Daytime running lights and blinkers do not work

I would check fuse and relay for daytime running lights
https://www.autogenius.info/pontiac-g6-2006-fuse-box-diagram/

Check the parking light fuse first. Then check to make sure the switch is actually providing power to the circuit

this sounds like the DTRL module is bad and needs replacing. the fog lights the bulbs them self could be burnt out or the switch for the lights has a problem.

Theres a sensor in the middle of the dash by the front windshield that detects sunlight and triggers the automatic headlights. The main headlights and daytime running lights might be on a different circuit, in which case they daytime running lamps would turn off at night and the main headlights would turn on, indicating the main headlights arent working and the daytime running lamps are working as intended.

I would check all the fuses related to headlights, check the bulbs and check the switch, then last the light sensor on the dash.

follow the wires to the drl relay. It must be inline from the regular light switch to the headlamps. I have a 1990 Cadillac Deville that has an aftermarket module that controls the daytime running lamps, and it is mounted on the driver's side wheel well.

Some relays are found in the fuse box under the hood.

If your daytime running lamps burnt out, take it to an electrical shop and ask them to check it out.

If you buy an aftermarket daytime running lamp kit, they can install it for you.

But, I agree, you should check for voltage and function at the relay for the daytime running lamps on your Astro.

But, if all else fails, the electrical shop should be able to diagnose and repair this problem.

could be unrelated problems.check taillight bulbs,check inline 2 amp fuse to the radio,sometimes they are a spade type fuse into the back of the radio

2 fuses, for park lamps, 6C 25 amp and 8C 10 amp

If you purchased your vehicle in the States, it is not equipped with Daytime Running Lamps, you will have to purchase an aftermarket module and have them installed to the parking lamp circuit in order to save the wear on your Xenon bulbs.  Only Canadian models have running lamps standard.  As far as your clock I know that the bulbs in Infiniti clocks are notorious for going bad. You can remove the clock and replace bulbs, but I would check your fuses, there is a fuse panel down in the drivers floor kick panel. I would suggest doing a google search for G35 manual and you can probably find some site that has a PDF version you can download for free. 

Not saying that you don't know this but the daytime lights are turned off in park.
If that is not your problem, a friend of mine uses the amber bulbs, they last longer.

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