Which Fuse Provides 12-Volts to 7-Way Connector on 2009 Chevy Silverado 3500 Diesel

Question

Question:

Which fuse control the 12v power on the 7 way plug on a 2009 3500hd Chevy diesel

asked by: Tony

1

Helpful Expert Reply:

If the 12-volt pin on your trailer connector isn't working, you've got a missing or blown fuse or the wiring connection at the fuse box under the hood wasn't finalized.

You're looking for a 40 amp fuse, located in position # 68 in the fuse box under the hood. The fuse protects one of the nearby power studs on the side of the fuse box, which is where the wire that provides power to the 7-way should be connected. If it's not, you can find the wire bundled up under the master cylinder (see photo). Simply uncoil the wire and attach it to the right hand stud on the fuse box.

expert reply by: Mike L

1

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Jim W.

2/28/2020

I have a 2008 gmc 2500hd diesel..my 7 way charge wire is dead..the wires under hood on the front of the fuse box are hot..all other circuits are working..will I have to run a new wire?

Reply

Chris R.

2/29/2020

If all your fuses are good (you can check your owner's manual for the 12V trailer charge fuse location) and wire connections under the hood are made then your best option would be just to run a new hot lead. This allows you to bypass the factory wiring which can be frustrating to troubleshoot and likely expensive to repair. Just run some 10 gauge wiring through a breaker from the positive post of the Sierra's battery to the 12V pin on the 7-Way and it'll be good as new.

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Answer 1

On GM vehicles of that vintage, the 12-V pin should be hot regardless of whether the ignition is on or not. If it isn't showing voltage even with the ignition on, you're almost certainly on the right track thinking it's a blown or…

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Answer 2

If your 2019 Chevy Express Van 3500 has the tow package there will be a round connector taped behind the rear bumper that a 7-way like the part #A10-7072VP could attach to. Otherwise you'd need to install a 4-way first like the part #118392.

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Answer 3

On the 2009 Chevy Silverado there is no port to plug in a brake controller. Instead GM put a tow package wire bundle under the dash. You would use the harness with the blunt cut wires that comes with the brake controller and splice into the tow…

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Answer 4

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…

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Answer 5

If the vehicle has the factory installed integrated trailer brake controller (ITBC), the tow package wiring that exists under the dash is used to install an aftermarket controller. The wiring is located under the dash, above where the driver's…

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Answer 6

To install the Tekonsha Prodigy P3 Electric Brake Controller #90195 into your 2014 Chevrolet Express the black wire from the controller will go to 12 volt power, the blue wire runs back to your 7-way trailer connector at the rear of your van, the…

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Answer 7

I would first test the 12 volt wire hooked up to the RV-Style Trailer Connector, #PK11916, to see if the wire itself is carrying power. If it is, then there is something wrong inside the connector such as a loose connection or its wired to the wrong…

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Answer 8

You cannot use a weight distribution system with a pintle hitch. You would need to remove the pintle hitch you have now in order to use a weight distribution system. Once you do this, I recommend using the Equal-i-zer Weight Distribution System which…

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Answer 9

Sometimes the fuses are already installed from the factory, but if not the fuse slots are in the front of the box. I have attached a picture that shows the location of fuse slots. I have also linked a video installation of a brake controller on a…

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Answer 10

On a factory 7-Way connector the 12 volt hot wire should be the terminal at the 1 oclock position, looking at the front of the connector. If you test that terminal with a circuit tester and have no power you will want to check under the hood of your…

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Answer 11

If the integrated brake controller on your 2008 Chevy Silverado 2500 is not recognizing when a trailer is connected, then that could indicate damage to the brake output wire or the connector on the truck itself. It could also be the trailer. To…

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Answer 12

The trailer running light fuse of your 2018 Chevy Silverado is in the number 15 slot of the fuse box under the hood of your truck. I attached a picture with the location pointed out.

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Which Fuse Provides 12-Volts to 7-Way Connector on 2009 Chevy Silverado 3500 Diesel

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