Trailer Brake Control System: Specifications — Chevrolet Silverado 2500 HD (2002-2012)

Fastener Tightening Specifications

Application	Specification
Application	Metric	English
Trailer Brake Control Module Bolt	9 N.m	80 lb in
Trailer Brake Control Relay Bolt	9 N.m	80 lb in

Fastener Tightening Specifications

Scheme 1: Trailer Brake Control Schematics

Scheme 3: Trailer Brake Control Component Views

Callout	Component Name
1	Driver Information (DIC) Switch
2	Instrument Panel Cluster (IPC)
3	Radio
4	Ambient Light/Sunload Sensor Assembly (CJ2) / Ambient Light Sensor (C67/C42)
5	HVAC Control Module
6	Inflatable Restraint I/P Module Disable Switch (C99)
7	Power Take-Off (PTO) Switch
8	Auxiliary Power Outlet - Front 2
9	I/P Multifunction Switch Assembly
10	Auxiliary Power Outlet - Front 1
11	Transfer Case Shift Control Switch (NQF/NQH)
12	Trailer Brake Control Panel Switch (JL1)
13	Headlamp and Panel Dimmer Switch

Callout	Component Name
1	Instrument Panel Cluster (IPC)
2	Inflatable Restraint Steering Wheel Module
3	Shift Control Lever
4	Ambient Light/Sunload Sensor Assembly (CJ2)/Ambient Light Sensor (C67/C42)
5	Speaker - Center (UQA +Y91)
6	Radio
7	Inflatable Restraint I/P Module
8	I/P Compartment Lamp
9	HVAC Control Module
10	Auxiliary Power Outlet - Front 2
11	I/P Multifunction Switch Assembly
12	Auxiliary Power Outlet - Front 1
13	Driver Information Center (DIC) Switch
14	Steering Wheel Control Switch Assembly - Right (UK3)
15	Steering Wheel Control Switch Assembly - Left (K34/KA9)
16	Trailer Brake Control Panel Switch (JL1)
17	Headlamp and Panel Dimmer Switch
18	Dimmer Control
19	Transfer Case Shift Control Switch (NQF/NQH)
20	Turn Signal Multifunction Switch

Callout	Component Name
1	I/P Trim
2	I/P Cluster Trim
3	Trailer Brake Controller Switch

Callout	Component Name
1	Trailer Connector
2	Trailer Brake Controller Module (TBCM)
3	Trailer Brake Controller Solid State Relay

Scheme 7: Trailer Brake Controller Module (TBCM)

Connector Part Information OEM: 15491307 Service: See Catalog Description: 47-Way F ASG Series (BK)
Terminal Part Information Pins: 1, 32 Terminal/Tray: 15476168/5 Core/Insulation Crimp: F/3 Release Tool/Test Probe: 15315247/J-35616-42 (RD) Pins: 2, 6-9, 10-11, 14-15, 17, 21-22, 25, 28, 33, 37 Terminal/Tray: 7116-3703-02/14 Core/Insulation Crimp: 9/9 Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

Trailer Brake Controller Module (TBCM) Connector Parts Information

Pin	Wire Color	Circuit No.	Function
1	2 BK	1750	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	0.5 YE	7635	Integrated Trailer Brake Controller Manual Apply Signal
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 1 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
26-27			Not Used
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

Trailer Brake Controller Module (TBCM) Connector Terminal Identification

Scheme 8: Trailer Brake Controller Solid State Relay

Connector Part Information OEM: 15326635 Service: 88953154 Description: 6-Way F GT 280 Series (BK)
Terminal Part Information Pins: A-B, F Terminal/Tray: 15304720/19 Core/Insulation Crimp: 4/5 Release Tool/Test Probe: 15315247/J-35616-4A (PU) Pins: C-D, E Terminal/Tray: 15304719/19 Core/Insulation Crimp: E/5 Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Trailer Brake Controller Solid State Relay Connector Parts Information

Pin	Wire Color	Circuit No.	Function
A	3 D-BU	47	Trailer Brake Output Supply Voltage
B	3 BK	1750	Ground
C	0.5 TN	945	Integrated Trailer Brake Relay Control Active Low
D	0.5 L-GN	944	Relay Feedback
E	0.5 YE/BK	7521	Solid State Relay Enable
F	3 RD/BK	242	Battery Positive Voltage

Trailer Brake Controller Solid State Relay Connector Terminal Identification

Scheme 9: Trailer Brake Control Panel Switch

Connector Part Information OEM: 13518475 Service: See Catalog Description: 8-Way F YESC Kaizen Series (BK)
Terminal Part Information Pins: 3-8 Terminal/Tray: 7116-4618-02/14 Core/Insulation Crimp: P/P Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

Trailer Brake Control Panel Switch Connector Parts Information

Pin	Wire Color	Circuit No.	Function
1-2			Not Used
3	0.35 D-BU	7632	5-Volt Reference
4	0.35 YE	7635	Integrated Trailer Brake Controller Manual Apply Signal
5	0.35 BN	7634	Integrated Trailer Brake Controller Redundant Manual Apply Signal
6	0.35 L-GN/BK	7633	Integrated Trailer Brake Controller User Gain Signal
7	0.35 YE	6817	LED Backlight Dimming Control
8	0.35 TN	7631	Ground Return

Trailer Brake Control Panel Switch Connector Terminal Identification