Graco SnugRide SnugLock 30 Instruction Manual page 69

The following types of vehicle seat belts CANNOT be
used safely with this car seat:
Lap Belt with Motorized Lap Belt or Shoulder Belt
Shoulder Belt Mounted on Door
Belts Forward of
the Seat Bight
Some vehicles you
may not get a secure
fit. Read both your
vehicle and car seat
manuals.
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