Trailer Brake Control Module (20 Series with JL1)

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Connector Part Information Harness Type: Chassis OEM Connector: 15491307 Service Connector: 89047377 Description: 47-Way F ASG Sealed, Series (BK)

Terminal Part Information Pins: 1, 32 Terminated Lead: 13327187 Release Tool: J-38125-553 Diagnostic Test Probe: J-35616-42 (RD) Terminal/Tray: 15476168/5 Core/Insulation Crimp: F/3 Pins: 2, 6-9, 11, 14, 15, 17, 21, 22, 25, 27, 28, 33, 37 Terminated Lead: 13578814 Release Tool: J-38125-215A Diagnostic Test Probe: J-35616-64B (L-BU) Terminal/Tray: SAITS-A03T-M064/14 Core/Insulation Crimp: 9/9

Trailer Brake Control Module (20 Series with JL1)

Pin	Wire	Circuit	Function
1	2 BK	2150	Ground
2	0.5 D-BU	7632	5-Volt Reference
3-5	-	-	Not Used
6	0.5 TN	2501	High Speed GMLAN Serial Data Bus-
7	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus+
8	0.5 TN	7631	Low Reference
9	0.5 L-GN	944	Relay Feedback
10	-	-	Not Used
11	0.5 L-GN/BK	7633	Integrated Trailer Brake Controller User Gain Signal
12-13	-	-	Not Used
14	0.5 TN	945	Integrated Trailer Brake Relay Control Active Low
15	0.5 PK	239	Ignition Voltage
16	-	-	Not Used
17	0.5 L-BU	5986	Serial Data Communication Enable
18-20	-	-	Not Used
21	0.5 TN	2501	High Speed GMLAN Serial Data Bus-
22	0.5 TN/BK	2500	High Speed GMLAN Serial Data Bus+
23-24	-	-	Not Used
25	0.5 BN	7634	Integrated Trailer Brake Controller Redundant Manual Apply Signal
26	-	-	Not Used
27	0.5 YE	7635	Integrated Trailer Brake Controller Manual Apply Signal
28	0.5 D-BU	47	Solid State Relay Feedback
29-31	-	-	Not Used
32	2 RD/WH	4340	Battery Positive Voltage
33	0.5 YE/BK	7521	Solid State Relay Enable
34-36	-	-	Not Used
37	0.5 L-BU/WH	6311	TCC Brake Signal
38-47	-	-	Not Used