oil pressure CHEVROLET TAHOE 2011 3.G Owners Manual

Black plate (1,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Instruments and Controls 5-1
Instruments and
Controls
Controls
Power Outlets . . . . . . . . . . . . . . . . . 5-2
Warning Lights, Gauges, and
Indicators
Instrument Cluster . . . . . . . . . . . . 5-3
Tachometer . . . . . . . . . . . . . . . . . . . 5-4
Fuel Gauge . . . . . . . . . . . . . . . . . . . 5-4
Fuel Economy Gauge . . . . . . . . . 5-6
Engine Oil Pressure Gauge . . . 5-6
Engine Coolant TemperatureGauge . . . . . . . . . . . . . . . . . . . . . . . 5-8
Charging System Light . . . . . . . . 5-8 Brake System Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . 5-10
StabiliTrak
®OFF Light . . . . . . . 5-10
Engine Oil Pressure Light . . . . 5-11
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . . 5-11
Vehicle Messages
Vehicle Messages . . . . . . . . . . . 5-12
Battery Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . 5-12
Brake System Messages . . . . 5-12
Door Ajar Messages . . . . . . . . . 5-13
Engine Oil Messages . . . . . . . . 5-13
Service Vehicle Messages . . . 5-13
Transmission Messages . . . . . 5-13

Black plate (6,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
5-6 Instruments and Controls
Fuel Economy Gauge
Metric
EnglishThis gauge shows displays how
efficiently the vehicle is being
driven.
There are three zones on the drive
efficiency gauge.
Green Zone:
Fuel efficient driving
behavior makes the indicator
display in the green zone on the
gauge.
White Zones: Decreased fuel
efficiency driving behavior makes
the indicator display in the two white
zones. The indicator in the white
zone on the left side of the gauge
indicates decreased fuel efficiency
with a large amount of
decelerations. The indicator in the
white zone on the right side of the
gauge indicates decreased fuel
efficiency with a large amount of
accelerations.
Engine Oil Pressure
Gauge
Metric

Black plate (7,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Instruments and Controls 5-7
English
The oil pressure gauge shows the
engine oil pressure in psi (pounds
per square inch) when the engine is
running. Canadian vehicles indicate
pressure in kPa (kilopascals).
Oil pressure should be 200 to
550 kPa (29 to 80 psi). In certain
situations, such as long extended
idles on hot days, it could read as
low as 105 kPa (15 psi) and still be
considered normal. A reading in the low pressure zone
may be caused by a dangerously
low oil level or some other problem
causing low oil pressure. Check the
oil as soon as possible.
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule for changing engine oil.
AUTO STOP
When the engine goes into
Automatic Engine Stop, the oil
pressure gauge drops to zero when
the tachometer is at the AUTO
STOP position. This is normal and
oil pressure returns to the normal
operating range once the engine
starts.
See Starting the Vehicle on
page 9‑2 for more information.
AUTO STOP displays in the Driver
Information Center (DIC) when the
vehicle speed is zero. See Driver
Information Center (DIC) on
page 5‑11 for more information.

Black plate (11,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Instruments and Controls 5-11
Engine Oil Pressure Light
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule for changing engine oil.
This light comes on briefly as a
check it works, when the ignition is
in ON/RUN. If it does not, have the
vehicle serviced.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and might have
some other system problem.
During an AUTO STOP there is zero
oil pressure, but this light will not
come on.
Information Displays
Driver Information
Center (DIC)
Trip/Fuel Menu Items
Press the trip/fuel button to display
the Trip/Fuel Menu items. For more
items see “Driver Information Center
(DIC)” in the owner manual.
BATTERY VOLTAGE
This display shows the current
battery voltage. If the voltage is in
the normal range, the value will
display. For example, the display
may read BATTERY VOLTAGE
13 VOLTS. Your vehicle's charging
system regulates voltage based on
the state of the battery. The battery
voltage may fluctuate when viewing
this information on the DIC. This is
normal. See “Charging System
Light” in the owner manual for more
information. If there is a problem
with the battery charging system,

Black plate (13,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Instruments and Controls 5-13
System Warning Light,”and“ABS
Brake System Warning Light” in the
owner manual.
This message may also come on
when you are towing a trailer. See
“Trailer Brakes” underTrailer Towing
on page 9‑16 for more information.
Door Ajar Messages
HOOD OPEN
If the hood is not fully closed or
there is a problem with the hood
switch, this message will be
displayed. Close the hood to clear
the message. If the HOOD OPEN
message continues to be displayed
after verifying the hood is closed,
you should have the hood switch
serviced. Failure to service the hood
switch properly can result in an Auto
Start condition.
Auto Stops will be disabled when
this message is displayed. If the
vehicle is in auto stop mode when
this message appears, the engine
will instantly start.
Engine Oil Messages
OIL PRESSURE LOW STOP
ENGINE
If engine oil pressure is low, this
message will be displayed on the
DIC. Stop the vehicle as soon as
safely possible and do not operate it
until the cause of the low oil
pressure has been corrected. Check
your oil level as soon as possible
and have your vehicle serviced. See
“Engine Oil”in the owner manual.
Service Vehicle Messages
SERVICE HYBRID SYSTEM
If this message is displayed on the
DIC, the vehicle may continue to
operate, but you need to have it
serviced as soon as possible.
SERVICE POWER STEERING
This message displays if a problem
has been detected with the electric
power steering. Have your vehicle
serviced by your dealer immediately.
Transmission Messages
SERVICE 4 WHEEL DRIVE
This message may display if a
problem occurs with the
four-wheel-drive system. If this
message appears, stop as soon as
possible and turn off the vehicle.
Make sure the key is in the LOCK/
OFF position for at least one minute
and then restart the vehicle and
check for the message on the DIC
display. If the message is still
displayed or appears again
when you begin driving, the
four-wheel-drive system needs
service. See your dealer.

Black plate (5,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
Vehicle Care 10-5
A. See“Engine Air Cleaner/Filter”
in the owner manual.
B. Drive Motor/Generator Control Module (DMCM). See Drive
Motor/Generator Control
Module (DMCM) Cooling
System on page 10‑9.
C. Engine Oil Dipstick (Out of View). See “Engine Oil” in the
owner manual.
D. Automatic Transmission Fluid Dipstick. See Automatic
Transmission Fluid on
page 10‑6. E. Brake Fluid Reservoir. See
“Brakes” in the owner manual.
F. See “Engine Compartment Fuse
Block” in the owner manual.
G. Windshield Washer Fluid Reservoir. See “Washer Fluid”
in the owner manual.
H. Hybrid Auxiliary Fuse Block (Out of View). See Engine
Compartment Fuse Block on
page 10‑15. I. DMCM Coolant Surge Tank
Pressure Cap. See Drive Motor/
Generator Control Module
(DMCM) Coolant Surge Tank
Pressure Cap on page 10‑9.
J. Coolant Surge Tank Pressure Cap. See “Engine Coolant” in
the owner manual.
K. Engine Oil Fill Cap (Out of View). See “Engine Oil” in the
owner manual.

Black plate (10,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
10-10 Vehicle Care
If the coolant inside the DMCM
coolant surge tank is boiling, do not
do anything else until it cools down.
The coolant level should be at or
above the FULL COLD mark with
the vehicle parked on a level
surface. If it is not, there might be a
leak at the DMCM cooler core,
DMCM pressure cap, DMCM cooler
hoses, DMCM cooling pump or
somewhere else in the DMCM
cooling system.Notice:
Running the engine when
there is a leak in the hybrid
cooling system can cause the
hybrid cooling system to lose all
coolant and can damage the
system. Get any leak fixed before
you drive the vehicle or run the
engine.
How to Add Coolant to the
DMCM Coolant Surge Tank
If no problem has been found yet,
check to see if coolant is visible in
the DMCM coolant surge tank. If coolant is visible, add pre‐mixed
DEX-COOL coolant, available at
your dealer, at the DMCM coolant
surge tank, but be sure the DMCM
cooling system, including the DMCM
coolant surge tank pressure cap, is
cool before you do it. Use the
procedure following.
{WARNING
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. They are
under pressure, and if you turn
the coolant surge tank pressure
cap
—even a little —they can
come out at high speed. Never
turn the cap when the cooling
system, including the coolant
surge tank pressure cap, is hot.
Wait for the cooling system and
coolant surge tank pressure cap
to cool if you ever have to turn
the pressure cap.

Black plate (2,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
i-2 INDEX
Engine (cont.)Oil Pressure Gauge . . . . . . . . . . . 5-6
Pressure Light . . . . . . . . . . . . . . . . 5-11
Running While Parked . . . . . . . . . 9-6
Engine Oil Messages . . . . . . . . . . . . . . . . . . . . 5-13
Equipment, Towing . . . . . . . . . . . . 9-17
F
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-22
Fluid Automatic Transmission . . . . . . 10-6
Four-Wheel DriveTransfer Case . . . . . . . . . . . . . . . 9-10
Power Steering . . . . . . . . . . . . . 10-12
Four-Wheel Drive . . . . . . . . . . . . . . 9-10
Fuel
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Fuel Economy Gauge . . . . . . . . . . 5-6
Fuses Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-15
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-15
G
GaugesEngine CoolantTemperature . . . . . . . . . . . . . . . . . 5-8
Engine Oil Pressure . . . . . . . . . . . 5-6
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Fuel Economy . . . . . . . . . . . . . . . . . 5-6
Tachometer . . . . . . . . . . . . . . . . . . . . 5-4
General Information Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-16
H
HeadlampsBulb Replacement . . . . . . . . . . 10-13
Heater Engine Coolant . . . . . . . . . . . . . . . . 9-4
Heating and Air Conditioning . . . 8-1
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 10-14
I
Instrument Cluster . . . . . . . . . . . . . . 5-3
Introduction . . . . . . . . . . . . . . . . . . . ii, 7-1
J
Jump Starting . . . . . . . . . . . . . . . . . 10-32
L
LightStabiliTrak®OFF . . . . . . . . . . . . . 5-10
Lights
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 5-10
Charging System . . . . . . . . . . . . . . 5-8
Engine Oil Pressure . . . . . . . . . . 5-11
Lumbar Adjustment . . . . . . . . . . . . . 3-1 Front Seats . . . . . . . . . . . . . . . . . . . . 3-1

Black plate (3,1)Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
INDEX i-3
M
Maintenance ScheduleRecommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 11-1
Scheduled Maintenance . . . . . . 11-1
Transfer Case . . . . . . . . . . . . . . . . 9-10
Manual Mode . . . . . . . . . . . . . . . . . . . 9-9
Messages
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 5-12
Brake System . . . . . . . . . . . . . . . . 5-12
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-13
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-13
Service Vehicle . . . . . . . . . . . . . . . 5-13
Transmission . . . . . . . . . . . . . . . . . 5-13
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-12
O
Oil
Engine Oil Pressure Gauge . . . . 5-6
Messages . . . . . . . . . . . . . . . . . . . . 5-13
Pressure Light . . . . . . . . . . . . . . . . 5-11
Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . 9-4
Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Seat Adjustment . . . . . . . . . . . . . . . 3-1
Steering Fluid . . . . . . . . . . . . . . . 10-12
R
Reclining Seatbacks . . . . . . . . . . . . 3-2
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . 11-1
Recreational Vehicle
Towing . . . . . . . . . . . . . . . . . . . . . . 10-36
Regenerative Braking . . . . . . . . . . 9-15
Replacement Bulbs . . . . . . . . . . . 10-14
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Replacing Airbag System . . . . . . . 3-2
Rotation, Tires . . . . . . . . . . . . . . . . 10-21
Routing, Engine Drive Belt . . . . . 12-3
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 9-6
S
Scheduled Maintenance . . . . . . . 11-1
Sealant Kit, Tire . . . . . . . . . . . . . . 10-24
Seats
Lumbar Adjustment, Front . . . . . 3-1
Power Adjustment, Front . . . . . . 3-1
Reclining Seatbacks . . . . . . . . . . . 3-2
Service Doing Your Own Work . . . . . . . . 10-2
Vehicle Messages . . . . . . . . . . . . 5-13
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . . 9-4
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . 12-2
StabiliTrak
®OFF Light . . . . . . . . . 5-10
Starting the Vehicle . . . . . . . . . . . . . 9-2
Steering . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Fluid, Power . . . . . . . . . . . . . . . . 10-12
Stoplamps and Back-Up Lamps Bulb Replacement . . . . . . . . . . 10-13
Storing the Tire Sealant and Compressor Kit . . . . . . . . . 10-31
Supplement Using . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii