How to Install a Trailer Brake Controller on a 2008 Chevy TrailBlazer

Question

Question:

I did not see a video for this exact year of Trailblazer but by the looks of the vid for the 2006 it looks like the same procedure. Is it? if so, is that is all that is needed or is there something under the hood that needed to be done as well. My truck does have the factory tow package already installed.

asked by: Mark

0

Expert Reply:

Your 2008 Chevy Trailblazer will have the factory wiring to connect a brake controller under the dash, to the left of the steering wheel, held together with a white tag. The tag should list the functions for the wires.

It should be as follows:
GM red/black to brake controller black for 12 volt power
GM white to controller white for ground
GM light blue/white to controller red for input from brake switch
GM dark blue to controller blue for output to trailer brakes
GM orange not used

There may be some connections that you will need to make under the hood to make everything fully functional. I have included a link to the right to a help article that explains this. The video you mentioned, which I have also linked, will be basically identical for your 2008.

expert reply by: Michael H

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Answer 1

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 2

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 3

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 4

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 5

The three most common lug stud sizes for a trailer are 1/2"-20, 9/16"-18, and 5/8"-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for…

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Answer 6

The best brake controller option to go with is one that activates the brakes proportionally instead of time delayed. A proportional brake controller will activate the trailer brakes at the same time and with the same intensity as the tow vehicle…

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Answer 7

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

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Answer 8

The trailer brakes work on a separate circuit than the lights. You have a couple of options to control the electric brakes on the trailer. One option is to use an air over electric brake control, #HA100400C. This unit connects to the air brakes on…

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Answer 9

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Answer 10

The first thing you will need for your 1999 D250 is a 4-way. The Curt T-Connector Vehicle Wiring Harness #C55317 plugs into the connection points behind your rear bumper and will allow you to power your trailer's signal lights. Once the 4-way is…

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Answer 11

There is only one difference between the Curt Trailer Hitch Receiver #C13176 and etrailer Trailer Hitch Receiver #e98909 that fit your 2020 Chevrolet Colorado, which is the finish. The Curt trailer hitch has a glossy black finish while the etrailer…

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How to Install a Trailer Brake Controller on a 2008 Chevy TrailBlazer

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