Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2008 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 KFACTORY OEM SERVICE PROCEDURE

Electronic Brake Control Module (EBCM) (JL4)

Fig 1: Electronic Brake Control Module (EBCM) (JL4) - Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	5 BK	2150	Ground
2	0.5 WH	883	Low Reference
3	0.5 BN	882	Right Rear Wheel Speed Sensor Signal
4	0.5 TN	884	Left Rear Wheel Speed Sensor Signal
5	0.5 OG	885	Low Reference
6	0.5 TN	833	Low Reference
7	0.5 YE	6046	Steering Angle Sensor Phase A
8	0.5 TN	6048	Steering Angle Sensor Phase C
9	0.5 L-GN	6043	Steering Angle Sensor Signal
10-11	-	-	Not Used
12	0.5 L-BU	5986	Serial Data Communication Enable
13	5 RD/BK	442	Battery Positive Voltage
14-15	-	-	Not Used
16	0.5 OG/BK	6045	Low Reference
17	0.5 D-GN	872	Right Front Wheel Speed Sensor Signal
18	-	-	Not Used
19	0.5 GY/BK	1337	12-Volt Reference
20	0.5 D-BU	6047	Steering Angle Sensor Phase B
21	0.5 WH/BK	6436	CAN Bus Low Terminated Serial Data
22	-	-	Not Used
23	0.5 TN	2501	High Speed GMLAN Serial Data Bus (-)
24	0.5 TN	2501	High Speed GMLAN Serial Data Bus (-)
25	3 BK	2150	Ground
26-27	-	-	Not Used
28	0.5 L-BU	830	Left Front Wheel Speed Sensor Signal
29	0.5 YE	873	Low Reference
30	0.5 BK/PU	7499	Low Reference
31	0.5 GY	6044	5-Volt Reference
32	0.5 YE/BK	1827	Vehicle Speed Signal
33	0.5 BN/WH	6437	CAN Bus High Terminated Serial Data
34-35	-	-	Not Used
36	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus (+)
37	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus (+)
38	3 RD/WH	1640	Battery Positive Voltage

Connector Part Information

OEM: 13528146
Service: See Catalog
Description: 38-Way F Sealed ()

Terminal Part Information

Pins: 1, 13
Terminal/Tray: 7116-4142-02/10
Core/Insulation Crimp: D/3
Release Tool/Test Probe: 12094430/J-35616-42 (RD)

Pins: 2-9, 12, 16, 17, 19, 20-24, 28-33, 36, 37
Terminal/Tray: 7116-3703-02
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit

Pins: 25, 38
Terminal/Tray: 15304720/19
Core/Insulation Crimp: 4/5
Release Tool/Test Probe: 15315247/J-35616-4A (PU)

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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