2004 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE

Body Control Module C1

WARNING: This page is about a different car, the 2007 Saturn Sky. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Body Control Module C1 Connector End View
GM1376257Courtesy of GENERAL MOTORS CORP.
Body Control Module C1 Connector Part Information

Connector Part Information 
  • OEM: 15393122
  • Service: 88987847
  • Description: 72-Way F Micro-64 Unsealed (GY)
Terminal Part Information 
  • Pins:
  • Terminal: TBD
  • Core/Insulation Crimp: TBD
  • Release Tool/Test Probe: TBD
Body Control Module C1 Connector Terminal Identification

Pin Wire Color Circuit No. Function
1-7 - - Not Used
8 WH 1080 Park Lamp Relay Control
9-12 - - Not Used
13 PK 849 Brake Fluid Level Sensor Signal
14 L-BU 1134 Park Brake Switch Signal
15 YE 5199 Run/Crank Relay Coil Control
16 WH 193 Rear Defog Relay Control
17 D-BU 15 Right Turn Signal Lamps Supply Voltage
18 - - Not Used
19 TN/WH 746 Right Front Door Ajar Switch Signal
20-21 - - Not Used
22 GY/BK 745 Left Front Door Ajar Switch Signal
23-25 - - Not Used
26 L-GN 1478 Coolant Level Switch Signal
27-30 - - Not Used
31 L-BU 20 Stop Lamp Supply Voltage
32 - - Not Used
33 D-GN/WH 1135 A/T Shift Lock Control Solenoid Supply Voltage
34 - - Not Used
35 L-BU 14 Left Turn Signal Lamps Supply Voltage
36-43 - - Not Used
44 TN/WH 1969 Headlamp High Beam Relay Control
45-46 - - Not Used
47 YE 196 Windshield Wiper Motor Park Switch Signal
48-50 - - Not Used
51 D-GN 113 Windshield Wiper Switch Signal 2
52 - - Not Used
53 L-BU 20 Stop Lamp Supply Voltage
54 YE 317 Fog Lamp Relay Control
55 OG/BK 744 Rear Compartment Lid Ajar Switch Signal
56 OG/BK 737 Rear Compartment Lamp Control
57 BN 253 Trunk Release Relay Control
58 D-BU 38 Backup Lamp Relay Control (M82)
59 - - Not Used
60 TN 28 Horn Relay Control
61 BK/WH 651 Ground
62-72 - - Not Used
Factory Service Tools

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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.

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