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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1860 (WIRING SYSTEMS AND POWER MANAGEMENT - ELECTRICAL CENTER IDENTIFICATION, COMPONENT CONNECTOR & SPLICE PACK CONNECTOR END VIEWS)COMPONENT CONNECTOR END VIEWSBODY CONTROL MODULE (BCM) X4
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Body Control Module (BCM) X4

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Body Control Module (BCM) X4
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Body Control Module (BCM) X4 - Connector End View
GM1664499Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X4

Pin Wire Circuit Function
1 0.8 RD/WH 2740 Battery Positive Voltage
2 0.8 RD/WH 3040 Battery Positive Voltage
3 0.8 RD/WH 2940 Battery Positive Voltage
4 0.8 RD/WH 2240 Battery Positive Voltage
5 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Control
6 0.35 D-GN 6134 Local Interconnect Network 3
7 0.35 YE 196 Windshield Wiper Motor Park Switch Signal
8 - - Not Used
9 0.5 BK/WH 451 Ground (4.3L/5.3L)
10 0.5 RD/WH 2840 Battery Positive Voltage (4.3L/5.3L)
11 0.5 L-GN 1391 Ignition Voltage (PRP)
12 0.35 YE 5187 Right Trailer Turn Signal Lamp (UY7)
13 0.35 OG 5186 Left Trailer Turn Signal Lamp (UY7)
14 - - Not Used
15 0.35 OG 2268 Windshield Washer Relay Control
16 0.35 TN/WH 1969 Headlamp High Beam Relay Control
17-18 - - Not Used
19 0.5 D-BU 5985 Accessory Wakeup Serial Data
20 0.5 L-BU 1344 Trunk Release Control (PRP)
21 0.35 YE 5199 Run/Crank Relay Coil Control
22 - - Not Used
23 0.35 PU 544 Headlamp Low Beam Control
24 0.5 L-BU 244 Front Passenger Door Lock Switch Lock Control (PRP)
25 - - Not Used
Connector Part Information 
  • OEM: 15482792
  • Service: 88988841
  • Description: 25-Way F HIT Series (BK)
Terminal Part Information 
  • Pins: 6, 7, 11-13, 15-17, 19-21, 23, 24
  • Terminal/Tray: SNAC3-A021T-M0.64/20
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: 15315247/J-35616-64B (L-BU)
  • Pins: 1-5
  • Terminal/Tray: SNAC-A061T-M2.8/20
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
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.