Tailgate Removal - GMC Sierra 2008 Owner's Manual

Tailgate Removal

The tailgate can be removed to allow for different loading
situations. Although the tailgate can be removed without
assistance, you may want someone to assist you with
the removal to avoid possible damage to the vehicle.
To remove the tailgate, do the following:
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1. Raise the tailgate
slightly and release
both retaining cable
clips. To release the
retaining cable clips,
lift the cable so it
points straight out.
Lift the clip over the
bolt, and push the
cable forward then
rotate down.
2. With the tailgate about halfway open, lift the
right edge of the tailgate from the lower pivot.
On vehicles with the tailgate assist feature,
raise the tailgate nearly all the way to the closed
position prior to removing the left edge.
3. Move the tailgate to the right to release the
left edge.
Reverse this procedure to reinstall the tailgate.
Make sure the tailgate is secure.