GMC 1999 Suburban Owner's Manual page 126

Center Floor Console (If Equipped)
Your vehicle may have a console compartment between
the bucket seats.
To open it, lift the latch handle and swing the door open.
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Your console also has a
cupholder that swings out
for the back seat passengers
to use.
There is also a drawer that
slides out from the bottom
of the console.
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