Troubleshooting Service Trailer System on Chevy Silverado Dash Message

Question

Question:

2015 Chevy Silverado telling me to service the trailer system

asked by: Raylene J

0

Expert Reply:

Here's what I was able to find for error messages similar to what you listed for a Chevy Silverado:

SERVICE TRAILER BRAKE SYSTEM: This message will display when there is a problem with the ITBC system. If this message continues over multiple ignition cycles, there is a problem with the ITBC system. Have the vehicle serviced.

If either the CHECK TRAILER WIRING or SERVICE TRAILER BRAKE SYSTEM message displays while driving, the ITBC system may not be fully functional or may not function at all. When traffic conditions allow, carefully pull the vehicle over to the side of the road and turn the ignition off. Check the wiring connection to the trailer and turn the ignition back on. If either of these messages continues, either the vehicle or trailer needs service.

expert reply by: Jameson C

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Answer 1

Have you tested the brake controller output on the 2025 Silverado's 7-way and confirmed that it's sending power back to the trailer when the manual override is being activated? When you say the brakes aren't activating as they should do…

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Answer 2

Yes, a module like the Hydrastar Electric Over Hydraulic Actuator Adapter Module #HBA-CAM is going to be needed on a 2024 Chevrolet with factory brake controller. I have seen issues already reported of the factory brake not working on an electric…

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Answer 3

Hey Lyman, thanks for reaching out! Your dealer should be installing a full 7-Way on your 2025 Silverado 1500, but you'll need to ask them if the brake controller harness will be present under the dash. The 2025 model year is still new enough…

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Answer 4

To add a brake controller to your 2022 Chevy Silverado 3500 you are going to want the Redarc Tow-Pro Elite Brake Controller item #RED63RR. This brake controller has a unique installation method where you can mount the control knob on your dash or…

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Answer 5

Thanks for all of the details, Stu! The Diamond C trailers use Hydrastar electric-over-hydraulic actuators which means the OEM brake controller on your 2024 Chevy Silverado 3500 SHOULD work just fine with it. I say "should" because…

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Answer 6

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 9

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 10

To install a Redarc Tow Pro Liberty in your 2023 Toyota Tacoma Sport you will need the following parts: Redarc Tow-Pro Liberty Brake Controller item #RED24FR Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers item #RED99FR…

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Answer 11

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 12

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Troubleshooting Service Trailer System on Chevy Silverado Dash Message

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