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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN CARGO EXTENDED, 4.8 CREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSCOMPONENT LOCATIONS & COMPONENT CONNECTOR END VIEWSCOMPONENT CONNECTOR END VIEWENGINE CONTROL MODULE (ECM) X2 (4.8L/5.3L/6.0L)
2008 Chevrolet Chevy Express G3500, Van Cargo Extended, 4.8 C

Engine Control Module (ECM) X2 (4.8L/5.3L/6.0L)

2008 Chevrolet Chevy Express G3500, Van Cargo Extended, 4.8 CSECTION Engine Control Module (ECM) X2 (4.8L/5.3L/6.0L)
Fig 1: Engine Control Module (ECM) X2 (4.8L/5.3L/6.0L) Connector End View
GM1830236Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X2 (4.8L/5.3L/6.0L)

Pin Wire Circuit Function
1 - - Not Used
2 0.35 PU/WH 6270 5-Volt Reference
3 0.35 GY 2701 5-Volt Reference
4 - - Not Used
5 0.5 BN 582 Throttle Actuator Control Motor Control - 2
6 0.5 YE 581 Throttle Actuator Control Motor Control - 1
7 - - Not Used
8 0.5 D-GN/WH 428 Evaporative Emission (EVAP) Canister Purge Solenoid Control
9-11 - - Not Used
12 0.8 GY/WH 3113 Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 1 Sensor 1
13 0.8 L-GN 3212 Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 2 Sensor 1
14-15 - - Not Used
16 0.8 PU 5284 Camshaft Phaser Intake Solenoid (1) (LY6)
17 0.5 D-BU/WH 878 Fuel Injector 8 Control
18 0.5 TN/WH 845 Fuel Injector 5 Control
19 0.5 YE/BK 846 Fuel Injector 6 Control
20 0.5 TN 1744 Fuel Injector 1 Control
21 0.5 YE 410 Engine Coolant Temperature (ECT) Sensor Signal
22 0.5 TN 2761 Low Reference
23-25 - - Not Used
26 0.8 D-BU 496 Knock Sensor (KS) 1 Signal
27 0.8 GY 1716 Knock Sensor (KS) 1 Signal
28 - - Not Used
29 0.8 L-BU 1876 Knock Sensor (KS) 2 Signal
30 0.8 GY 2303 Knock Sensor (KS) 2 Signal
31 - - Not Used
32 0.5 GY 23 Generator Field Duty Cycle Signal
33 0.5 BN 1174 Oil Level Switch Signal
34 0.35 BK 2755 Low Reference
35 0.35 TN 2752 Low Reference
36 - - Not Used
37 0.5 L-GN/BK 1745 Fuel Injector 2 Control
38 0.5 PK/BK 1746 Fuel Injector 3 Control
39 0.5 L-BU/BK 844 Fuel Injector 4 Control
40 0.5 OG/BK 877 Fuel Injector 7 Control
41 0.35 GY 2705 5-Volt Reference
42 - - Not Used
43 0.35 GY 2704 5-Volt Reference
44 0.35 D-BU 6259 5-Volt Reference
45-49 - - Not Used
50 0.35 TN/WH 331 Oil Pressure Sensor Signal
51 - - Not Used
52 0.8 TN 2199 Low Reference (LY6)
53 0.35 OG/BK 469 Low Reference
54-55 - - Not Used
56 0.8 TN 1664 Heated Oxygen Sensor (HO2S) Low Signal - Bank 1 Sensor 1
57 0.8 PU/WH 1665 Heated Oxygen Sensor (HO2S) High Signal - Bank 1 Sensor 1
58 0.35 L-GN 432 Manifold Absolute Pressure (MAP) Sensor Signal
59 0.8 PU 1666 Heated Oxygen Sensor (HO2S) High Signal - Bank 2 Sensor 1
60 0.8 TN 1667 Heated Oxygen Sensor (HO2S) Low Signal - Bank 2 Sensor 1
61 0.5 OG 225 Generator Turn On Signal
62 - - Not Used
63 0.35 PU 486 Throttle Position (TP) Sensor 2 Signal
64 0.35 D-BU/WH 6265 Camshaft Position (CMP) Sensor Signal
65 0.35 D-GN 485 Throttle Position (TP) Sensor 1 Signal
66 0.35 BN 6266 Low Reference
67 - - Not Used
68 0.35 WH/BK 6271 Crankshaft Position (CKP) Sensor Signal
69 0.35 GY/BK 6272 Low Reference
70 0.8 PU 2121 Ignition Coil 1 Control
71 0.8 PU/WH 2128 Ignition Coil 8 Control
72 0.8 OG 2127 Ignition Coil 7 Control
73 0.8 OG/WH 2122 Ignition Coil 2 Control
74 0.8 L-BU/WH 2126 Ignition Coil 6 Control
75 0.8 D-GN 2125 Ignition Coil 5 Control
76 0.8 D-GN/WH 2124 Ignition Coil 4 Control
77 0.8 L-BU 2123 Ignition Coil 3 Control
78 0.8 BN 2129 Low Reference
79 0.8 BN/WH 2130 Low Reference
80 - - Not Used
Connector Part Information 
  • OEM: 13511426
  • Service: 19115670
  • Description: 80-Way F MX123 Series (GY)
Terminal Part Information 
  • Pins: 2, 3, 34, 35, 41, 43, 44, 50, 53, 58, 63-66, 68, 69
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 5, 6, 8, 17-22, 32, 33, 37-40, 61, 12, 13, 16, 26, 27, 29, 30, 52, 56, 57, 59, 60, 70-79
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins 5, 6, 8, 17-22, 32, 33, 37-40, 61 - J/J
  • Core/Insulation Crimp: Pins 12, 13, 16, 26, 27, 29, 30, 52, 56, 57, 59, 60, 70-79 - K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
RENDER: 1.0x

NO RELATED

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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
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