Chevrolet 2010 Tahoe Owner's Manual page 136

If the Off Indicator is Lit for an
Adult-Size Occupant
If a person of adult-size is sitting in the right front
passenger seat, but the off indicator is lit, it could be
because that person is not sitting properly in the seat.
If this happens, use the following steps to allow the
system to detect that person and enable the right front
passenger frontal airbag:
1. Turn the vehicle off.
2. Remove any additional material from the seat,
such as blankets, cushions, seat covers, seat
heaters, or seat massagers.
3. Place the seatback in the fully upright position.
4. Have the person sit upright in the seat, centered
on the seat cushion, with legs comfortably
extended.
5. Restart the vehicle and have the person remain in
this position for two to three minutes after the on
indicator is lit.
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