • Release Tool/Test Probe:
 Terminal Part Information 
  • Terminal/Tray:
  • Core/Insulation Crimp:
  • Release Tool/Test Probe:
Engine Side to Transmission Side

Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function
A L-GN 1222 1-2 Shift Solenoid Valve Control A L-GN 1222 1-2 Shift Solenoid Valve Control
B YE/BK 1223 2-3 Shift Solenoid Valve Control B YE 1223 2-3 Shift Solenoid Valve Control
C OG/BK 1228 PC Solenoid Valve High Control C PU 1228 PC Solenoid Valve High Control
D L-BU/WH 1229 PC Solenoid Valve Low Control D L-BU 1229 PC Solenoid Valve Low Control
E PK 1020 Ignition 0 Voltage E RD 839 Ignition 1 Voltage
F-K - - Not Used F-K - - Not Used
L YE/BK 1227 TFT Sensor Signal L BN 1227 TFT Sensor Signal
M TN 2762 Low Reference M GY 452 Low Reference
N PK 1224 Transmission Fluid Pressure Switch Signal A N PK 1224 Transmission Fluid Pressure Switch Signal A
P OG 1226 Transmission Fluid Pressure Switch Signal C P OG 1226 Transmission Fluid Pressure Switch Signal C
R D-BU 1225 Transmission Fluid Pressure Switch Signal B R D-BU 1225 Transmission Fluid Pressure Switch Signal B
S WH 687 3-2 Shift Solenoid Valve Control S WH 687 3-2 Shift Solenoid Valve Control
T TN/BK 422 TCC Solenoid Valve Control T BK 422 TCC Solenoid Valve Control
U BN 418 TCC PWM Solenoid Valve Control U TN 418 TCC PWM Solenoid Valve Control
V-W - - Not Used V-W - - Not Used
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.