In the trunk area in the rear of the vehicle there is an access panel that will allow you to reach in and remove the nuts holding the taillight on.
There are three of them holding on each lens.
An instructional video has also been included below that will show you how this is done.
Go inside the trunk and remove the nuts from inside and pull the assembly out.
how to change a taillight in a 2008 Nissan maxima
a 2003 Chevy silverado taillight bulb uses a 3157
* Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops
* Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops
* Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops
* Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops
* Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops
* Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops
Open tailgate. Remove 2 torx screws in side of taillight. wiggle taillight out, Remove hex screws that hold bulb assembly in taillight. change bulb, Reassemble
Taillight bulb replacment/Taillight housing replacement * Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops
* Remove the rear inside trunk finishing panel to access the taillight housing mounting nuts * Free the grommet for the taillight electrical harness and the three taillight housing nuts then pull off the taillight housing * Rotate the bulb socket counterclockwise and pull it out of the taillight housing * To remove the bulb from the socket pull it straight out.To install a new bulb in the socket push it straight into the socket until it stops