i have an 03 w/ 4.3l v6 and the past couple days ive had the driver side flasher in the rear cut in and out. does anyone know a common area that the connections may go bad? no trailer wiring.

Descrine cut in and out?
When it does it is the front and rear turn signal light bright like normal?

when it cuts out the flasher in back doesnt work at all and the one in front blinks real quick so does the signal in thee truck. lights normal and bright.

When it doesn't work check for power at the socket. Sometimes a filament will break and then reconnect when jarred, always a possibility.

The brake and turn signal are on the same circuit in the rear. The turn signal switch is what interrupts the power from the brake switch and allows power from the flasher to go to the rear bulb. It is entirely possible for the turn signal switch to also cause this.

And do not forget grounds.

looked over the rear assembly today and everything looks good and it hasnt given me any problems today after i did it. and the bulbs still good

looked over the rear assembly today and everything looks good and it hasnt given me any problems today after i did it. and the bulbs still good

If it does it again find out if front or rear signal lights are droping out and work on that end.
Bad bulbs and bulb sockets and wiring and grounds are things to check and even turn signal switch.
But you need to catch it when it is doing it.
Good Luck

i fixed it it was a bad bulb where the element was just touching

Good find and fix.
And thanks for posting back fix.
To help other people tell us how you found it?
Good Luck

i had a friend with an s10 that said he had same problem but caused by bad fuse so i checked all the fuses related to any lighting and those were all good so i fliped the right and left side bulbs and it worked so went out and got new ones

i had a friend with an s10 that said he had same problem but caused by bad fuse so i checked all the fuses related to any lighting and those were all good so i fliped the right and left side bulbs and it worked so went out and got new ones

Good find and thanks for posting back what it was and fix.