GMC Chevrolet SSR 2003 Owner's Manual page 307

The maximum speed label reminds you to drive
cautiously and not to exceed 55 mph (90 km/h)
until you have the damaged tire inspected
and repaired.
8. Attach the enclosed
maximum speed label
to the inside upper
left corner of the
windshield or to the
face of the radio/clock.
9. Drive the vehicle immediately to distribute the tire
sealant evenly inside the tire.
10. After driving for 10 minutes, recheck the tire
pressure. If the tire pressure is 19 psi (131 kPa) or
more, inflate the tire to the standard operating
pressure as shown on the Certification/Tire label
located on the edge of the driver's door.
If the tire pressure has dropped below 19 psi
(131 kPa), do not continue to drive the vehicle.
The tire is severely damaged and the tire sealant
will not be effective. Repair or replace the tire
as soon as possible.
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