I can't figure out how to replace the front turn signal

It could be the lamp control module !
Headlamps
Battery positive voltage (B+) is applied at all times to the lamp control module (LCM) through the underhood fuse block HDLP fuse.
When you place the headlamp switch in the HEAD position, the headlamps input to the LCM is grounded. The LCM then applies battery positive voltage (B+) through the underhood fuse block HDLOBML fuse and HDLOBMR fuse, which feed the left low beam headlamp and the right low beam headlamp respectively. When you activate the headlamp dimmer switch by pulling on the multifunction lever until the switch clicks, the high beam input circuit to the LCM in grounded . The LCM then removes battery positive voltage (B+) from the low beam headlamps and supplies battery positive voltage (B+) through the underhood fuse block HDHIBML fuse and HDHIBMR fuse, which feed the left high beam headlamp and the right high beam headlamp respectively.
Check this fuse in the left under hood fuse box first. HDLOBMR Fuse 18 10 Amp. RH Low Beam Headlamp . If the fuse is good check for B+ voltage with the low beams on . Use a test light or volt meter . If you look on top of fuse there are two metal tabs ,check there for B+ voltage , If no B+ voltage the LCM - lamp control module isn't supplying any .
Lamp Control Module (LCM)
Under the left side of the IP, to the right of the steering column
Turn Signal Flasher
Under the left side of the IP, to the right of the steering column
Lighting Systems Component Views in Lighting Systems
Lighting Systems Connector End Views in Lighting Systems
Turn Signal/Hazard Switch
In the left front of the passenger compartment, in the steering column

This is usually caused by a failed front control module as this unit controls the lighting on the vehicle!
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airbag reset tool

WAY TO GO !!! another "great idea" from vehicle manufactures

If you have separate bulbs for the low and high beams(4 light system), if you pull the turn signal and hold it, all 4 lights will stay on until you release the turn signal. You need to replace the bright bulb on the right side and the low bulb on the left side. If your headlights only have one bulb on each side, then you will have to replace both of them to get everything to work.

You need a new headlight dimmer switch located on the steering column between the dash and the firewall

just replace the dimmer switch under the column its wore out on the low beam side

pull on the signal lever toward you (ceter position). the signal lever controls the head lights either high beam or low beam. if you pull on the signal lever toward you again, you will have high beam temporarily. and if you push the signal lever towards the front, you will have the high beam locked.

Could be a bad ground, defective bulb sockets, or defective multifunction switch.

check your relays, they are like big fuses in your engine compartment, if your low beam and high beam relays are the same model, switch them and see if this enables low beams and disables the high beams. if it not the relays, or fuses, then it is probably your wiring harness, an expensive repair.

Some time back I found some data on a similar website suggesting that the Day Light Running circuit board, just under the steering column, developed cracks in some of the soldered joints. Your high beams should also be affected with loss of day light running lights.
Resoldering repaired the continuity of the circuits. Ours is now working quite reliably. Some of the defective areas developed slight brownish discoloration, that's how I was told to recognise the areas to be resoldered. Hope this will help you solve your problem.