Opel Blazer Operation & Maintenance Instructions Manual page 54

Keys
This vehicle has one
double-sided key which is
used for the ignition and
all the locks.
The key has a bar code tag which is given to the first
owner at delivery. The bar code tells your dealer or a
qualified locksmith how to make extra keys. Keep this
tag in a safe place. If you lose your keys, you'll be able
to have new ones made easily using this tag.
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