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Manual Reclining Seatbacks
(Tahoe and Yukon Two-Mode Hybrid)
To recline the seatback:1. Lift the reclining seatback lever (C).
2. Move the seatback to the desired position, then release the lever to lock the seatback in place.
3. Push and pull on the seatback to make sure it is locked.
To return the seatback to an upright position: 1. Lift the lever fully without applying pressure to the seatback and the seatback will return to the upright
position.
2. Release the lever to lock the seatback in place.
3. Push and pull on the seatback to make sure it is locked.
Restraint System Check
Replacing Restraint System Parts
After a Crash
If an airbag inflates or the vehicle has been in a
crash, the vehicle's sensing system may command
the automatic hybrid battery disconnect to open.
The battery will disconnect. The hybrid battery will be
off and the vehicle will not start. The airbag readiness
light and/or SERVICE HYBRID SYSTEM warning
message may come on in the driver information center.
See “Airbag Readiness Light” in the owner manual and
Driver Information Center (DIC)
on page 4‑12for more
information.
To operate the vehicle, the automatic hybrid battery
disconnect must be reconnected by a qualified service
technician and sensing system parts will need to be
replaced. Have the vehicle serviced right away.
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Page 59 of 120

If doing some of your own service work, use the proper
service manual. It tells you much more about how to
service the vehicle than this manual can. To order the
proper service manual, see“Service Publications
Ordering Information” in the owner manual.
This vehicle has an airbag system. Before attempting
to do your own service work, see “Servicing Your
Airbag‐Equipped Vehicle” in the owner manual.
Keep a record with all parts receipts and list the
mileage and the date of any service work performed.
See “Maintenance Record” in the owner manual.Checking Things Under
the Hood
High Voltage Devices and Wiring
{WARNING:
Exposure to high voltage can cause shock, burns,
and even death. The high voltage systems in your
vehicle can only be serviced by technicians with
special training.
High voltage devices are identified by labels.
Do not remove, open, take apart, or modify these
devices. High voltage cable or wiring has orange
covering. Do not probe, tamper with, cut, or
modify high voltage cable or wiring.
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Page 73 of 120

Only a trained service technician with the proper
knowledge and tools should inspect, test, or replace
the hybrid battery. See your dealer/retailer if the
hybrid battery needs service. The dealer/retailer
has information on how to recycle the hybrid
battery. There is also information available at
http://www.recyclemybattery.com.
If an airbag inflates or the vehicle has been in a crash,
the vehicle's sensing system might command the
automatic hybrid battery disconnect to open. See
Replacing Restraint System Parts After a Crash
on
page 2‑3for more information.
{DANGER:
Battery posts, terminals, and related accessories
contain lead and lead compounds, chemicals
known to the State of California to cause cancer
and reproductive harm. Wash hands after
handling.
Vehicle Storage
{WARNING:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you are
not careful. See Jump Starting
on page 6‑18
for tips on working around a battery without
getting hurt.
Infrequent Usage: Remove the 12‐volt battery black,
negative (−) cable from the battery to keep the battery
from running down.
Extended Storage: Remove the 12‐volt battery black,
negative (−) cable from the battery or use a battery
trickle charger.
Remember to reconnect the battery when ready to drive
the vehicle.
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