2014 GMC SIERRA fuel pressure

Black plate (4,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
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 10-37.
.Check tire inflation pressures.
See Tire Pressure on
page 10-61.
.Inspect tire wear. See Tire
Inspection on page 10-66.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10-17.
.Inspect brake system.
.Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear
at least once a year. See
Exterior Care on page 10-96. Lubricate the suspension and
steering components at least
every other oil
change. (If equipped with grease
fittings)
.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 10-36.
.Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check on
page 10-36.
.Check ignition transmission lock.
See Ignition Transmission Lock
Check on page 10-37.
.Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check on
page 10-37.
.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 2-23.
.Verify spare tire key lock
operation and lubricate as
needed. See Tire Changing on
page 10-78.

Black plate (6,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
11-6 Service and Maintenance
Footnotes—Maintenance
Schedule Additional Required
Services —Normal
(1) Or every two years, whichever
comes first. More frequent
replacement may be needed if the
vehicle is driven in areas with heavy
traffic, areas with poor air quality,
or areas with high dust levels.
Replacement may also be needed if
there is a reduction in air flow,
excessive window fogging, or odors.
(2) Check all fuel and vapor lines
and hoses for proper hook-up,
routing, and condition.
(3) Or every four years, whichever
comes first.
(4) Do not directly power wash the
transfer case output seals. High
pressure water can overcome the
seals and contaminate the transfer
case fluid. Contaminated fluid will
decrease the life of the transfer
case and should be replaced. (5)
Or every five years, whichever
comes first. See Cooling System on
page 10-19.
(6) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(7) Or every 10 years, whichever
comes first.

Black plate (8,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
11-8 Service and Maintenance
Footnotes—Maintenance
Schedule Additional Required
Services —Severe
(1) Or every two years, whichever
comes first. More frequent
replacement may be needed if the
vehicle is driven in areas with heavy
traffic, areas with poor air quality,
or areas with high dust levels.
Replacement may also be needed if
there is a reduction in air flow,
excessive window fogging, or odors.
(1) Check all fuel and vapor lines
and hoses for proper hook-up,
routing, and condition.
(2) Or every four years, whichever
comes first.
(3) Do not directly power wash the
transfer case output seals. High
pressure water can overcome the
seals and contaminate the transfer
case fluid. Contaminated fluid will
decrease the life of the transfer
case and should be replaced. (4)
Extreme service. For vehicles
mainly driven off-road in four-wheel
drive or used in farming, mining,
forestry, Department of Natural
Resources (DNR), or snow plowing.
(5) Or every five years, whichever
comes first. See Cooling System on
page 10-19.
(6) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(7) Or every 10 years, whichever
comes first.Special Application
Services
.Vehicles with Dual Wheels:
Check dual wheel nut torque at
160, 1 600 and 10 000 km
(100, 1,000 and 6,000 mi) of
driving. Repeat this service
whenever a tire/wheel is
serviced or removed.
.Severe Commercial Use
Vehicles Only: Lubricate chassis
components every 5 000 km/
3,000 mi.
.Have underbody flushing service
performed. See “Underbody
Maintenance” inExterior Care
on page 10-96.

Black plate (4,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
14-4 OnStar
OnStar Mobile App
Download the OnStar RemoteLink
mobile app to select Apple
®,
Android™, and BlackBerry®devices
to check vehicle fuel level, oil life,
or tire pressure; to start the vehicle
(if equipped) or unlock it; or to
connect to an OnStar Advisor. For
OnStar RemoteLink information and
compatibility, see www.onstar.com
(U.S.) or www.onstar.ca (Canada).
Hands-Free Calling
1. Press=. System responds:
“OnStar ready.”
2. Say “Call.”System responds:
“Please say the name or number
to call.”
3. Say the entire number without pausing, including a “1”and the
area code. System responds:
“OK calling.”
Calling 911 Emergency
1. Press=. System responds:
“OnStar ready,” followed by
a tone.
2. Say “Call.”System responds:
“Please say the name or number
to call.”
3. Say “911”without pausing.
System responds: “911.”
4. Say “Call.”System responds:
“OK, dialing 911.”
Retrieve My Number
1. Press=. System responds:
“OnStar ready.”
2. Say “My number.” System
responds: “Your OnStar
Hands-Free Calling number is,”
then says the number.
End a Call
Press=. System responds: “Call
ended.”
Store a Name Tag for Speed
Dialing
1. Press=. System responds:
“OnStar ready.”
2. Say “Store.” System responds:
“Please say the number you
would like to store.”
3. Say the entire number without pausing. System responds:
“Please say the name tag.”
4. Pick a name tag. System responds: “About to store tag>. Does that sound OK?”
5. Say “Yes”or say “No”to try
again. System responds: “OK,
storing .”
Place a Call Using a Stored
Number
1. Press=. System responds:
“OnStar ready.”
2. Say “Call .” System
responds: “OK, calling
.”

Black plate (4,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
i-4 INDEX
Distracted Driving . . . . . . . . . . . . . . . 9-2
Dome Lamps . . . . . . . . . . . . . . . . . . . 6-7
DoorAjar Messages . . . . . . . . . . . . . . . 5-36
Delayed Locking . . . . . . . . . . . . . . . 2-9
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Power Locks . . . . . . . . . . . . . . . . . . . 2-8
Drive Belt Routing, Engine . . . . . 12-5
Driver Assistance Systems . . . . 9-60
Driver Information Center (DIC) . . . . . . . . . . . 5-30, 5-32
Driving Assistance Systems . . . . . . . . . . 9-64
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 9-74
Defensive . . . . . . . . . . . . . . . . . . . . . . 9-3
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
For Better Fuel Economy . . . . . 1-29
Highway Hypnosis . . . . . . 9-11, 9-12
Hill and Mountain Roads . . . . . . 9-12
If the Vehicle is Stuck . . . . . . . . . 9-14
Loss of Control . . . . . . . . . . . . . . . . 9-5
Off-Road . . . . . . . . . . . . . . . . . . . . . . 9-6
Off-Road Recovery . . . . . . . . . . . . 9-5 Driving (cont'd)
Vehicle Load Limits . . . . . 9-15, 9-16
Wet Roads . . . . . . . . . . . . . . . . . . . 9-11
Winter . . . . . . . . . . . . . . . . . . 9-12, 9-13
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 8-5
Dual Tire Rotation . . . . . . . . . . . . . . . . . . . . 10-69
E
E85 or FlexFuel . . . . . . . . . 9-70, 9-71
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . 9-99
Electrical System Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-43
Fuses . . . . . . . . . . . . . . . . . . . . . . 10-43
Instrument Panel Fuse Block . . . . . . . . . 10-47, 10-49
Overload . . . . . . . . . . . . . . . . . . . 10-42
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2 Engine
Air Cleaner/Filter . . . . . . . . . . . 10-17
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 5-22
Compartment Overview . . . . . . . 10-5
Coolant . . . . . . . . . . . . . . . . . . . . . 10-20
Coolant Heater . . . . . . . . . . . . . . . 9-29
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-16
Cooling System . . . . . . . . . . . . . 10-19
Cooling System Messages . . . 5-37
Drive Belt Routing . . . . . . . . . . . . 12-5
Exhaust . . . . . . . . . . . . . . . . 9-32, 9-33
Fan . . . . . . . . . . . . . . . . . . . . . . . . . 10-26
Oil Life System . . . . . . . . . . . . . 10-13
Oil Messages . . . . . . . . . . . . . . . . . 5-37
Oil Pressure Gauge . . . . . . . . . . 5-15
Overheated Protection Operating Mode . . . . . . . . . . . 10-25
Overheating . . . . . . . . . . . . . . . . 10-23
Power Messages . . . . . . . . . . . . . 5-38
Running While Parked . . . . . . . . . . . . . . . . 9-33, 9-34
Starting . . . . . . . . . . . . . . . . . 9-26, 9-27
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-8
Equipment, Towing . . . . . . . . . . . . 9-89

Black plate (5,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
INDEX i-5
Event Data Recorders . . . . . . . . 13-14
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-8
Extender, Safety Belt . . . . . . . . . . 3-20
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-2
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . 10-26
Fast Idle System . . . . . . . . . . . . . . . 9-28
Features Memory . . . . . . . . . . . . . . . . . . . . . . . 1-10
Filter,
Engine Air Cleaner . . . . . . . . . 10-17
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-3
Flashers, Hazard Warning . . . . . . 6-4
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-76 Changing . . . . . . . . . . . . . . . . . . . 10-78
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . 9-70, 9-71
Floor Console Storage . . . . . . . . . . 4-4
Floor Mats . . . . . . . . . . . . . . . . . . .10-104 Fluid
Automatic Transmission . . . . 10-14
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-29
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 9-39
Power Steering . . . . . . . . . . . . . 10-26
Washer . . . . . . . . . . . . . . . . . . . . . 10-27
Fog Lamps Bulb Replacement . . . . . . 6-5, 10-40
Folding Mirrors . . . . . . . . . . . . . . . . 2-15
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . 9-64
Four-Wheel Drive . . . . . . . . . . . . 9-39, 10-32, 9-39
Four-Wheel-Drive Light . . . . . . . . 5-25
Front Axle . . . . . . . . . . . . . . . . . . . . 10-33
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . 3-3
Heated and Cooled . . . . . . . . . . . . 3-8
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-68 Additives . . . . . . . . . . . . . . . . . . . . . 9-70
Economy Driving . . . . . . . . . . . . . 1-29
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-73 Fuel (cont'd)
Filling the Tank . . . . . . . . . 9-71, 9-72
Foreign Countries . . . . . . . . . . . . 9-70
Gasoline Specifications . . . . . . . 9-70
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Low Fuel Warning Light . . . . . . . 5-28
Management, Active . . . . . . . . . . 9-32
Requirements, California . . . . . 9-70
System Messages . . . . . . . . . . . . 5-38
Full-Size Spare Tire . . . . . . . . . . 10-88
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 10-43 Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-43
Instrument Panel
Fuse Block . . . . . . . . . 10-47, 10-49
G
Garage Door Opener . . . . . . . . . . 5-52Programming . . . . . . . . . . . . . . . . . 5-52
Gasoline
Specifications . . . . . . . . . . . . . . . . . 9-70
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 5-16
Engine Oil Pressure . . . . . . . . . . 5-15
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Black plate (7,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
INDEX i-7
J
JackAuxiliary . . . . . . . . . . . . . . . . . . . . . . 7-22
Jump Starting . . . . . . . . . . . . . . . . . 10-89
K
Key and Lock Messages . . . . . . . 5-39
Keyless Entry Remote (RKE) System . . . . . . . . 2-3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
L
Labeling, Tire Sidewall . . . . . . . . 10-54
Lamps Auxiliary Roof
Mounted Lamp . . . . . . . . . . . . . . . 6-6
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . . . . . . . . . . . . . . . . . . 6-2
License Plate . . . . . . . . . . . . . . . 10-42
Malfunction Indicator . . . . . . . . . 5-22
Messages . . . . . . . . . . . . . . . . . . . . 5-39 Lamps (cont'd)
On Reminder . . . . . . . . . . . . . . . . . 5-29
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-7
Taillamps . . . . . . . . . . . . . . . . . . . 10-40
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . 9-66
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . 3-19
Lap-Shoulder Belt . . . . . . . . . . . . . 3-14
LATCH System
Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 3-58
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . 3-46
LED Lighting . . . . . . . . . . . . . . . . . . 10-39
Light Hill Decent Control . . . . . . . . . . . 5-26
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Illumination Control . . . . . . . . . . . . 6-6
LED . . . . . . . . . . . . . . . . . . . . . . . . 10-39 Lights
Airbag On-Off . . . . . . . . . . . . . . . . . 5-18
Airbag Readiness . . . . . . . . . . . . . 5-18
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 5-25
Brake System Warning . . . . . . . 5-24
Charging System . . . . . . . . . . . . . 5-21
Cruise Control . . . . . . . . . . . . . . . . 5-30
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
Four-Wheel-Drive . . . . . . . . . . . . . 5-25
Front Fog Lamp . . . . . . . . . . . . . . 5-29
High-Beam On . . . . . . . . . . . . . . . . 5-29
High/Low Beam Changer . . . . . . 6-2
Lane Departure Warning . . . . . . 5-26
Low Fuel Warning . . . . . . . . . . . . 5-28
Safety Belt Reminders . . . . . . . . 5-17
Security . . . . . . . . . . . . . . . . . . . . . . 5-29
StabiliTrak
®OFF . . . . . . . . . . . . . 5-27
Tire Pressure . . . . . . . . . . . . . . . . . 5-28
Tow/Haul Mode . . . . . . . . . . . . . . . 5-26
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 5-27
Traction Off . . . . . . . . . . . . . . . . . . . 5-27
Locking Rear Axle . . . . . . . . . . . . . 9-57

Black plate (8,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
i-8 INDEX
LocksAutomatic Door . . . . . . . . . . . . . . . . 2-9
Delayed Locking . . . . . . . . . . . . . . . 2-9
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Lockout Protection . . . . . . . . . . . . . 2-9
Power Door . . . . . . . . . . . . . . . . . . . . 2-8
Safety . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Loss of Control . . . . . . . . . . . . . . . . . 9-5
Low Fuel Warning Light . . . . . . . . 5-28
Low-Profile Tires . . . . . . . . . . . . . . 10-53
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . 3-46
Lumbar Adjustment . . . . . . . . . . . . . 3-4 Front Seats . . . . . . . . . . . . . . . . . . . . 3-4
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . .11-16
Maintenance Schedule Recommended Fluidsand Lubricants . . . . . . . . . . . . .11-12
Transfer Case . . . . . . . . . . . . . . . . 9-39
Malfunction Indicator Lamp . . . . 5-22
Manual Mirrors . . . . . . . . . . . . . . . . 2-14
Manual Mode . . . . . . . . . . . . . . . . . . 9-37 Manual Windows . . . . . . . . . . . . . . 2-19
Memory Features . . . . . . . . . . . . . . 1-10
Memory Seats . . . . . . . . . . . . . . . . . . 3-6
Messages
Airbag System . . . . . . . . . . . . . . . . 5-41
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 5-35
Brake System . . . . . . . . . . . . . . . . 5-36
Compass . . . . . . . . . . . . . . . . . . . . . 5-36
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-36
Engine Cooling System . . . . . . . 5-37
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-37
Engine Power . . . . . . . . . . . . . . . . 5-38
Fuel System . . . . . . . . . . . . . . . . . . 5-38
Key and Lock . . . . . . . . . . . . . . . . . 5-39
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
Object Detection System . . . . . 5-39
Ride Control System . . . . . . . . . . 5-40
Security . . . . . . . . . . . . . . . . . . . . . . 5-41
Steering System . . . . . . . . . . . . . . 5-41
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42
Transmission . . . . . . . . . . . . . . . . . 5-42
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-35
Vehicle Reminder . . . . . . . . . . . . . 5-44
Vehicle Speed . . . . . . . . . . . . . . . . 5-45
Washer Fluid . . . . . . . . . . . . . . . . . 5-45 Mirrors
Automatic Dimming . . . . . . . . . . . 2-17
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . 2-19
Blind Spot . . . . . . . . . . . . . . . . . . . . 2-17
Convex . . . . . . . . . . . . . . . . . . . . . . . 2-14
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-15
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-16
Manual . . . . . . . . . . . . . . . . . . . . . . . 2-14
Manual Rearview . . . . . . . . . . . . . 2-18
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Tilt in Reverse . . . . . . . . . . . . . . . . 2-18
Trailer Tow . . . . . . . . . . . . . . . . . . . . 2-14
Mirrors, Interior Rearview . . . . . . 2-18
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . 10-62
Multi-band Antenna . . . . . . . . . . . . 7-12N
Navigation OnStar®. . . . . . . . . . . . . . . . . . . . . . 14-2
New Vehicle Break-In . . . . 9-23, 9-24
Noise Control System . . . . . . . . 10-35