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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) X5
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Body Control Module (BCM) X5

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Body Control Module (BCM) X5
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) X5 - Connector End View
GM1664500Courtesy of GENERAL MOTORS CORP.
Body Control Module (BCM) X5

Pin Wire Circuit Function
1 1 YE 618 Left Rear Turn Signal Lamp Control
2 1 D-GN 619 Right Rear Turn Signal Lamp Control
3 - - Not Used
4 0.8 L-BU/WH 1314 Left Front Turn Signal Lamp Control
5 0.5 WH 5065 Stop Lamps Control
6 0.35 L-BU/WH 6311 Torque Converter Clutch (TCC) Brake Signal
7 - - Not Used
8 0.5 PK 5076 5-Volt Reference (4.3L/5.3L)
9 0.5 WH 5075 Current Sensor Signal (4.3L/5.3L)
10 0.5 BN 5077 Low Reference (4.3L/5.3L)
11 0.35 YE 43 Ignition Voltage
12 - - Not Used
13 0.35 OG 300 Ignition Voltage
14-15 - - Not Used
16 0.35 L-BU 1134 Park Brake Switch Signal
17 - - Not Used
18 0.35 TN 28 Horn Relay Control
19 - - Not Used
20 0.35 GY 91 Windshield Wiper Switch Signal 2
21 0.35 TN 860 Front Windshield Wiper Switch High Signal
22 - - Not Used
23 0.35 PK/WH 1970 Headlamp Low Beam Relay Control
24 0.35 D-BU 45 Park Lamp Control
25 - - Not Used
Connector Part Information 
  • OEM: 15480179
  • Service: 88988837
  • Description: 25-Way F HIT Series (BN)
Terminal Part Information 
  • Pins: 6, 11, 13, 15, 16, 18-21, 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, 2, 4, 5
  • Terminal/Tray: SNAC-A061T-M2.8/20
  • Core/Insulation Crimp: Pins 1, 2 - C/A
  • Core/Insulation Crimp: Pins 4, 5 - 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.