2017 GMC SAVANA PASSENGER brakes

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/6/16
198 Driving and Operating
How the System Works
RPA comes on automatically when
the shift lever is moved into
R (Reverse). A single beep sounds
to indicate the system is working.
RPA operates only at speeds less
than 8 km/h (5 mph).
An obstacle detection is indicated
by beeps. The time between beeps
gets shorter as the vehicle
approaches the obstacle. Repeated
beeps are heard when the distance
is less than 30 cm (12 in).
To be detected, objects must be at
least 25 cm (10 in) off the ground
and below rear door level. Objects
must also be within 2.5 m (8 ft) from
the rear bumper. This distance may
be less during warmer or humid
weather.
Turning the System On and Off
The system can be disabled through
the Driver Information Center (DIC).
See“Park Assist” underDriver
Information Center (DIC) 0108. RPA defaults to the on setting each
time the vehicle is started.
Turn RPA off when towing a trailer.
When the System Does Not
Seem to Work Properly
The following messages may be
displayed on the DIC:
SERVICE PARK ASSIST :
If this
message occurs, take the vehicle to
your dealer for repair.
PARK ASSIST OFF : This message
occurs if the driver disables the
system or if the vehicle is driven
above 8 km/h (5 mph) in
R (Reverse).
PARK ASST BLOCKED SEE
OWNERS MANUAL : This
message can occur under the
following conditions:
. The sensors are not clean. Keep
the rear bumper free of mud,
dirt, snow, ice, slush, and frost.
The message may not clear until
frost or ice has melted all around
and inside the sensor. .
A trailer is attached to the
vehicle, or a bicycle or an object
hanging out of the rear door
during the current or last drive
cycle. RPA will return to normal
operation after it is determined
the object is removed. This
could take a few drive cycles.
. A tow bar is attached to the
vehicle.
Other conditions may affect system
performance, such as vibrations
from a jackhammer or the
compression of air brakes on a very
large truck.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/6/16
Driving and Operating 203
Warning (Continued)
.Place the container on the
ground.
. Place the nozzle inside the
fill opening of the container
before dispensing fuel, and
keep it in contact with the fill
opening until filling is
complete.
. Fill the container no more
than 95% full to allow for
expansion.
. Do not smoke, light
matches, or use lighters
while pumping fuel.
. Avoid using cell phones or
other electronic devices.
Trailer Towing
General Towing
Information
Only use towing equipment that has
been designed for the vehicle.
Contact your dealer or trailering
dealer for assistance with preparing
the vehicle for towing a trailer. Read
the entire section before towing a
trailer.
For towing a disabled vehicle, see
Towing the Vehicle 0287. For
towing the vehicle behind another
vehicle such as a motor home, see
Recreational Vehicle Towing 0287.
Driving Characteristics
and Towing Tips
Driving with a Trailer
When towing a trailer:
.
Become familiar with the state
and local laws that apply to
trailer towing. .
The trailer must be equipped
with brakes adequate for the
intended use. A loaded trailer
weighing more than 680 kg
(1,500 lb) must be equipped with
its own brake system, with
brakes working on all axles.
Trailer braking equipment
conforming to Canadian
Standards Association (CSA)
requirement CAN3-D313, or its
equivalent, is recommended.
. Do not tow a trailer during the
first 800 km (500 mi) to prevent
damage to the engine, axle,
or other parts.
. Then during the first 800 km
(500 mi) of trailer towing, do not
drive over 80 km/h (50 mph) and
do not make starts at full throttle.
. Vehicles can tow in D (Drive).
The Tow/Haul Mode may be
used if the transmission shifts
too often. See Tow/Haul
Mode 0188.
. Turn off Park Assist when
towing.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/6/16
204 Driving and Operating
{Warning
When towing a trailer, exhaust
gases may collect at the rear of
the vehicle and enter if the
liftgate, trunk/hatch, or rear-most
window is open.
When towing a trailer:. Do not drive with the
liftgate, trunk/hatch,
or rear-most window open.
. Fully open the air outlets on
or under the instrument
panel.
. Also adjust the climate
control system to a setting
that brings in only outside
air. See “Climate Control
Systems” in the Index.
For more information about
carbon monoxide, see Engine
Exhaust 0183.
Towing a trailer requires a certain
amount of experience. The
combination you are driving is
longer and not as responsive as the vehicle itself. Get acquainted with
the handling and braking of the rig
before setting out for the open road.
The structure, tires, and brakes of
the trailer must be rated to carry the
load. Inadequate trailer equipment
can cause the combination to
operate in an unexpected or unsafe
manner.
Before starting, check all trailer hitch
parts and attachments, safety
chains, electrical connectors, lamps,
tires, and mirrors. Get familiar with
the handling and braking of the rig.
If the trailer has electric brakes, start
the combination moving and then
apply the trailer brake controller by
hand to be sure the brakes work.
During the trip, check occasionally
to be sure that the load is secure
and the lamps and any trailer
brakes still work.
Following Distance
Stay at least twice as far behind the
vehicle ahead as you would when
driving the vehicle without a trailer.
This can help to avoid heavy
braking and sudden turns.
Passing
More passing distance is needed
when towing a trailer. The
combination will not accelerate as
quickly and is longer so it is
necessary to go much farther
beyond the passed vehicle before
returning to the lane.
Backing Up
Hold the bottom of the steering
wheel with one hand. To move the
trailer to the left, move that hand to
the left. To move the trailer to the
right, move your hand to the right.
Always back up slowly and,
if possible, have someone
guide you.
Making Turns
Caution
Making very sharp turns while
trailering could cause the trailer to
come in contact with the vehicle.
The vehicle could be damaged.
Avoid making very sharp turns
while trailering.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/6/16
Driving and Operating 205
When turning with a trailer, make
wider turns than normal. Do this so
the trailer will not strike soft
shoulders, curbs, road signs, trees,
or other objects. Avoid jerky or
sudden maneuvers. Signal well in
advance.
If the trailer turn signal bulbs burn
out, the arrows on the instrument
cluster will still flash for turns. It is
important to check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a lower
gearbefore starting down a long or
steep downgrade. If the
transmission is not shifted down, the
brakes might get hot and no longer
work well.
Vehicles can tow in D (Drive). Shift
the transmission to a lower gear if
the transmission shifts too often
under heavy loads and/or hilly
conditions.
The Tow/Haul Mode may be used if
the transmission shifts too often.
See Tow/Haul Mode 0188. When towing at high altitude on
steep uphill grades, consider the
following: Engine coolant will boil at
a lower temperature than at normal
altitudes. If the engine is turned off
immediately after towing at high
altitude on steep uphill grades, the
vehicle may show signs similar to
engine overheating. To avoid this,
let the engine run while parked,
preferably on level ground, with the
transmission in P (Park) for a few
minutes before turning the engine
off. If the overheat warning comes
on, see
Engine Overheating 0231.Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface. If parking the rig on a hill:
1. Press the brake pedal, but do not shift into P (Park) yet. Turn
the wheels into the curb if
facing downhill or into traffic if
facing uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the regular
brakes until the chocks absorb
the load.
4. Reapply the brake pedal. Then apply the parking brake and
shift into P (Park).
5. Release the brake pedal.Leaving After Parking on a Hill
1. Apply and hold the brake pedal.
2. Start the engine.
3. Shift into a gear.
4. Release the parking brake.
5. Let up on the brake pedal.
6. Drive slowly until the trailer is clear of the chocks.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/6/16
206 Driving and Operating
7. Stop and have someone pickup and store the chocks.
Maintenance when Trailer
Towing
The vehicle needs service more
often when pulling a trailer. See
Maintenance Schedule 0299.
Things that are especially important
in trailer operation are automatic
transmission fluid, engine oil, axle
lubricant, belts, cooling system, and
brake system. It is a good idea to
inspect these before and during
the trip.
Check periodically to see that all
hitch nuts and bolts are tight.
Trailer Towing
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
{Warning
The driver can lose control when
pulling a trailer if the correct
equipment is not used or the
vehicle is not driven properly. For
example, if the trailer is too heavy
or the trailer brakes are
inadequate for the load, the
vehicle may not stop as expected.
The driver and passengers could
be seriously injured. The vehicle
may also be damaged; the
resulting repairs would not be
covered by the vehicle warranty.
Pull a trailer only if all the steps in
this section have been followed.
Ask your dealer for advice and
information about towing a trailer
with the vehicle.
Caution
Pulling a trailer improperly can
damage the vehicle and result in
costly repairs not covered by the
vehicle warranty. To pull a trailer
correctly, follow the advice in this
section and see your dealer for
important information about
towing a trailer with the vehicle.
To identify the trailering capacity of
the vehicle, read the information in
“Weight of the Trailer” following.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/6/16
Driving and Operating 211
the driver door, or seeVehicle Load
Limits 0172. Make sure not to go
over the GVW limit for the vehicle,
or the GAWR, including the weight
of the trailer tongue. If using a
weight distributing hitch, make sure
not to go over the rear axle limit
before applying the weight
distribution spring bars.
Towing Equipment
Hitches
The correct hitch equipment helps
maintain combination control. Many
trailers can be towed with a
weight-carrying hitch which simply
features a coupler latched to the
hitch ball, or a tow eye latched to a
pintle hook. Other trailers may
require a weight-distributing hitch
that uses spring bars to distribute
the trailer tongue weight among the
two vehicle and trailer axles. See
“Weight of the Trailer Tongue” under
Trailer Towing 0206 for rating limits
with various hitch types. Consider using sway controls with
any trailer. Ask a trailering
professional about sway controls or
refer to the trailer manufacturer's
recommendations and instructions.
Weight-Distributing Hitches
and Weight Carrying Hitches
A weight distributing hitch may be
useful with some trailers. Use the
following guidelines to determine if a
weight distributing hitch should
be used.
1. Front of Vehicle
2. Body to Ground Distance
When using a weight-distributing
hitch, the hitch must be adjusted so
the distance (2) remains the same
both before and after coupling the
trailer to the tow vehicle.
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 lb) must be
equipped with its own brake system,
with brakes working on all axles.
Trailer braking equipment
conforming to Canadian Standards
Association (CSA) requirement
CAN3-D313, or its equivalent, is
recommended.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/6/16
212 Driving and Operating
State and local regulations may also
require the trailer to have its own
braking system if loaded above a
certain threshold.
Be sure to read and follow the
instructions for the trailer brakes so
they are installed, adjusted, and
maintained properly.
Do not tap into the vehicle's
hydraulic brake system.
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.
Use only a round, seven-wire
connector with flat blade terminals
meeting SAE J2863 specifications
for proper electrical connectivity.
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 * 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.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9967828) -
2017 - crc - 5/2/16
Vehicle Care 215
Vehicle Care
General Information
General Information . . . . . . . . . . 216
California Proposition65 Warning . . . . . . . . . . . . . . . . . 216
California Perchlorate Materials Requirements . . . . . 216
Accessories and Modifications . . . . . . . . . . . . . . . . 217
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 217
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 218
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 219
Engine Oil . . . . . . . . . . . . . . . . . . . . 220
Engine Oil Life System . . . . . . . 222
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 223
Engine Air Cleaner/Filter . . . . . . 226
Cooling System . . . . . . . . . . . . . . 227
Engine Coolant . . . . . . . . . . . . . . . 228
Engine Overheating . . . . . . . . . . 231
Engine Fan . . . . . . . . . . . . . . . . . . . 232
Power Steering Fluid . . . . . . . . . 233
Washer Fluid . . . . . . . . . . . . . . . . . 234
Brakes . . . . . . . . . . . . . . . . . . . . . . . 234
Brake Fluid . . . . . . . . . . . . . . . . . . . 235 Battery - North America . . . . . . 236
Rear Axle . . . . . . . . . . . . . . . . . . . . 237
Noise Control System . . . . . . . . 238
Starter Switch Check . . . . . . . . . 239
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 239
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 240
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 240
Wiper Blade Replacement . . . . 240Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 241
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 241
Halogen Bulbs . . . . . . . . . . . . . . . . 241
Headlamps . . . . . . . . . . . . . . . . . . . 242
Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . . . . 243
Taillamps . . . . . . . . . . . . . . . . . . . . . 244
Center High-Mounted Stoplamp (CHMSL) . . . . . . . . . 245
License Plate Lamp . . . . . . . . . . 245
Replacement Bulbs . . . . . . . . . . . 246
Electrical System
Electrical System Overload . . . 246
Fuses and Circuit Breakers . . . 247 Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 247
Floor Console Fuse Block . . . . 250
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 253
All-Season Tires . . . . . . . . . . . . . . 254
Winter Tires . . . . . . . . . . . . . . . . . . 254
All-Terrain Tires . . . . . . . . . . . . . . . 254
Tire Sidewall Labeling . . . . . . . . 255
Tire Designations . . . . . . . . . . . . . 257
Tire Terminology and Definitions . . . . . . . . . . . . . . . . . . 258
Tire Pressure . . . . . . . . . . . . . . . . . 261
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 262
Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . . 263
Tire Inspection . . . . . . . . . . . . . . . . 266
Tire Rotation . . . . . . . . . . . . . . . . . 267
Dual Tire Rotation . . . . . . . . . . . . 268
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 268
Buying New Tires . . . . . . . . . . . . . 269
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 271
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 271
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 273
Wheel Replacement . . . . . . . . . . 273