Hazard lights work, but no turn signals not even on dash also no brake lighs but the brake light in rear window does work ive checked the turn signal switch,fuses,flasher relay and all are working. i pulled out the turn signal switch and tested it and it is fine

Brake lights /rear hazard lights not working - Ford Truck ...

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Jul 9, 2010 - After checking the brake lights I tried the emergency flashers and found that they are working in the front but not in the back. I do have rear turn ... 1995 F350 Brake Lights / Turn Signals not working
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it all points to a fault with a common ground. Find earthing points

I can almost 100% guaranty the turn signal switch is the problem. Power for the brake lights starts at the brake switch. power then splits from there and the third brake light gets power directly from the brake switch. Since the turn signal and the brake lights are on the same bulb power for the brake lights is routed through the turn signal switch. the switch depending on what position it is in will allow brake power or turn signal power to there respective left or right brake/turn bulbs.

If you hold your foot on the brake pedal and wiggle the turn signal and or play with the hazard switch the brake lights will almost always intermittently start to work. this will confirm a bad turn signal switch which is pretty common on GM vehicle with this style setup.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

The turn signal and brake lights are controlled by the turn signal switch.
You did not mention parking lights so I will assume they work.

Could be a faulty turn signal switch or a wiring problem between the dash and the rear of the van.
Do the hazard flashers work on all four corners ?

replace your flasher, it controls both turn signal, flashers also brake circuit runs througth.

You have a faulty turn signal switch.You can check it by pushing down on the brake pedal and holding it while pushing on the hazard switch.If the brake lighs come on then replace the turn signal switch.

did you change the flasher relay ? it controls the flashers and the hazard

check and replace the multifunction switch

probably needs a turn signal switch

The problem is the turn signal/headlight/hazard switch assembly on the steering column which the brake light wiring runs through. The part is easy to change and cost about $50 at most parts stores