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Home >> GMC >> 2021 >> Yukon XL AT4 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Component Connector End Views (K4 (X3) - K20 (X2)) >> Component Connector End Views >> K20 Engine Control Module X2 (L84/L87)

K20 Engine Control Module X2 (L84/L87)

GM1673472Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 35327566
  • Service Connector: 19333090
  • Description: 73-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
I 13587518 J-35616-35 (VT) J-38125-11A
II 19354746 J-35616-64B (L-BU) J-38125-215A
Pin Size Color Circuit Function Terminal Type ID Option
1 0.5 GN / YE 3212 HO2S Heater Low Control Bank 2 Sensor 1 II -
2 0.5 GY 5493 Cylinder Deactivation Solenoid Valve Control 3 II -
3 0.5 BK / YE 548 Engine Control Sensors Low Reference 1 II -
4 - 6 - - - Not Occupied - -
7 0.5 GN / WH 4622 Engine Control Module LIN Bus 2 II -
8 0.75 GN / VT 4621 Engine Control Module LIN Bus 1 II -
9 - - - Not Occupied - -
10 0.5 VT / GY 3110 HO2S High Signal Bank 1 Sensor 1 II -
11 0.5 WH / BK 3111 HO2S Low Signal Bank 1 Sensor 1 II -
12 0.5 YE / BU 2124 Ignition Control 4 II -
13 0.5 BN / BU 2126 Ignition Control 6 II -
14 0.5 VT / BU 5294 Powertrain Main Relay Fused Supply Voltage 5 II -
15 0.5 VT / BU 5294 Powertrain Main Relay Fused Supply Voltage 5 II -
16 0.5 VT / BU 5294 Powertrain Main Relay Fused Supply Voltage 5 II -
17 0.5 GY / WH 3113 HO2S Heater Low Control Bank 1 Sensor 1 II -
18 0.5 YE / GY 2493 Cylinder Shutoff Solenoid Enable Signal 3 II -
19 - 25 - - - Not Occupied - -
26 0.5 VT / WH 3210 HO2S High Signal Bank 2 Sensor 1 II -
27 0.5 YE / WH 3211 HO2S Low Signal Bank 2 Sensor 1 II -
28 0.5 GN / BU 2123 Ignition Control 3 II -
29 0.5 BU / GY 2125 Ignition Control 5 II -
30 0.75 BK / GY 2130 Ignition Control Low Reference Bank 2 II -
31 0.5 BN 5496 Cylinder Deactivation Solenoid Valve Control 6 II -
32 0.5 YE / BN 2496 Cylinder Shutoff Solenoid Enable Signal 6 II -
33 0.75 WH / BN 3223 HO2S Heater Low Control Bank 2 Sensor 2 II -
34 - - - Not Occupied - -
35 0.5 BU 179 Engine Oil Pump Control II -
36 0.5 YE / GN 2494 Cylinder Shutoff Solenoid Enable Signal 4 II -
37 0.75 VT / BU 5294 Powertrain Main Relay Fused Supply Voltage 5 II -
38 - - - Not Occupied - -
39 0.5 WH / RD 480 Engine Control Vehicle Sensors 5 Volt Reference 1 II -
40 - 45 - - - Not Occupied - -
46 0.5 YE / BU 3221 HO2S Low Signal Bank 2 Sensor 2 II -
47 0.5 VT / GN 3220 HO2S High Signal Bank 2 Sensor 2 II -
48 - 49 - - - Not Occupied - -
50 0.75 BK / GY 2303 Knock Sensor Low Reference 2 II -
51 0.75 BK / YE 1716 Knock Sensor Low Reference 1 II -
52 0.5 BN / WH 582 Throttle Actuator Close Control II -
53 0.75 GY / WH 3122 HO2S Heater Low Control Bank 1 Sensor 2 II -
54 0.5 VT 5495 Cylinder Deactivation Solenoid Valve Control 5 II -
55 0.5 WH / VT 2495 Cylinder Shutoff Solenoid Enable Signal 5 II -
56 0.5 YE / BU 5494 Cylinder Deactivation Solenoid Valve Control 4 II -
57 0.5 GN 5492 Cylinder Deactivation Solenoid Valve Control 2 II -
58 0.5 WH / GN 2492 Cylinder Shutoff Solenoid Enable Signal 2 II -
59 - 65 - - - Not Occupied - -
66 0.5 WH / YE 3121 HO2S Low Signal Bank 1 Sensor 2 II -
67 0.5 VT / BU 3120 HO2S High Signal Bank 1 Sensor 2 II -
68 - 69 - - - Not Occupied - -
70 0.75 WH / GY 1876 Knock Sensor 2 Signal II -
71 0.75 VT / GY 496 Knock Sensor 1 Signal II -
72 0.5 YE 581 Throttle Actuator Open Control II -
73 2.5 BK / WH 6151 Engine Control Module Ground I -