Chevrolet Trailblazer 2023 Owner's Manual page 80

Try to pull the belt out of the retractor
to make sure the retractor is locked.
If the retractor is not locked, repeat
Steps 5 and 6.
7. Before placing a child in the child
restraint, make sure it is securely held in
place. To check, grasp the child restraint
at the seat belt path and attempt to
move it side to side and back and forth.
When the child restraint is properly
installed, there should be no more than
2.5 cm (1 in) of movement.
If the airbags are off, the OFF indicator in
the passenger airbag status indicator will
come on and stay on when the vehicle is
started.
If a child restraint has been installed and
the ON indicator is lit, see If the On
Indicator Is Lit for a Child Restraint under
Passenger Sensing System 0 58.
To remove the child restraint, unbuckle the
vehicle seat belt and let it return to the
stowed position.
Seats and Restraints 79