1. Check the Obvious:
* Obstructions: Is anything blocking the hatch from closing fully? Look for items in the way, even small ones that might be jamming the mechanism.
* Wiring: Sometimes, a loose or damaged wire to the latch mechanism can interfere with its operation. Inspect the wiring harness near the latch. Look for frayed wires, loose connections, or anything out of place.
* Latch Release Cable: If your model uses a cable to release the latch, the cable itself might be broken, stretched, or dislodged. Trace the cable from the interior release handle to the latch mechanism to check its condition.
2. Access the Latch Mechanism:
* Interior Access: On many models, you can access the latch mechanism from inside the car. This might involve removing interior trim panels around the hatch area. A repair manual specific to your 1986 Pontiac Trans Am would be incredibly helpful here. Consult one to determine exactly how to safely access the mechanism without causing more damage.
* Exterior Access: If interior access is difficult or impossible, you might need to access the mechanism from outside, potentially requiring partial or full removal of the rear hatch panel. This should only be done as a last resort and again, a repair manual would be crucial.
3. Troubleshooting the Latch:
Once you have access, carefully inspect the latch mechanism:
* Broken Parts: Look for any broken or damaged parts within the latch. This could include springs, levers, or the latch itself.
* Binding: Is anything binding or sticking? Lubricate moving parts with a dry lubricant (like silicone spray) or a specialized lock lubricant. *Avoid using WD-40, as it attracts dirt and can gum up the mechanism over time.*
* Rods or Cables: Ensure that any connecting rods or cables are properly seated and functioning. If a cable is broken or stretched, it might need replacement.
* Alignment: The latch might be slightly misaligned, preventing it from releasing. Try gently adjusting the latch mechanism (if possible without further damage).
4. Consider Professional Help:
If you're not comfortable working on the mechanism yourself, or if you've inspected everything and still can't find the problem, it's best to take your Trans Am to a qualified mechanic. They have the experience and tools to diagnose and repair the issue safely and efficiently.
Important Notes:
* Repair Manual: A repair manual specific to your 1986 Pontiac Trans Am is an invaluable resource. It will provide detailed diagrams, instructions, and torque specifications to help you with the repair.
* Safety First: Be careful when working on the latch mechanism. Avoid using excessive force, as you could damage parts or injure yourself. Disconnect the battery's negative terminal before working on any electrical components.
By systematically checking these areas, you should be able to identify the cause of the stuck hatchback latch and hopefully fix it yourself. Remember, if you're unsure about any step, seek professional assistance.
