How do you remove the tail light lens cover of a C1500 Chevy truck?

Open tailgate star torx scews inside remove and it pops out.

There are 2 tab locks, 1 at the top and bottom of the assembly. On the bottom is a small hole for prying it open. GENTLY hold the tab back while prying the assembly open.

Scrape the sealant goop out of the grooves and fill the grooves with black or clear silicone. Position the back up light reflector and the foam gasket.

After that it snaps back together easy as pie.

Read more: http://wiki.answers.com/Q/How_do_you_remove_the_tail_light_lens_covers_of_a_1990_GMC_truck#ixzz1IQU1csib