LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2019 >> ATS Base, AWD >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Wiring Diagrams >> Component Connector End Views (K20-K83) >> Component Connector End Views >> K71 Transmission Control Module (LF4/LGX)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

K71 Transmission Control Module (LF4/LGX)

GM4024881Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 12672857
  • Service Connector: 19330900
  • Description: 66-Way F 0.64, 2.8 Series, Sealed (BK with BK Terminal Position Assurance)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Name Core Crimp Insulation Crimp
I 13579770 J-35616-4A (PU) J-38125-11A Not Available Not Available Not Available Not Available
II 19330179 J-35616-64B (LT BU) J-38125-215A Not Available Not Available Not Available Not Available
Pin Size Color Circuit Function Terminal Type ID Option
1 - 2 - - - Not Occupied - -
3 0.5 GY/GN 6403 Clutch D Control II M5T/M5U
4 - 7 - - - Not Occupied - -
8 0.5 YE/BU 4171 Transmission Position Sensor A 9V Reference I -
9 - 16 - - - Not Occupied - -
17 0.5
0.5
WH
WH
4508
4508
Transmission Clutch G Control
Transmission Clutch G Control
II
I
M5N
M5U
18 - 20 - - - Not Occupied - -
21 0.5
0.5
GN/WH
GN/WH
6380
6380
TCC On/Off Solenoid A Control
TCC On/Off Solenoid A Control
II
I
M5N
M5U
22 0.5
0.5
YE/BN
YE/BN
6210
6210
TCC On/Off Solenoid B Control
TCC On/Off Solenoid B Control
II
I
M5N
M5U
23 - 34 - - - Not Occupied - -
35 0.5 VT/BK 2139 Run/Crank Ignition 1 Voltage I -
36 - - - Not Occupied - -
37 0.5
0.5
BU
BU
2500
2500
High Speed GMLAN Serial Data (+) 1
High Speed GMLAN Serial Data (+) 1
II
I
F46+M5N
-F46+M5N
38 0.5 WH 2501 High Speed GMLAN Serial Data (-) 1 II -
39 - 53 - - - Not Occupied - -
54 0.5
0.5
WH
WH
2501
2501
High Speed GMLAN Serial Data (-) 1
High Speed GMLAN Serial Data (-) 1
I
II
LGX
M5U
55 - 64 - - - Not Occupied - -
65 1.5 BK/WH 451 Signal Ground I -
66 - - - Not Occupied - -