You Should not.
Danger of overheating bulb and wire melting
Then the problem must be ahead (before) the headlamp (wiring, switch, fuse).
Open the hood to the engine compartment. Remove the headlamp wiring harness. Remove the headlamp assembly retaining bolts. The headlamp will come out.
Remove the wiring harness from the back of your 1999 Chevy Astro headlamp. Remove the headlamp retaining bolts. The headlamp will come out. Reverse the process to install the new headlamp.
for the removal, pull of the upper radiator sight shield, make sure that the headlamp switch and the ignition switch are turned off, raise the headlamp assembly retainers by pushing rearward and then pulling up to save time. disconnect the headlamp assembly wiring harness and remove the headlamp assembly, install just do the reverse.
To remove the headlamp bulb on a 1991 Chevrolet Caprice simply twist the retainer counterclockwise, remove the bulb from the headlamp capsule and unplug the bulb from the wiring connector. To install the new bulb plug it into the wiring connector, insert the bulb into the headlamp capsule and twist the retainer clockwise and you're finished.
Make sure the headlights have been off for at least 45 minutes before you attempt to replace one of them. Remove the wiring harness on the back of the headlamp you wish to replace. Next, turn the weather cover clockwise and remove it. Inside the assembly, you'll see some retaining clips on the socket. They need to be released. Next, slide the socket out of the assembly and remove the bulb. Insert the new bulb, put the socket back into the assembly, and replace the clips. Put the weather cap back on and reattach the wiring harness.
1. Open the hood. 2. Remove the front air deflector. 3. Apply light pressure to the headlamp lens to hold the headlamp assembly in place while disconnecting the retainers. 4. Lift up the headlamp assembly retainers to release. Important: Note the location and position of the headlamp adjuster retainers and the locator tab. 5. Remove the headlamp assembly, pulling straight forward from the headlamp mounting panel. 6. Disconnect the wiring harness from the headlamp assembly. 7. Rotate the headlamp bulb/socket counterclockwise to release. 8. Remove the headlamp bulb/socket from the headlamp assembly, if required. There are (2) pull up clip retainers that hold the headlamp assembly in place...Both of these must be removed for the headlamp assembly to be pulled forward...:)
After 2 days of screwing with mine here is what I found: Open the hood There are 2 clips on top of the headlamp unit. Lift them. Pull the headlamp unit away from the vehicle. In back of the head lamp you will see a small round cover. Remove that cover and you should have access to the bulbs. Disconnect the wiring harness from the bulb. Remove the headlamp bulb by turning the socket counter clockwise. Install the replacement bulb by turning it clockwise. Re-assemble the headlamp.
Start with the headlamp switch.
The headlamp unit on an Astra van is changed by removing the wiring harness, unbolting the assembly, and lifting it from the vehicle. A new unit can then be put into place and bolted in.
Grounding issue, bad wiring, failing bulb.
Not without updating the wiring to include the CAN bus wires to the radio.