Installing a Brake Controller on a 2007 Chevy Avalanche With or Without a Factory Tow Package

Question

Question:

Some have the harness plug and some do not ?

asked by: Gene V

0

Expert Reply:

Yes, that is correct. Some model 2007 Chevy Avalanches have what is called a factory tow package that comes with a 7-Way connection at the rear of the vehicle, and/or wiring already ran under the dash for a brake controller. Some models do not have this factory tow package. You will be able to tell if you have a functioning 7-Way trailer plug at the rear of the vehicle.

No matter which system you have, installation of a brake controller will be fairly simple on your vehicle. Even without a factory tow package, the wires will already be there to hardwire the brake controller to the vehicle. Chances are, they are up under the dash, to the left of the brake pedal, held together with white tape. For a brake controller, I recommend the Tekonsha P2 Brake Controller, # 90885. It is one of our most popular and highest rated brake controllers. I have included the installation details linked below.

You will have to test the wires for function with a circuit tester, like the Quickee # 3808. Using the circuit tester, find the wire with a signal only when the brake pedal is pressed. Attach this wire to the red wire on the brake controller. Next, find the wire that has a constant 12 volt signal. Attach this wire to the black wire on the brake controller. The white wire on the brake controller on the ground. Chevy usually has a black ground wire, but test it first, and if it has any positive signal, it is not the ground. The last wire is for the trailer brakes. It is usually a dark blue wire on a Chevy. This wire attaches to the blue wire on the brake controller. If you have a factory tow package, you are done. If not, there is just one more step.

Next, you will need Replacement Multi-Tow 7-Way and 4-Way Trailer Connectors, # 30955, if you do not have a factory tow package. This is a pretty simple install. Again, the connections are there, you will just have to plug in and mount the harness. I have included a video below that shows this on a similar vehicle.

expert reply by: Michael H

0

Buck

10/27/2024

Hi I have a 2007 Chevy avalanche ltz it has a GM 7 point at reAr but there are no wires under the dash. Can you help ?

Reply

Bryce D.

10/28/2024

@Buck If you have the factory brake controller then the wires are there, they just might be bundled up in a wire loom. What you're going to need to do is test the wires under the dash to see what wires what are. There should be a red/black, a white, a blue/white, and a red wire that you'll need to locate.

Helpful Links

faq-tb-0007-2007-2009-gm-full-size-truck-brake-control.aspx

Reply

Answer 1

Your Draw-Tite #5100 would connect to the tow package wiring of your Avalanche as follows: controller red wire to light blue tow package wire controller black wire to red and black tow package wire controller dark blue wire to dark blue tow package…

view full answer...

Answer 2

Since you have the Hopkins Insight Brake Controller, I confirmed with Hopkins that the red light staying on is completely normal. I also confirmed with Hopkins that the red light will not drain your 2010 Ford F-250's battery to the point where…

view full answer...

Answer 3

The red light on the manual override of the Hopkins Agility will stay on all the time. But the amperage draw is so low that it would not drain your battery. A guy that works here has one installed on his truck and has had zero problems. He's had…

view full answer...

Answer 4

I included a link to the suspension enhancement that fits the 2001 Dodge Ram but #TDR1500DQ is not a fit. The equivalent that will fit is #TDR1525H4. This kit has brackets that install to the bottom of the frame rails directly above the axle. Take a…

view full answer...

Answer 5

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

view full answer...

Answer 6

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…

view full answer...

Answer 7

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…

view full answer...

Answer 8

Yes, it does John. So long as you have the Ford Performance Heavy Duty Modular Front Bumper with the tow hooks, the easiest way to flat tow it is to use the Curt Custom Base Plate Kit item #C59JR. This adapter connects right to the tow hooks without…

view full answer...

Answer 9

To tow your trailer that uses an RV style 7-way blade style connector with your semi that has a 7-pin connector, you need to construct an adapter that will also combine the brake signal into the right and left directional signal pins. This can be…

view full answer...

Answer 10

If your vehicle has a factory brake controller plug, you can simply use the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers – Ford, Item #3034-P, which will connect to the vehicle plug and the brake controller. On the new E-450…

view full answer...

Answer 11

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…

view full answer...