2011 GMC SAVANA light

Black plate (57,1)GMC Savana Owner Manual - 2011
Driving and Operating 9-57
If holes are made in the body, then
be sure to seal the holes later when
the hitch is removed. If the holes are
not sealed, deadly carbon monoxide
(CO) from the engine's exhaust can
get into the vehicle as well as dirt
and water. See“Carbon Monoxide”
under Engine Exhaust on
page 9‑26.
Safety Chains
Always attach chains between the
vehicle and the trailer. Cross the
safety chains under the tongue of
the trailer to help prevent the tongue
from contacting the road if it
becomes separated from the hitch.
Always leave just enough slack so
the rig can turn. Never allow safety
chains to drag on the ground.
Trailer Brakes
A loaded trailer that weighs more
than 680 kg (1,500 lbs) needs to
have its own brake system that is
adequate for the weight of the
trailer. Be sure to read and follow
the instructions for the trailer brakes
so they are installed, adjusted and
maintained properly.
Trailer Wiring Harness
The optional heavy-duty trailer
wiring package includes a wiring
harness, with a seven-pin connector
at the rear of the vehicle and a
four-wire harness assembly under
the driver side of the instrument
panel. The four-wire harness
assembly comes without a
connector.
If the vehicle does not have a trailer
hitch, the seven-wire harness
assembly with connector is taped
together and located in a frame
pocket at the driver side rear left
corner of the frame. If the vehicle has a trailer hitch, the
seven-wire harness assembly with
connector is attached to a bracket
on the hitch platform. In both cases,
the seven-wire harness has a
connector and includes a 30-amp
feed wire.
The seven-wire harness connector
contains the following trailer circuits:
.Light Green: Back-up Lamps
(10A fuse)**
.White: Ground
.Dark Blue: Trailer Brake Signal
.Dark Green: Right Rear Stop
and Turn Signal*
.Red/Black Stripe: Battery Feed
(30A Fuse)
.Brown: Trailer Park Lamp
Supply Voltage (15A fuse)**
.Yellow: Left Rear Stop and Turn
Signal *

Black plate (58,1)GMC Savana Owner Manual - 2011
9-58 Driving and Operating
The four-wire harness (without
connector) contains the following
circuits:
.Black: Ground
.Red/White: Battery Feed
.Dark Blue: Trailer Brake Signal
.Light Blue: CHMSL/Stoplamp
Supply Voltage
* If the vehicle is a cutaway with
trailer provisions, a 15 amp fuse will
be shared for both left/stop trailer
turn and right/stop trailer turn
signals. However, the cutaway
lighting connector will have a
10 amp fuse for each signal.
** If the vehicle is a cutaway with
trailer provisions, a 15 amp fuse will
be shared for trailer park lamps and
cutaway rear lighting connector park
lamps. Also, a 10 amp fuse will be
shared for trailer back-up lamps and
cutaway rear lighting connector
back-up lamps.
Tow/Haul Mode
This button is on the instrument
panel, to the right of the steering
wheel.
Pressing this button turns on and off
the tow/haul mode.
This indicator light on the instrument
panel cluster comes on when the
tow/haul mode is on.
Tow/Haul is a feature that assists
when pulling a heavy trailer or a
large or heavy load. See Tow/Haul
Mode on page 9‑34 for more
information. Tow/Haul is designed to be most
effective when the vehicle and
trailer combined weight is at least
75 percent of the vehicle Gross
Combined Weight Rating (GCWR).
See
“Weight of the Trailer” inTrailer
Towing on page 9‑52. Tow/Haul is
most useful under the following
driving conditions:
.When pulling a heavy trailer or a
large or heavy load through
rolling terrain.
.When pulling a heavy trailer or a
large or heavy load in stop and
go traffic.
.When pulling a heavy trailer or a
large or heavy load in busy
parking lots where improved low
speed control of the vehicle is
desired.

Black plate (59,1)GMC Savana Owner Manual - 2011
Driving and Operating 9-59
Operating the vehicle in Tow/Haul
when lightly loaded or with no trailer
at all will not cause damage.
However, there is no benefit to the
selection of Tow/Haul when the
vehicle is unloaded. Such a
selection when unloaded may
result in unpleasant engine and
transmission driving characteristics
and reduced fuel economy. Tow/
Haul is recommended only when
pulling a heavy trailer or a large or
heavy load.Conversions and
Add-Ons
Add-On Electrical
Equipment
Notice:Do not add anything
electrical to the vehicle unless
you check with your dealer first.
Some electrical equipment can
damage the vehicle and the
damage would not be covered by
the vehicle's warranty. Some
add-on electrical equipment can
keep other components from
working as they should. Add-on equipment can drain the
vehicle's 12‐volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see
Servicing the Airbag-Equipped
Vehicle on page 3‑41
andAdding
Equipment to the Airbag-Equipped
Vehicle on page 3‑42.

Black plate (15,1)GMC Savana Owner Manual - 2011
Vehicle Care 10-15
How to Check Automatic
Transmission Fluid
Because this operation can be
difficult, it is recommended to have
this check done at the dealer
service department, which can
monitor the transmission
temperature. The transmission
fluid level increases with
temperature. To obtain a highly
accurate fluid level check, the
transmission temperature must be
measured.
If it is decided to check the fluid
level, be sure to follow all the
instructions here, or a false reading
on the dipstick may occur.
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.
Wait at least 30 minutes with the
engine Off, before checking the
transmission fluid level if the vehicle
has been driven:
.In hot weather, when outside
temperatures are above
32°C (90°F).
.The vehicle is heavily loaded.
.At high speed for quite a while in
hot weather.
.In heavy traffic and hot weather.
.While pulling a trailer.
After driving under these conditions,
a hot check can be performed. The
fluid should be Hot, which is 71°C to
93°C (160°F to 200°F).
A cold fluid level check can be
performed after the vehicle has
been sitting for eight hours or more
with the engine off, but this is used
only as a reference. Let the engine
run at idle for five minutes if outside temperatures is between 15°C to
32°C (60°F to 90°F). Should the
fluid level be low during this cold
check, the fluid must be checked
Warm or Hot before adding fluid.
If the outside temperature is colder
than 15°C (60°F) or hotter than
32°C (90°F), a cold check cannot be
performed.
A warm fluid level check can be
performed by driving the vehicle
under lightly loaded conditions and
outside temperatures between 10°C
to 27°C (50°F to 80°F). The vehicle
should be driven for at least 24 km
(15 mi) before performing a warm
check. Checking the fluid Warm or
Hot will give a more accurate
reading of the fluid level than a cold
check.
Because the vehicle is equipped
with a high-efficiency air-to-oil
cooler, the transmission fluid
temperature may not reach the
required Hot fluid level checking
temperature under normal lightly
loaded driving vehicle conditions.

Black plate (18,1)GMC Savana Owner Manual - 2011
10-18 Vehicle Care
Engine Air Cleaner/Filter
If the vehicle has a diesel engine,
see the Duramax diesel supplement
for more information.
The engine air cleaner/filter is
located near the center of the
engine compartment. SeeEngine
Compartment Overview on
page 10‑6 for more information on
location.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the
scheduled maintenance intervals
and replace it at the first oil change
after each 80 000 km (50,000 mi)
interval. See Scheduled
Maintenance on page 11‑3 for more
information. If driving in dusty/dirty
conditions, inspect the filter at each
engine oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the air cleaner/filter,
remove the filter from the vehicle
and lightly shake the filter to release
loose dust and dirt. If the filter
remains covered with dirt, a new
filter is required. Never use
compressed air to clean the filter. To inspect or replace the engine air
cleaner/filter, do the following:
1. Unhook the retainer clips and
remove the cover.
2. Lift the filter out of the engine air cleaner/filter housing. Care
should be taken to dislodge as
little dirt as possible.
3. Clean the engine air cleaner/ filter housing.
4. Inspect or replace the engine air cleaner/filter. Make sure that the
filter fits properly into the
housing.
5. Reinstall the cover and fasten the retaining clips.

Black plate (28,1)GMC Savana Owner Manual - 2011
10-28 Vehicle Care
Brakes
This vehicle has disc brakes. Disc
brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be
heard all the time the vehicle is
moving, except when applying the
brake pedal firmly.
{WARNING
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Notice: Continuing to drive with
worn-out brake pads could result
in costly brake repair. Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in the
proper sequence to torque
specifications in
Capacities and
Specifications on page 12‑2.
Brake linings should always be
replaced as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service might be
required.
Brake Adjustment
Every time the brakes are applied,
with or without the vehicle moving,
the brakes adjust for wear.
Replacing Brake System Parts
The braking system on a vehicle is
complex. Its many parts have to be
of top quality and work well together
if the vehicle is to have really good
braking. The vehicle was designed
and tested with top-quality brake
parts. When parts of the braking
system are replaced, be sure to get
new, approved replacement parts.
If this is not done, the brakes might
not work properly. For example,
installing disc brake pads that are
wrong for the vehicle, can change
the balance between the front and
rear brakes —for the worse. The
braking performance expected can
change in many other ways if the
wrong replacement brake parts are
installed.

Black plate (41,1)GMC Savana Owner Manual - 2011
Vehicle Care 10-41
2. The third nut (C) is under theapplique piece (B) above the
lamp. Remove the two inboard
applique nuts. Pull the
applique (B) straight rearward
slightly to clear the studs. Then
rotate the applique (B) just far
enough to gain access to the
outer push pins (A). 3. Carefully disconnect the push
pins (A) from the applique
bracket
4. Remove the third nut (C) from the upper outboard side of
the lamp.
5. Remove the taillamp assembly from the vehicle.
6. Remove the taillamp/turn signallamp (A) or back‐up lamp (B)
bulb socket by turning it
counterclockwise one quarter
turn and pulling it out of the lamp
assembly. 7. Remove the bulb by pulling it
straight out.
8. Push the new bulb into the socket.
9. Reinstall the bulb socket by turning it clockwise into the lamp
assembly.
10. Reverse Steps 1 through 5 to reinstall the taillamp assembly
and applique.

Black plate (47,1)GMC Savana Owner Manual - 2011
Vehicle Care 10-47
Mini Fuse Usage53 Left Low‐Beam
Headlamp
54 Right Low‐Beam
Headlamp
55 Wiper
56 Canister Vent
Solenoid
58 Body Control
Module 2
59 Body Control
Module 1
61 Spare
62 Oxygen Sensor 2
(Post), EV Fan
(Diesel)
63 Spare
64 Mass Air Flow/
Canister Vent
65 Odd Ignition/
Injectors Mini Fuse Usage
66 Daytime
Running Lamps 2
(LOLVL‐V22)
(If Equipped)
67 Daytime Running
Lamps 1
(UPLVL+V22)
(If Equipped)
68 Auxiliary Stop
Lamps
69 Spare
70 Spare
71 Fuel Heater
72 Body Control
Module 6
73 Lighter/Data Link
Connection
75 V6 Fuel Injectors
76 Spare
77 Oxygen Sensor
2 (Pre) Mini Fuse Usage
78 Engine Control
Module Powertrain
79 Even Ignition/
Injectors
J‐Case Fuse Usage 1 ABS Motor
2 ABS Module
41 Spare
42 Trailer Wiring
43 Fan High
44 Starter Solenoid
45 Engine Control
Module/Powertrain
46 Spare
47 Fan Lo
74 Front Blower