How do I change the back up lights in a 1998 Pontiac Bonneville ssei Was told by auto zone I need to take off the whole panel on trunk lid.

the owners manual should tell you

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4 or 5 nuts in trunk lid all will have guide holes might be hiding ( under carpet or plastic) most likely a 10 mm remove them lights will pull out look for bulb behind white lens (area lights like up) n replace bulb socket will twist or pull out