Chevy Impala 2007 trunk lid release

Chances are the striker is now bent from slamming the trunk with the latch latched. My suggestion is take the car to a competent body shop. They might charge a little for fixing it, but wont do further damage.

Some simple things can work. Does the key turn? No? spray some releasing oil, (WD40 type), into the key hole and leave it to soak in for at least ten minutes. You might need a small screwdriver to open the spring loaded cover on the front of the lock. If the key turns try pushing down ******* the trunk lid to take the pressure of the latch.
Can you get access to the trunk from inside the vehicle by dropping the rear seats? Get a helper to push down on the trunk lid, climb into the trunk from inside the vehicle. There should be an emergency pull cord in the centre of the vehicles rear panel. Pull and hold this cord and get your helper to repeatedly push down and pull up on the trunk lid. This might 'pop' the trunk.

Do you know anything about automotive electronic's ? The trunk release is controlled by electronic control modules . Having the vehicle check for DTC'S - diagnostic trouble code's should be the first step in the diagnostic procedure . Then reading how it work's !
Factory service repair info.
Rear Compartment Lid Release System Components
• Body control module (BCM)
• Remote control door lock receiver
• Interior rear compartment lid release switch
• Exterior rear compartment lid release switch
• Rear compartment lid release actuator
• Trunk release relay

Rear Compartment Lid Release Operation
The interior rear compartment lid release switch receives a signal from the driver door switch assembly (DDSA). When the interior rear compartment lid release switch is activated, the signal circuit is pulled to ground. The DDSA interprets this and sends a GMLAN serial data message to the body control module (BCM) requesting the rear compartment lid be released. The BCM responds by applying battery voltage to the trunk release relay control circuit which energizes the TRUNK RELES relay. The trunk release relay is supplied with battery voltage at all times. With the relay coil energized, the relay switch contacts close allowing battery voltage to flow to the rear compartment lid release actuator causing the rear compartment lid to release. The rear compartment lid release actuator is permanently grounded at G402.

The trunk release relay is located in the rear fuse box located under the back seat.

Here's what you need Trunk Monkey Compilation

It can be trunk cable issue or the latch issue which gets open/close.It has to be inspected.=========
There are few relatively helps links with solutions to troubleshoot these problems.---------
I suggest you to go through the links and confirm the issue:------
Click the link below:----
Trunk release Problem on Toyota Camry? http://schematicsdiagram.blogspot.in/2012/02/trunk-release-problem-on-toyota-camry.html

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Trunk button Not Working on Buick car? http://schematicsdiagram.blogspot.com/2011/12/trunk-button-not-working-on-buick-car.html

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How to remove Trunk/Hatch Lock on Acura? http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-trunkhatch-lock-on-acura.html

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How to Remove Trunk Lid on Acura Integra? http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-trunk-lid-on-acura.html

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2005 Lexus SC430: Retractable hard top will not come down and Trunk will not open? http://howtobyme.blogspot.in/2012/05/2005-lexus-sc430-retractable-hard-top.html

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2000 Toyota Camry: Trunk will not Open? http://technoanswers.blogspot.in/2012/04/2000-toyota-camry-trunk-will-not-open.html

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These will help.
Thanks.

If back seats fold down like my 2003 Impala, you should be able to access trunk through back seat. There is an emergency release in the trunk to open trunk lid

How to Repair Trunk That Won Open part 1
How To Install Replace Trunk Latch 2006 12 Chevy Impala

Once a close fails, the latch may be now in the closed position, preventing a second try.
So release it first.
You should see the latch open up, so that it can accept the locking pin once again.
Then try closing it again.
If you have pounded on it, it may be hard to get it to release now, so you may have to pry on it with a screwdriver.

There's an electronic actuator inside the trunk door. The actuator opens the trunk lid when you press either the remote keyless entry or the inside trunk release. If the electronic actuator fails it usually fails in the trunk open mode which will not allow you to close the trunk lid. You can either remove the actuator and take the car to the VW dealer, or buy a new actuator and replace it yourself. It's a tough fix, but not impossible for the mechanically inclined.

fold down the rear seat and crawl to the back...there is a latch inside at the center of the trunk lid to open. All newer cars are mandated to have the inside release to prevent children from locking themselves in the trunk