Chevrolet 2013 VOLT Owner's Manual page 71

U: Suitable for universal category restraints approved for use in this mass group.
UF: Suitable for forward-facing universal category restraints approved for use in this mass group.
IL: Suitable for particular child restraints given in the attached list. These restraints may be of the specific vehicle,
restricted, or semi-universal categories.
B: Built-in restraint approved for this mass group.
X: Seat position not suitable for children in this mass group.
¹: Seating position must be adjusted to full up seat height travel.
Permissible Options for Fitting an ISOFIX Child Restraint System
Mass Group
Infant Carbed
(Carrycot)
0
(up to 10 kg)
0+
(up to 13 kg)
Class Size
F
G
E
E
D
C
Fixture
On Front
Passenger Seat
ISO/L1
ISO/L2
ISO/R1
ISO/R1
ISO/R2
ISO/R3
Seats and Restraints
Vehicle ISOFIX Positions
On Rear Outboard
X
X
X
X
X
X
3-21
Seats
X
X
IL¹
IL¹
IL²
IL³