1. Identify the Problem:
* Fuse: Check the vehicle's fuse box for a blown fuse related to the power windows. Your owner's manual will show you the fuse box location and the fuse assignments.
* Wiring: A broken or disconnected wire could be the culprit. This requires tracing the wiring harness from the switch to the motor. This can be challenging and requires some electrical knowledge.
* Window Regulator: The window regulator itself might be broken. This is a mechanical part that helps the window move up and down. A broken regulator will prevent the motor from functioning correctly, even if the motor is good.
* Window Motor: The motor itself may have burned out. This is the most common reason for window failure.
2. Accessing the Window Mechanism:
This varies slightly depending on the year of your Astro van, but the general process is similar:
* Interior Panel Removal: You'll need to remove the interior door panel. This usually involves unscrewing screws and carefully prying the panel away from the door using plastic trim tools (to avoid scratching). There are many online resources with videos demonstrating this specific to your Astro's year. Search YouTube for "Chevy Astro van [your year] door panel removal".
* Accessing the Motor: Once the panel is off, you'll see the window regulator and motor mechanism. You'll likely need to disconnect the electrical connector to the motor and possibly some other components before you can fully access and remove the motor.
3. Repair or Replacement:
* Repairing the Motor (difficult): Unless you have experience with small electric motors, repairing a window motor is usually not practical. Replacement is usually more cost-effective.
* Replacing the Motor: You can purchase a replacement window motor online or at an auto parts store. Ensure you get the correct motor for your specific year and door. Installation is generally straightforward if you followed the removal process carefully, but it can be somewhat involved.
* Replacing the Regulator (more common): The regulator often fails before the motor. Replacement involves removing the regulator assembly and installing the new one.
Important Considerations:
* Safety First: Disconnect the battery's negative terminal before working on the electrical system.
* Tools: You'll need a set of screwdrivers (Phillips and flathead), trim removal tools, possibly a socket set, and possibly a multimeter to test the motor and wiring.
* Online Resources: YouTube videos and repair manuals specific to your Astro van's year are invaluable. Search for "Chevy Astro van window repair" + your year.
In short: Getting the window up without a working motor requires you to physically access and replace or repair the motor or regulator. It's not a simple fix and usually requires some mechanical aptitude and tools. If you're not comfortable doing this yourself, take it to a mechanic.