Brake/turning signal

Hello and welcome to 2CarPros.
The only fuse panel is the TIPM under the hood where you found the others. It is the main electrical controller for the entire van. The problem is that if it turns out that the failure isn't a bad connection at the tail light or a bad wire the entire TIPM has to be replaced to repair the problem. They are not a cheap part.
So the first thing I would suggest is to remove the offending lamp and get a test light to do some tests.
You should see three wires, White with Violet stripe, White with yellow stripe and a black with yellow stripe or just Black depending on options.
The black with yellow is the ground for the lamp.
The white with yellow stripe is the turn and brake filament power.
The white with violet is the marker lamp power.

With the lights on and the test lamp connected to a good ground you should have battery voltage on the White w violet.
With the lights off and someone stepping on the brake or the turn signal on, there should be power on the White w yellow wire.
If both of those test okay then the ground wire may be corroded or broken. It connects to the base of the pillar with a screw. They can rust off or corrode. The easy way to test that would be to turn on the lights, connect the test light to the ground wire and the White w violet power feed. If it doesn't light it's a bad ground.

If the wires all check out then it may be a failed socket. They can corrode inside the rubber.

Now if the wires do not check out, you will need to go to the TIPM and verify that the fuses are good. The test light is good for this. Just hook one side to the battery negative and turn on the key. Then touch the light to each of the tabs sticking up on the fuses. A good fuse should light on both sides of the fuse. If the fuses all check good but still no light then you can test those same wires at the TIPM or unfortunately replace it.