1. Check the Obvious:
* Is anything blocking the hatch? Look for anything obstructing the latch mechanism, like a toy, debris, or even ice (depending on the weather).
* Is the hatch jammed? Try gently pushing and pulling on the hatch to see if it's just stuck. A slight nudge might free it.
* Check the key (if applicable): If you have a key-operated release, make sure you're using the correct key and applying the correct pressure.
2. Check the Electrical System:
* Interior release button: Make sure the interior release button is functioning. Try it multiple times. If it doesn't work, the problem might be electrical.
* Power lock system: If your Silhouette has power locks, ensure the system is working correctly. Try locking and unlocking the entire vehicle to see if the hatch responds. A faulty power lock module can affect the hatch release.
* Fuses: Check the fuse box (usually located under the hood or in the interior) for blown fuses related to the power locks or rear hatch. Your owner's manual will show you the fuse layout.
* Wiring: Examine the wiring harness leading to the hatch release mechanism for any visible damage, cuts, or loose connections. This is more advanced and may require some electrical knowledge.
3. Check the Mechanical System:
* Latch mechanism: The latch mechanism itself could be faulty. This often requires accessing the latch mechanism (usually from inside the vehicle, behind the interior trim panel). You may need to remove the interior trim panel to get to it. Look for broken parts, obstructions, or binding. Lubrication (with a light lubricant like WD-40) *might* help a slightly sticky mechanism, but don't over-lubricate.
* Struts (Gas Springs): Weak or broken gas struts (the springs that help support the weight of the hatch) can prevent it from opening or closing properly. If the hatch feels unusually heavy or drops suddenly when you try to open it, this is a likely culprit. Replacing gas struts is usually a relatively straightforward job.
* Cable: Some models use a cable to connect the interior release button to the latch. The cable might be broken, stretched, or dislodged. Accessing this requires removing interior trim panels.
4. If All Else Fails:
* Professional Mechanic: If you've checked all of the above and the hatch remains stuck, it's time to take your Silhouette to a qualified mechanic. They have the tools and expertise to diagnose the problem accurately and perform the necessary repairs.
Important Safety Notes:
* Avoid forcing the hatch: Trying to force the hatch open can damage the mechanism further.
* Disconnect the battery: If you're working on the electrical system, it's a good safety precaution to disconnect the negative terminal of your battery to prevent accidental shorts.
* Interior Trim Removal: Removing interior trim panels can be tricky and may require specialized tools. Search online for "Pontiac Silhouette rear hatch trim removal" to find videos or instructions specific to your model year.
Remember to consult your owner's manual for diagrams and specifics related to your Pontiac Silhouette's model year. The exact location of components and repair procedures can vary slightly between model years.
