Chevrolet 2002 Astro Owner's Manual page 88

Canceling the Sliding Door Security Lock
To cancel the security lock, do the following:
1. Unlock the door and open it from the outside.
2. Move the lever all the way down.
CAUTION:
If your vehicle is facing downward on a steep
grade (15 percent or more), the door may not
stay open and could slam shut, possibly injuring
someone. To make sure the door does not slam
shut, be sure to hold it open until everyone is
clear of the door, and only then allow it to
slowly close.
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