Do you mean the DRL/turn signal bulb or the parking light on the side of the cluster?
If you mean the DRLs you'll get three suggestions
Go in through the brake ducts - not easy with a Z06 or if you have screens
Go in through the bottom by taking out the bottom panel
The one that works for me is:
Turn on the headlights and back off one position to kill the lights.
Unscrew the 3 small screws on the black plastic housing around the headlight. Gently pull the housing clear. Reach down around the headlight unit and release the bulb holder. It unscrews counter clockwise but it has a plastic clip which you need to squeeze to release it. Change the bulb. Reseat the bulb holder and turn until it clicks back in place. Put the plastic housing back in place making sure to locate the small plastic tab in the bracket on the headlamp cover. Replace the 3 screws and close the lights
10 minute job. Some guys have had the lights close if they’ve taken a while to do the fix. If you’re worried about that, disconnect the battery once the lights are up.
The bulb is a 4157NA
Some guys with big arms remove the hood adjusting screw for better access. Guys with even bigger arms have had to take off the headlight cover. Four torx screws (2 back, 1 each side). Take the back ones off first with the lamps down. Raise the lights and take the side ones out.
If its the side light than the same procedure works but its a smaller lamp unit and its a 194 bulb.