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Chevrolet/GMC
FULL SIZE TRUCK
26/31
ZERo SPACE SUbwooFER InSTALLATIon
1
Remove the driver’s side rear cab pressure vent
from the vehicle by pressing the tab from the
bottom and push the vent through the back. The
vent will fall to the ground.
2
Cut the vent as shown.
2.5mm
10mm
2.5mm
Bottom Side
Top Side
Bottom Side
Top Side
After modification
Failure to modify according to recommendations
may result in incorrect fitment.
Before
3
Reinstall the modified pressure vent by pushing it in
from the outside in.