Chevrolet Blazer Owner's Manual page 253

252 Vehicle Care
3. Allow the hood to fall. Check to make
sure the hood is latched completely.
Repeat this process with additional force
if necessary.
Warning
Do not drive the vehicle if the hood is
not latched completely. The hood could
open fully, block your vision, and cause a
crash. You or others could be injured.
Always close the hood completely before
driving.