If the filament of the parking light in the combination lamp of the left rear light has burned out, then until the moment of replacing the lamp you can continue driving by turning on the rear fog light.
In the dark, in clear weather, the fog light will have a blinding effect on drivers of vehicles moving behind your car. Therefore, try to replace the side light bulb in the rear light with a working one as soon as possible.
Work on replacing the combined parking light and brake light bulb (see "Replacing the bulbs in the rear light, removing the light"). The headlamp replacement is shown on the left headlamp. The operations are similar for the right headlamp.
Turn the headlight cover counterclockwise (there is an arrow on the lid indicating the direction of rotation)...
...and we take it off.
Disconnect the wiring harness from the headlight bulb.
Press down on the spring clamp of the lamp.
...and we disengage it from the hook.
We move the spring retainer to the side.
...and remove the headlight bulb from the headlight housing.
The headlamp is a halogen lamp. Do not touch its glass bulb with your fingers, as traces from them will cause the lamp to darken when heated. You can remove dirt from the bulb with a clean rag soaked in alcohol.
We install a new H4 headlight bulb in the reverse order.
[The article is reprinted from the website: ChevyMan]