GM Service Manual Online
For 1990-2009 cars only

The following procedures explain the proper operation of the retractable hardtop. The retractable hardtop will not operate if the valet lockout switch is on.

If the retractable hardtop is lowered or raised multiple times, the engine should be running while doing so to prevent drain on the vehicle's battery.

Caution: When the retractable hardtop is opened or closed, people can be injured by the parts that move: the hardtop and its mechanism, the trunk lid, and the side windows. Keep people away from these parts when you are lowering or raising the top.