I have a1993 Geo Storm, 1.6L engine, having problem getting the bolt on the crankshaft pulley loose. Is it a left hand thread or a right hand thread.

This will be a dealer specific part

It should be left hand thread, loosens when turned anti clockwise

right thread but the torque its 600 psi and need special tool to remove

There's nothing mentioned in the repair section that the bolt is not standard right hand thread. You could check with a GM dealer to make sure.

It is a normal right hand thread.

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

it is a regular thread but you almost need an impact wrench to remove bacause they put them on tight at the factory

TURN CRANKSHAFT BOLT COUNTERCLOCKWISE TO LOOSEN. YOU HAVE RIGHT HAND THREADS.ENGINE TURNING CLOCKWISE.YOU NEED A STRAP WRENCH HOLD CRANKSHAFT PULLEY WHILE LOOSEN IT.BUT YOU NEED A CRANKSHAFT DAMPER REMOVAL TOOL.OR HARMONIC BALANCER REMOVAL TOOL.YOU NEED STRAP WRENCH TO HOLD CRANKSHAFT PULLEY WHEN TIGHTEN IT.TORQUE CRANKSHAFT PULLEY BOLT 90 - 98 FT LBS. MAKE JOB EASIER.HAVE A HELPER HOLD STRAP WRENCH WHEN YOU LOOSEN OR TIGHTEN CRANKSHAFT PULLEY.

remove the outer small bolts to remove balancer(pulley) the big centre bolt holds crankshaft gear for timming belt which slides off with timming belt removed.

u turn counter clockwise to loosen, but you MUST USE a good quality air impact gun to get it loose.

The bolt in the middle is usually counterclockwise. Standard thread removal.