Replaced heater core stop turn and hazard lights all stopped working!! ??? what should i look at fuses all good!

Question edited for clarity.
Question moved to sub category.

check fuse Stop/Haz Haz. Flasher, Seat Belt Buzzer, Stop Lmps., A.B.S. Memory and the flasher itself.
https://www.google.com/search?q=1992+chevy+suburban+hazard+flasher+location

Fuse Box Diagram Chevrolet Suburban (GMT400; 1993 ...

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Fuse box diagram (location and assignment of electrical fuses and relays) for Chevrolet (Chevy) Suburban (GMT400; 1993, 1994, 1995, 1996, 1997, 1998, 1999)

Bad flasher relay or blown fuse. Does hazards work if not and fuse is good than flasher relay is bad

Which fuse did you replace ? The one in the under hood fuse box or one of the two in the I/P fuse box . Do the CHMSL - center high mount stop lamps work correctly ? Here is a description how they work .
Stop Lamps
The STOP LP 25 A fuse in the underhood fuse block supplies battery positive voltage to the normally open stop lamp switch. When the driver presses the brake pedal, the switch contacts close and battery positive voltage is supplied to both the STOP 15 A fuse and the CHMSL 10 A fuse in the I/P fuse block, and to the turn signal/hazard module. The turn signal/hazard module then supplies voltage to both of the trailer rear turn/stop lamp supply voltage circuits. The voltage from the CHMSL 10 A fuse is to the center high mounted stop lamp (CHMSL) and the trailer jumper harness. The voltage from the STOP 15 A fuse is to the stop lamps, throttle actuator control (TAC) module, and the cruise control.
Does yours have trailer light hook up ? If so check trailer wiring connector for corrosion . Also check the turn signal / hazard module .
Does

Diagnose Turn Signal Problems eHow

I would check for a broken ground strap some where

Check your wire harness in the trunk. May have to be replaced. May just be a bad connection. Hope its the latter

Hi!!!

If your hazard lights turn on but do not blink, replace flasher.

If your hazard lights don't turn on, check hazard/stop/turn fuse(s).

Let me know how it worked out, good luck.

check the fuse for the hazard light and turn light. also check the bulbs for all light make sure they are good

If both your hazard flashers and turn indicators are not working, replace your Flasher Module,
If turn indicators only are not working replace turn indicator switch
The heater is probably a seized blower motor if fan is out, if there is heat and no air flow. If no heat check thermostat.
Good Luck on your repairs. If there anymore I can do ask.

i bet you have a bad multi function switch or turn sig switch. good luck