There is no button on front to release battery compartment

A local auto locksmith can make you a key by guesswork or by using an impressioning tool. Or they can open it and you can get a new lock and key. A local dealership can get you a key based on the VIN Number.

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.

The rear compartment lid release system consists of the following components:
• Body control module (BCM)
• Folding top cover actuator
• GMLAN serial data link
• Keyless entry transmitter
• Rear compartment lid ajar switch
• Rear compartment lid release actuator
• Rear compartment lid release switch
• Remote control door lock receiver (RCDLR)
• Trunk fuses
• Trunk release relay

Rear Compartment Lid Release System Operation
The rear compartment lid can be released by operating the rear compartment lid release switch or pressing the rear compartment lid release button on the keyless entry transmitter. When the rear compartment lid release switch is operated, the rear compartment lid release switch signal circuit to the body control module (BCM) is switched to ground. The BCM receives the rear compartment lid release switch input and applies ground to the trunk release relay control circuit. This energizes the trunk release relay coil, closing the switch side contacts, allowing battery voltage to be applied to the rear compartment lid release actuator and folding top cover actuator, releasing the buttresses and opening the rear compartment lid. Ground for the rear compartment lid release switch is provided at G300. The rear compartment lid ajar switch, rear compartment lid release actuator, and folding top cover actuator are provided ground at G301. The rear compartment lid will not release until the vehicle speed is zero and in park.

Do you know what DTC'S - diagnostic trouble codes are ?
DTC B3265 01 : Trunk Relay Output Short to Battery
DTC B3265 06 : Trunk Relay Output Short to Ground or Open

Do you know what a relay is an how it works ? TRUNK release relay located in the underhood fuse / relay box.
VEHICLE RELAYS Operation Diagnosis

Rear Compartment Lid Release
The rear compartment lid can be released by depressing the rear release button in the glove box or holding either front power door lock switch to the unlock position for a minimum of 2 seconds or by pressing the rear compartment release button on the key fob. The transmission must be in the PARK position for the rear compartment to release. No Key lock on the trunk ?

The retractable hard top is controlled by the folding top control (FTC) module.
Power Folding Top System Components
The power folding top system consists of the following components:
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The folding top control (FTC) module

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Hydraulic pump assembly; valve 1, valve 2 and motor

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The hydraulic lines and the cylinders

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GMLAN communication to the Body Control Module (BCM)

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Open/Close request circuit to the driver and passenger window motors

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Power and Grounds

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Folding Top Main Power Fuse 30A

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Folding Top Logic Power Fuse 20A

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Ground G301 for the FTC module and G305

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Folding Top Open/Close Switch (S15 and S16)

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Rear Compartment Limit Switches

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Rear Compartment Lid Release Switch (S3 and S4)

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Rear Compartment Lid Release Switch-Front Hinge-Left (S11 and S12)

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Rear Compartment Lid Release Switch-Front Hinge-Right (S9 and S10)

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Folding Top Front Location Pin Guide-Left (S17 and S18)

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Rear Compartment Lid Release Switch-Left (S19A)

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Rear Compartment Lid Release Switch-Right (S19B)

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Rear Compartment Partition Position Switch (S20)

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Folding Top Front Location Pin Position Switch (S13)

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Folding Top Front Latch Actuator Position Switch (S14)

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Hall Effect Sensors

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Folding Top Header Latch Cylinder Sensor (S1)

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Rear Compartment Cylinder Extended Sensor (S2)

Your best bet is have the system checked for DTC'S - diagnostic trouble codes ! If it showed a message top not secured there is a DTC stored in the control module ! there are 24 possible DTC'S

The Talkabout 101 is a very basic walkietalkie radio. With good batteries installed in the battery compartment, you should be able to turn the radio on, and simply press the front-center push-to-talk (PTT) button and speak. Release the button after speaking so the other person can do the same to talk back to you.

If you are having trouble opening the battery compartment, pull down on the black u-shaped sides and the back portion of the radio will slide down with the u-shaped sides to reveal the compartment. (This would be one of the most common questions asked on this style radio.)

Best regards.

I'm not sure about your exact model, but on my microsoft wireless mouse (model 1023) there is a silver button on the front that you push to release the plastic piece on top (push the button and hook the top plastic piece with your fingernail and lift up). There will be a battery compartment for 2 AA batteries. If there is no button release, look on the bottom of the mouse for a button or release flange. They are replaceable, so just investigate and play with it until you get it to open up. Good luck, and hope this works!

Battery Installation
Battery Compartment Cover
1) Grip the front of the mouse (the end with the buttons) with your left hand.
2) With your right hand hold the back of the mouse (end opposite the buttons) with your thumb on the bottom, and your index finger and middle finger resting on top.
3) Grip the mouse firmly, pressing down slightly on the GE logo on top of the mouse with the index and middle finger of your right hand, then pull back to release the battery cover.
4) Set the battery compartment cover aside. Insert 2 AAA batteries, being sure to match the polarity of the batteries with the polarity markings inside the battery compartment.
5) Replace the battery compartment cover.
6) Re-link your mouse. See Section 5.

you will need two new AAA batteries, then:

4. Battery Installation Battery Compartment Cover 1) Grip the front of the mouse (the end with the buttons) with your left hand. 2) With your right hand hold the back of the mouse (end opposite the buttons) with your thumb on the bottom, and your index finger and middle finger resting on top. 3) Grip the mouse firmly, pressing down slightly on the GE logo on top of the mouse with the index and middle finger of your right hand, then pull back to release the battery cover. 4) Set the battery compartment cover aside. Insert 2 AAA batteries, being sure to match the polarity of the batteries with the polarity markings inside the battery compartment. 5) Replace the battery compartment cover. 6) Re-link your mouse.