2008 ve, left hand blinkers don't flash & the inside lamp flashers very flast

Check it by using your hazard lights. If they flash, the relay is OK and you have a woring issue.

Only the bulb is linked with those seperate items the bulb runs both blinker and hazard normally one goes both go when u have tufrn signal on inside if u hear it flashing fast its ur bulb

https://s1.postimg.org/1pdri1itjj/turn_signal.jpg

Click on the link.
Did you check voltage and ground anywhere? Are you saying you changed the combination flasher? What about the multifunction switch?
At the combination flasher see terminal one, battery voltage, something to check.
See terminal 2, that is for left front turn signal, With combination flasher unplugged, if you use a jumper wire connected to battery voltage, touch terminal number two cavity, the left front lamp should turn on, probably won't flash. You might ought to use an inline fuse, just in case.
The combination flasher senses what the multifunction switch is doing.

Replace the bulb for the blinker that is not flashing. The majority of flashers will blink fast if one bulb is burned out.

There is only one blinker '. If it works for a left turn there is something else wrong. Check the lamps and sockets. Could be a broken wire.
Turn on the emergency flashers and walk around the car to look at all of the lights that should flash.

(work?, dead, flash too fast, stuck on? or are dim?)
fuse blown above left knee.
the schematic is here.
http://www.fixkick.com/ECU/89/1990-scan-ECU/89_elect3a.jpg

the lost panel cover?
http://www.fixkick.com/ECU/89/Fuse-with-diag.jpg

fuse, then wiggle the hanzard switch 5 times.? cycle it
they get dirty, in 24yrs. then the blinker relay model
and last the combo switch bad.

watch out for shorted blinker lamps. (over twisted, they short)
and causes the module to just shut down.
test eash lamp by hand, to be sure its really good.

I'd start with a new flasher relay (they're cheap). If not that, then go to those lamp sockets and check for corrosion. I had issues similar w my 95 laredo...it was the flasher.

under the dash if you turn on-off-on-off it should click if not get a workshop manual and trace the wires

NO PROBLEM TURN ON THE RIGHT BLINKER THEN WALK AROUND THE CAR MAKE SURE FRONT AND REAR BULBS ARE FLASHING... IF YOU HAVE A BULB OUT YOU WILL NOT OFFER ENOUGH OF A LOAD TO THE FLASHER... WILL CAUSE IT TO FLASH FAST... IF OK THEN MAKE SURE THE PROPER BULB NUMBER ON BULBS AND MAKE SURE CORRECT BULBS USED IN VEHICLE.... IF OK CHANGE FLASHER

While not likely, it is possible that the light bulbs in both sides are have bad filaments. Turn on ignition key (but don't start engine). Then turn on parking lamps (first detent or "click" on headlamp switch). Walk around car and look for illumination on front parking lamps and rear tail lights. Turn on the right turn signal. Are those (right hand) lamps now changing brilliance? Try the left turn signal in the same manner. Are those (left hand) front and rear lights changing briiliance? Take note of any positions that did NOT change briliance when the turn signals were activated. If NONE changed briliance, you either have a bunch of bad bulbs (unlikely) or a bad flasher (more likely) or a bad turn signal switch (most likely) or perhaps wiring problems (possible if the car has been in a collision or has been "worked on" by some "non-expert" mechanic). Check the action of the emergency flasher control switch located on the steering column (facing up). Pushing it in (down) should result in the button going to two different heights alternately (low, high, low, high). You could just have bad flashers or corroded flasher contacts! Good luck!