1991 oldsmobile 98 turn signal problem i cant signal left or right

Check out the link

https://www.google.com/search?q=1988+Oldsmobile+98+wiring+diagram

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you cant. remove the two pins or two bolts at the top of light and pull the whole light out. then replace bulb

Sounds like you have a bad flasher relay.

under the dash

What you speak of as to the left blinker doesn't flash, yet the instrument cluster shows the green arrow (to the left), and yet that and the left turn signal lights do not flash, appears to be a simple burned out bulb. If one of your left turn signal bulbs are burnt out, then the #552 Flasher Unit in your fuse box is NOT the cause. It's the "Amperage" not being correct to the flasher unit. Place the parking brake on and start your vehicle. Put the left turn signal on and check to see ALL the bulbs are illuminated for the left turn signal. If you find one bulb that is not illuminated, then replace the bulb. It should be an 1157 bulb, but in the front it could be a 1157 Amber bulb dependent on whether your turn signal lens is clear or yellow.

If you still have difficulty finding the dead bulb, turn on the right turn signal and see which bulbs are illuminated and this will give you an idea as to which bulb on the left side isn't working, or turn on your Emergency Flashers which will turn on both the left and right side lamps and see which bulb is not lit up.

I hope this Helps,

~00 Buck~

"Still living on the Right Side of Dirt..."

you need to replace the flasher unit

Change the flasher which is located up by fuse block under dash

replace blower control module

my fuel filter is located right behind the pass side tire on the inner side of the frame.

Ball joint, tie rod end or upper strut bearing. CV joints? Pulling to the left may be an alignment problem with front or rear tires. Get a four wheel alignment.