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How-To: Replace Trunk Switch
Overview:
On some model Cruzes, the trunk switch is not sealed, and corrosion causes the switch to fail permanently. The switch cannot be repaired and must be replaced. Repair requires replacement of the wiring harness.
Tools Required:
- Retainer removal tool, or a standard size flat-head screwdriver
- 9/32" Nut driver or socket
- 10mm deep socket and wrench
- Pliers, preferably needle nose.
Part Required:
Trunk Switch Assembly (Available on Amazon.com)
Procedure:
Open the trunk and remove the plastic retainers underneath the trunk lid. You can get a retainer removal tool, but I simply wedged a screwdriver underneath the slot to lift the lock tab out, then used the same screwdriver to lift the entire retainer.
Remove latch cover. You will have to tug at this but it will come off.
Using the 9/32" nut driver, remove the two screws holding down the trunk handle.
Un-snap the emergency trunk release from the cover.
Cover should now come off easily. Remove and set aside.
Disconnect the green trunk harness wire. The tab to press down to unlock it will be on the green side.
Underneath the chrome bar, there are four 10mm bolts. A 10mm deep socket is the best way to get to these, but using an extension would work fine as well. I forgot to take a picture of these but they will be easy to find. Remove all four. The only thing left holding the chrome bar onto the trunk lid will be two yellow plastic retainers. You can close these with some pliers, which will allow you to pop out the chrome bar.
Once the chrome bar is out, remove the light bulb sockets, and pop the switch out from behind. You may need to press the tabs in to do this. Here's what this will look like:
Next, pull the harness out from the trunk from the outside. The rubber gasket should pop out.
Installation is reverse of removal. Once the new harness is plugged in, you should be able to test its function immediately.
Old vs New switches:
Overview:
On some model Cruzes, the trunk switch is not sealed, and corrosion causes the switch to fail permanently. The switch cannot be repaired and must be replaced. Repair requires replacement of the wiring harness.
Tools Required:
- Retainer removal tool, or a standard size flat-head screwdriver
- 9/32" Nut driver or socket
- 10mm deep socket and wrench
- Pliers, preferably needle nose.
Part Required:
Trunk Switch Assembly (Available on Amazon.com)
Procedure:
Open the trunk and remove the plastic retainers underneath the trunk lid. You can get a retainer removal tool, but I simply wedged a screwdriver underneath the slot to lift the lock tab out, then used the same screwdriver to lift the entire retainer.
Remove latch cover. You will have to tug at this but it will come off.
Using the 9/32" nut driver, remove the two screws holding down the trunk handle.
Un-snap the emergency trunk release from the cover.
Cover should now come off easily. Remove and set aside.
Disconnect the green trunk harness wire. The tab to press down to unlock it will be on the green side.
Underneath the chrome bar, there are four 10mm bolts. A 10mm deep socket is the best way to get to these, but using an extension would work fine as well. I forgot to take a picture of these but they will be easy to find. Remove all four. The only thing left holding the chrome bar onto the trunk lid will be two yellow plastic retainers. You can close these with some pliers, which will allow you to pop out the chrome bar.
Once the chrome bar is out, remove the light bulb sockets, and pop the switch out from behind. You may need to press the tabs in to do this. Here's what this will look like:
Next, pull the harness out from the trunk from the outside. The rubber gasket should pop out.
Installation is reverse of removal. Once the new harness is plugged in, you should be able to test its function immediately.
Old vs New switches:
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