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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 941 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L (LMM) - INTRODUCTION (2 OF 2))COMPONENT LOCATORENGINE CONTROL MODULE CONNECTORSENGINE CONTROL MODULE (ECM) - C2
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Engine Control Module (ECM) - C2

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Engine Control Module (ECM) - C2
WARNING: This page is about a different car, the 2007 GMC Savana Special, 2007 GMC Savana Camper Special, 2007 GMC Savana, and 2007 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) - C2 Connector End View
GM1544260Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) - C2 Connector & Terminal Parts Information

Connector Part Information 
  • OEM: 15462694
  • Service: 88988935
  • Description: 58-Way F Mixed Series, Sealed (BK)
Terminal Part Information 
  • Pins: 1-6
  • Terminal/Tray: 1928498059/24
  • Core/Insulation Crimp: C/5
  • Release Tool/Test Probe: J-38125-561/J-35616- 4A (PU)
  • Pins: 7, 26, 28
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Pins: 9, 12, 15-17, 19, 21-25, 29, 30-34, 36, 38-41, 44-49, 54, 56, 57
  • Terminal/Tray: 1928498135/19
  • Core/Insulation Crimp: Pins 9, 12, 15-17, 19, 22, 25, 29-34, 36, 39-41, 44-49, 54, 56, 57 - P/P
  • Core/Insulation Crimp: Pins 21-24, 38 - See Terminal Repair Kit
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) - C2 Terminal Identification

Pin Wire Color Circuit No. Function
1 RD/WH 740 Ignition 1 Voltage
2 BK/WH 1551 Ground
3 RD/WH 740 Ignition 1 Voltage
4 BK/WH 1551 Ground
5 RD/WH 740 Ignition 1 Voltage
6 BK/WH 1551 Ground
7 BN 582 AI Motor Control 2
8 - - Not Used
9 D-GN 1049 Class 2 Serial Data
10-11 - - Not Used
12 TN 1465 Fuel Pump Relay Control
13-14 - - Not Used
15 WH/BK 1164 5-Volt Reference 3
16 D-BU 507 Wait to Start Indicator Control
17 OG 2013 High Idle Indicator Control
18 - - Not Used
19 YE 5991 ECM Relay Control
20 YE 581 AI Motor Control 1
21 PK 439 Ignition 1 Voltage
22 PU 420 TCC Brake Switch/Cruise Control Release Signal
23 OG 225 Generator Turn On Signal
24 BN/WH 7076 Charge Indicator Control (KD9/YF2)
25 D-GN 603 A/C Low Pressure Switch Signal (C60)
26-28 - - Not Used
29 BN 1271 Low Reference
30 BN/WH 419 MIL Control
31 D-GN/WH 459 A/C Compressor Clutch Relay Control (C60)
32 YE/BK 625 Starter Enable Relay Control
33 OG/BK 5764 EGR Motor High Control
34 TN 2759 Low Reference
35 - - Not Used
36 PU 1589 Fuel Level Sensor Signal
37 - - Not Used
38 GY 23 Generator Field Duty Cycle Signal
39 OG/BK 1786 Park/Neutral Signal
40 L-BU 1320 Stop Lamp Switch Signal (Cutaway) or CHMSL Supply Voltage/Stop Lamp Supply Voltage
41 D-BU 6863 Low Reference
42-43 - - Not Used
44 TN 2501 High Speed GMLAN Serial Data Bus (-)
45 L-BU 2221 Signal High - Rear
46 L-GN/BK 5746 EGR Motor Low Control
47 BN 6062 Low Reference
48 YE 1578 Fuel Temperature Sensor Signal
49 D-BU 1161 APP Sensor 1 Signal
50-53 - - Not Used
54 YE/BK 1827 Vehicle Speed Signal
55 - - Not Used
56 PK 1020 Ignition 0 Voltage
57 TN/BK 2500 High Speed GMLAN Serial Data Bus (+)
58 - - 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.