
Black plate (13,1)Chevrolet Avalanche Owner Manual - 2012
Vehicle Care 10-13
Automatic Transmission
Fluid
When to Check and Change
Automatic Transmission Fluid
It is usually not necessary to
check the transmission fluid level.
The only reason for fluid loss is a
transmission leak or overheating the
transmission. If a small leak is
suspected, then use the following
checking procedures to check the
fluid level. However, if there is a
large leak, then it may be necessary
to have the vehicle towed to a
dealer and have it repaired before
driving the vehicle further.
Notice:Use of the incorrect
automatic transmission fluid may
damage the vehicle, and the
damages may not be covered by
the vehicle warranty. Always use
the automatic transmission fluid
listed in Recommended Fluids
and Lubricants on page 11‑12. Change the fluid and filter at the
intervals listed in the Maintenance
Schedule. See
Maintenance
Schedule on page 11‑3. Be sure to
use the transmission fluid listed in
Recommended Fluids and
Lubricants on page 11‑12.
How to Check Automatic
Transmission Fluid
Notice: Too much or too
little fluid can damage the
transmission. Too much can
mean that some of the fluid could
come out and fall on hot engine
parts or exhaust system parts,
starting a fire. Too little fluid
could cause the transmission to
overheat. Be sure to get an
accurate reading if checking the
transmission fluid. Before checking the fluid level,
prepare the vehicle as follows:
1. Start the engine and park the
vehicle on a level surface. Keep
the engine running.
2. Apply the parking brake and place the shift lever in P (Park).
3. With your foot on the brake pedal, move the shift lever
through each gear range,
pausing for about three seconds
in each range. Then, move the
shift lever back to P (Park).
4. Allow the engine to idle (500 –800 rpm) for at least
one minute. Slowly release the
brake pedal.
5. Keep the engine running and press the Trip/Fuel button or
trip odometer reset stem until
TRANS TEMP (Transmission
Temperature) displays on the
Driver Information Center (DIC). 

Black plate (14,1)Chevrolet Avalanche Owner Manual - 2012
10-14 Vehicle Care
6. Using the TRANS TEMPreading, determine and
perform the appropriate check
procedure. If the TRANS TEMP
reading is not within the required
temperature ranges, allow the
vehicle to cool, or operate the
vehicle until the appropriate
transmission fluid temperature is
reached.
Cold Check Procedure
Use this procedure only as a
reference to determine if the
transmission has enough fluid to be
operated safely until a hot check
procedure can be made. The hot
check procedure is the most
accurate method to check the fluid
level. Perform the hot check
procedure at the first opportunity.
Use this cold check procedure to
check fluid level when the
transmission temperature is
between 27°C and 32°C (80°F
and 90°F).
1. Locate the transmission dipstick at the rear of the engine
compartment, on the passenger
side of the vehicle.
See Engine Compartment
Overview on page 10‑6 for more
information.
2. Flip the handle up and then pull out the dipstick and wipe it with
a clean rag or paper towel.
3. Install the dipstick by pushing it back in all the way, wait
three seconds, and then pull it
back out again.
4. Check both sides of the dipstick and read the lower level. Repeat
the check procedure to verify the
reading.5. If the fluid level is below theCOLD check band, add only
enough fluid as necessary to
bring the level into the COLD
band. It does not take much
fluid, generally less than 0.5 L
(1 pt). Do not overfill.
6. Perform a hot check at the first opportunity after the
transmission reaches a normal
operating temperature between
71°C to 93°C (160°F to 200°F).
7. If the fluid level is in the acceptable range, push the
dipstick back in all the way, then
flip the handle down to lock the
dipstick in place. 

Black plate (15,1)Chevrolet Avalanche Owner Manual - 2012
Vehicle Care 10-15
Hot Check Procedure
Use this procedure to check the
transmission fluid level when the
transmission fluid temperature is
between 71°C and 93°C (160°F
and 200°F).
The hot check is the most accurate
method to check the fluid level. The
hot check should be performed at
the first opportunity in order to verify
the cold check. The fluid level rises
as fluid temperature increases,
so it is important to ensure the
transmission temperature is within
range.
1. Locate the transmission dipstickat the rear of the engine
compartment, on the passenger
side of the vehicle.
See Engine Compartment
Overview on page 10‑6 for more
information.
2. Flip the handle up and then pull out the dipstick and wipe it with
a clean rag or paper towel.
3. Install the dipstick by pushing it back in all the way, wait
three seconds, and then pull it
back out again.
4. Check both sides of the dipstick and read the lower level. Repeat
the check procedure to verify the
reading.5. Safe operating level is within theHOT cross hatch band on the
dipstick. If the fluid level is not
within the HOT band, and the
transmission temperature is
between 71°C and 93°C (160°F
and 200°F), add or drain fluid as
necessary to bring the level into
the HOT band. If the fluid level is
low, add only enough fluid to
bring the level into the HOT
band. It does not take much
fluid, generally less than 0.5 L
(1 pt ). Do not overfill.
6. If the fluid level is in the acceptable range, push the
dipstick back in all the way, then
flip the handle down to lock the
dipstick in place. 

Black plate (4,1)Chevrolet Avalanche Owner Manual - 2012
11-4 Service and Maintenance
.Visually inspect windshield wiper
blades for wear, cracking,
or contamination. SeeExterior
Care on page 10‑96. Replace
worn or damaged wiper blades.
See Wiper Blade Replacement
on page 10‑35.
.Check tire inflation pressures.
See Tire Pressure on
page 10‑56.
.Inspect tire wear. See Tire
Inspection on page 10‑62.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10‑16.
.Inspect brake system.
.Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of
wear. See Exterior Care on
page 10‑96.
.Check restraint system
components. See Safety System
Check on page 3‑20.
.Visually inspect fuel system for
damage or leaks.
.Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
.Lubricate body components. See
Exterior Care on page 10‑96.
.Check starter switch. See Starter
Switch Check on page 10‑33.
.Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check on
page 10‑33.
.Check ignition transmission lock.
See Ignition Transmission Lock
Check on page 10‑34.
.Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check on
page 10‑34.
.Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
.Inspect sunroof track and seal,
if equipped. See Sunroof on
page 2‑25. 

Black plate (12,1)Chevrolet Avalanche Owner Manual - 2012
11-12 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.Usage Fluid/Lubricant
Engine Oil Use only engine oil licensed to the dexos1 specfication, or equivalent, of
the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is
recommended. See
Engine Oil on page 10‑8.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See
Engine Coolant on page 10‑18.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 12377967, in
Canada 89021320).
Windshield Washer Optikleen
®Washer Solvent.
Power Steering System GM Power Steering Fluid (GM Part No. 89021184, in Canada 89021186).
Automatic Transmission DEXRON
®-VI Automatic Transmission Fluid.
Key Lock Cylinders Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Chassis Lubrication Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Front Axle SAE 80W-90 Axle Lubricant (GM Part No. 89021671, in
Canada 89021672). 

Black plate (13,1)Chevrolet Avalanche Owner Manual - 2012
Service and Maintenance 11-13
UsageFluid/Lubricant
Rear Axle SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 89021677, in
Canada 89021678).
Transfer Case DEXRON
®-VI Automatic Transmission Fluid.
Front Axle Propshaft Spline or One-Piece Propshaft Spline
(Two-Wheel Drive with Auto. Trans.) Spline Lubricant, Special Lubricant (GM Part No. 12345879, in
Canada 10953511).
Hood Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Outer Tailgate Handle Pivot Points Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or
Dielectric Silicone Grease (GM Part No. 12345579, in Canada 992887).
Weatherstrip Squeaks Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in
Canada 10953437). 

Black plate (2,1)Chevrolet Avalanche Owner Manual - 2012
12-2 Technical Data
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and
Lubricants on page 11‑12 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant R134a For the air conditioning system refrigerant charge
amount, see the refrigerant label located under the hood. See your dealer for more information.
Cooling System 15.9 L 16.8 qt
Engine Oil with Filter 5.7 L† 6.0 qt†
Fuel Tank 119.2 L 31.5 gal
Transmission Fluid (Pan Removal and Filter Replacement) 5.7 L 6.0 qt
Transfer Case Fluid 1.5 L 1.6 qt
Wheel Nut Torque 190 Y140 lb ft
†Oil filter should be changed at every oil change.
After refill, the level must be rechecked. Add enough engine coolant so that the fluid is within the proper operating
range. 

Black plate (1,1)Chevrolet Avalanche Owner Manual - 2012
INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-28
Active Fuel Management
®. . . . . 9-30
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 9-84
Additional Information, OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-5
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . 9-22
Adjustments Lumbar, Front Seats . . . . . . . . . . . 3-4
Air Cleaner/Filter, Engine . . . . . 10-16
Air Vents . . . . . . . . . . . . . . . . . . . . . . 8-10
Airbag Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-34
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . 3-35
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-27
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 3-29
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-27 Airbag System (cont'd)
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . 3-28
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-25
Where Are the Airbags? . . . . . . 3-24
Airbags Passenger Status Indicator . . . 5-17
Readiness Light . . . . . . . . . . . . . . 5-16
Servicing Airbag-EquippedVehicles . . . . . . . . . . . . . . . . . . . . . 3-34
System Check . . . . . . . . . . . . . . . . 3-22
Alarm System Anti-theft . . . . . . . . . . . . . . . . . . . . . . 2-17
AM-FM Radio . . . . . . . . . . . . . . . . . . . 7-8
Antenna Satellite Radio . . . . . . . . . . . . . . . . 7-13
Anti-theft
Alarm System . . . . . . . . . . . . . . . . 2-17
Alarm System Messages . . . . . 5-42
Antilock Brake System (ABS) . . . . . . . . . . . . . . . . 9-44
Warning Light . . . . . . . . . . . . . . . . . 5-22 Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . 10-96
Interior . . . . . . . . . . . . . . . . . . . . . . 10-99
Armrest Storage . . . . . . . . . . . . . . . . 4-1
Assistance Program, Roadside . . . . . . . . . . . . . . . 13-7, 13-9
Audio Players . . . . . . . . . . . . . . . . . 7-14
CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
CD/DVD . . . . . . . . . . . . . . . . . . . . . . 7-19
Audio System Radio Reception . . . . . . . . . . . . . . 7-13
Rear Seat (RSA) . . . . . . . . . . . . . 7-45
Theft-Deterrent Feature . . . . . . . . 7-2
Automatic Door Locks . . . . . . . . . . . . . . . . . . . . 2-8
Headlamp System . . . . . . . . . . . . . 6-4
Level Control . . . . . . . . . . . . . . . . . 9-50
Automatic Transmission . . . . . . . 9-32 Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-13
Manual Mode . . . . . . . . . . . . . . . . . 9-35
Shift Lock ControlFunction Check . . . . . . . . . . . 10-33
Auxiliary Devices . . . . . . . . . . . . . . 7-30
Axle, Front . . . . . . . . . . . . . . . . . . . . 10-31
Axle, Rear . . . . . . . . . . . . . . . . . . . . 10-31