Question about 2007 Pontiac G6 GT Convertible

3 Answers

Trunk lid opens and top lifts about one half inch and seems stuck. If I push the open button again the trunk lid will only descend on its own but very slowly

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  • rwayneb Nov 12, 2009

    Thank you. But the "Luggage compartment" works fine from thee remote control and the trunk release under the left door arm rest. When I push the "open top" button whicch is overhead and between the map lights, the trunk lid opens up--in the reverse--to stow the top keeping in mind that the spring loaded luggage cover has to be pulled forward and placed into two slots for the top to work normally. When the open top button is pushed, the trunk opens as normal but when the top starts to raise in order to travel to the trunk storage compartment, it only moves about 1/2 inch and no farther. The truck lid is awaiting the top to arrive but as it seems to get stuck it just stays open. I can close it with the switch as long as I don't try to push the opening button again. If I try it more than once at a time, the storage button will not bring the trunk lid back down but gravity on the two cylinders will allow the trunk lid to drop down far enough to touch the locking microswitches and I can then use the open-close switch to lock the trunk lid in its forward position.

    Also, immediatelly overhead centered is an access hole with what appears to be an emergency access to a motor as there is an end with socket wrench fitting as used to be in some soft top manual storage types. You are right about some weird things happening. i.e the traction control dash lights will come on and the"service traction" will come on the radio screen and when the battery died in myt remote starter,door locks, etc, the check engine light came on. Went out when I replaced the battery in the remote control!



    thanks

  • rwayneb Nov 13, 2009

    That doesn't seem possible but I will see if it can be done and let you know.

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3 Answers

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  • Master
  • 3,741 Answers

First check... If you don't hear a small click of a relay behind the dash when pushing the trunk release switch, check to see that the cancel button in the glove box (left side) is not activated. This will disable the remote trunk release. It should normally be pressed in to allow the trunk release button on your dash to work, and left out to deactivate trunk lock controls for higher security. Also note the service manual refers to the trunk as the "luggage compartment door" if you are trying to look for the details in the service manual schematic.

The next most likely thing... At this point you should know that many cars had a design defect in the wire harness at the left trunk lid hinge. Flexing the cable when the lid opens and closes, after many years, tends to fatigue the conductors in the wires because there wasn't enough slack. They tend to break one-by-one and be intermittant. Some control the license plate lights, tail & stop lights, trunk release, etc., and may cause strange things to occur in the electrical system when other things turn on, like when the brakes are applied.
One way to test the latch is to have someone slowly open the trunk lid while pushing the trunk release switch repeatedly. If it starts to work in a certain position, then you found the problem. This test is not guaranteed, but it's quick and saves time because you don't have to disassemble anything.
Inspect the wire harness as it goes through its motion and there will probably be a suspicious sharp bend point close to the main harness. This is a problem area, and to repair, you will have to strip all the tape and wire conduit carefully from the lid hinge to the main wire harness it connects to. Eventually, you should find one or two limp wires at the sharpest bend point. They will have to be cut, stripped and soldered, or apply crimp terminals or equivalent. Once fixed, tape back up allowing for more free movement so that no point has excess stress on it; no sharp bends.
To inspect the solenoid at the lock directly.... remove the panel on the inside of the trunk lid. This is held in by push pins which can be gently lifted up with a flat blade screwdriver and reused later. The plug to the solenoid, or motor as it is called in the manual, can then be squeezed to release it. This exposes two terminals. The one towards the front (blue) is terminal 1 going to the motor. The other goes to a switch. Do not test by applying power to the position switch located in the motor assembly. Only apply test voltage to the pin which went to the blue wire for the latch motor. Terminals are accessible with probes. The motor is grounded to the lid, so you have to ground the negative side of your test power source to the car body.
If you can't access the terminals, two bolts hold the trunk release solenoid mechanism to the trunk lid. You'll have to detach the emergency trunk release arm and keyed trunk release arm from the solenoid mechanism. You can then apply 12V to the solenoid connector terminal going to the blue wire. If the solenoid functions when power is applied, the problem will be in the wiring between the trunk lid and dash area. Removal shouldn't be necessary unless you really have to replace the assembly.
Check the fuse associated with this control. On the 2007 model it is fuse number 38 in the fuse panel just behind the coin tray. Fuses may control power to several devices, so if other things are not working, the fuse is more likely blown. However, a blown fuse may indicate other power problems and is likely a symptom and not the cause. Good luck if the fuse is blown. Replace once and hope, but make sure the easy steps above aren't at fault first.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Posted on Nov 12, 2009

  • charlymonty Nov 13, 2009

    thanks for keeping
    updated.for more help keep updated



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  • Pontiac Master
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Something is wrong with the electronics and the only people with the relevant software is the dealer ,i have a feeling this may be tied in the roof operating mechanism as some sort of safety feature ,if its classed as a safety item then the software will be encrypted as this is permitted .sorry to say this but the newer the cars the less a general mechanic can do because its being designed to make work for the dealer using original parts so dealer and factory are on a guarenteed bread earner

Posted on Nov 13, 2009

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  • Pontiac Master
  • 2,007 Answers

It's probably just filled with dust. If you can get it open, spray some brake cleaner on it, or at least blow it with compressed air, and then oil it with WD40 or something similar. You may have to pry the jaws open with a screwdriver or something to get it open more.

Posted on Nov 13, 2009

  • Dar
    Dar Nov 16, 2009

    Sorry. I didn't understand your post. After reading your second comment... wow. I suggest you take it back to the dealership. Must be still under warranty... i would hope.

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