check transmission fluid CHEVROLET SILVERADO 2018 User Guide

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349200) - 2018 - CRC - 2/27/18
Vehicle Care 351
reason for fluid loss. If a leak
occurs, take the vehicle to your
dealer service department and have
it repaired as soon as possible. See
Recommended Fluids and
Lubricants0451 for the proper fluid
to use.
Hydraulic Clutch
For vehicles with a manual
transmission, it is not necessary to
regularly check clutch fluid unless
you suspect there is a leak in the
system. Adding fluid will not correct
a leak. A fluid loss in this system
could indicate a problem. Have the
system inspected and repaired.
When to Check and What
to Use
The hydraulic clutch fluid reservoir
cap has this symbol on it. See
Engine Compartment Overview
0 338 for reservoir location.
Refer to Recommended Fluids and
Lubricants 0451 for the proper fluid
to use. The fluid requires changing.
See Maintenance Schedule 0443.
How to Check and Add Fluid
Visually check the clutch fluid
reservoir. The hydraulic clutch fluid
system should be closed and
sealed.
Do not remove the cap to check the
fluid level or to top-off the fluid level.
Remove the cap only when
necessary to add the proper fluid.
Engine Air Cleaner/Filter
If the vehicle has a diesel engine,
see “8-Cylinder Pickup Models”
under “Engine Air Cleaner/Filter” in
the Duramax diesel supplement for
the correct inspection and
replacement procedures. The engine air cleaner/filter is on
the passenger side of the engine
compartment. See
Engine
Compartment Overview 0338.
When to Inspect the Engine Air
Cleaner/Filter
For intervals on changing and
inspecting the engine air filter, see
Maintenance Schedule 0443.
How to Inspect the Engine Air
Cleaner/Filter
Do not start the engine or have the
engine running with the engine air
cleaner/filter housing open. Before
removing the engine air cleaner/
filter, make sure that the engine air
cleaner/filter housing and nearby
components are free of dirt and
debris. Remove the engine air
cleaner/filter. Lightly tap and shake
the engine air cleaner/filter (away
from the vehicle), to release loose
dust and dirt. Inspect the engine air
cleaner/filter for damage, and
replace if damaged. Do not clean
the engine air cleaner/filter or
components with water or
compressed air.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349200) - 2018 - CRC - 2/27/18
444 Service and Maintenance
.Check tire inflation pressures.
See Tire Pressure 0392.
. Inspect tire wear. See Tire
Inspection 0399.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 351.
. Inspect brake system. See
Exterior Care 0430.
. Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of
wear. See Exterior Care 0430.
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 075. .
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 0430.
. Check starter switch. See Starter
Switch Check 0367.
. Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check
0368.
. Check ignition transmission lock.
See Ignition Transmission Lock
Check 0368.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check
0 368. .
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. If the hold
open is low, service the gas
strut. See Gas Strut(s) 0370.
. Inspect sunroof track and seal,
if equipped. See Sunroof055.
. Verify spare tire key lock
operation and lubricate as
needed. See Tire Changing
0 410.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349200) - 2018 - CRC - 2/27/18
Service and Maintenance 447
Maintenance Schedule
Additional Required
Services - Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Replace engine air cleaner filter. (2)@ @@
Inspect evaporative control system. (3)@@@
Replace spark plugs. Inspect spark plug wires.@
Change automatic transmission fluid and filter.@@@
For GVW under 3 900 kg (8,600 lb), change
transfer case fluid, if equipped with 4WD. (4)@@@
For GVW over 3 900 kg (8,600 lb), change
transfer case fluid, if equipped with 4WD. (4)@@@@@@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
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, poor air quality, areas with
high dust levels or are sensitive to
environmental allergens. Filter
replacement may also be needed if
you notice reduced airflow, windows
fogging up, or odors. Your local GM
Service location can help you
determine when it is the right time to
replace your filter.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349200) - 2018 - CRC - 2/27/18
488 Index
Antilock Brake System(ABS) (cont'd)
Warning Light . . . . . . . . . . . . . . . . . 150
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . . . 430
Interior . . . . . . . . . . . . . . . . . . . . . . . . 436
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . . . 209
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . . 465
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 285
Assistance Systems for
Parking and Backing . . . . . . . . . . 282
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . 196
Theft-Deterrent Feature . . . . . . . 182
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 50
Door Locks . . . . . . . . . . . . . . . . . . . . . 41
Forward Braking . . . . . . . . . . . . . . 287
Headlamp System . . . . . . . . . . . . 174
Transmission . . . . . . . . . . . . . . . . . 257
Transmission Fluid . . . . . . 347, 350
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 260
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 368 Auxiliary
Roof Mounted Lamp . . . . . . . . . . 176
Auxiliary Jack . . . . . . . . . . . . . . . . . . . 195
Avoiding Untrusted Media Devices . . . . . . . . . . . . . . . . . . . . . . . 190
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 364
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 365
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 180
Load Management . . . . . . . . . . . . 179
Power Protection . . . . . . . . . . . . . 180
Battery - North America . . . . 362, 421
Blade Replacement, Wiper . . . . . 369
Blind Spot Mirrors . . . . . . . . . . . . . . . 50
Bluetooth Overview . . . . . . . . . . . . . . . . 203, 205
Bluetooth Audio . . . . . . . . . . . . . . . . 196
Brake Pedal and AdjustableThrottle . . . . . . . . . . . . . . . . . . . . . . 247
System Warning Light . . . . . . . . 149
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 360 Antilock . . . . . . . . . . . . . . . . . . . . . . . 273
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 275
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 361 Brakes (cont'd)
Parking . . . . . . . . . . . . . . . . . . . . . . . 273
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 228 Automatic Forward . . . . . . . . . . . 287
Break-In, New Vehicle . . . . . . . . . . 247
Bulb Replacement Center High-MountedStoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 375
Fog Lamps . . . . . . . . . . . . . . . . . . . 373
Halogen Bulbs . . . . . . . . . . . . . . . . 371
Headlamp Aiming . . . . . . . . . . . . . 371
Headlamps . . . . . . . . . . . . . . . . . . . 371
Headlamps, Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 372
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 371
Taillamps . . . . . . . . . . . . . . . . . . . . . 373
Taillamps, Turn Signal, Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 373
Buying New Tires . . . . . . . . . . . . . . . 403
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 131
California Fuel Requirements . . . . . . . . . . . 293

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349200) - 2018 - CRC - 2/27/18
494 Index
Manual Transmission . . . . . . . . . . . 263Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Manual Windows . . . . . . . . . . . . . . . . 52
Media Avoiding Untrusted Devices . . 190
Memory Features . . . . . . . . . . . . . . . . 13
Memory Seats . . . . . . . . . . . . . . . . . . . 62
Messages Engine Power . . . . . . . . . . . . . . . . 160
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 159
Vehicle Speed . . . . . . . . . . . . . . . . 160
Mirrors Automatic Dimming . . . . . . . . . . . . . 50
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 52
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 50
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 47
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 49
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 50
Manual . . . . . . . . . . . . . . . . . . . . . . . . . 47
Manual Rearview . . . . . . . . . . . . . . . 52
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Tilt in Reverse . . . . . . . . . . . . . . . . . . 51
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . 48
Mirrors, Interior Rearview . . . . . . . . 51
Monitor System, Tire
Pressure . . . . . . . . . . . . . . . . . . . . . . 394
Multi-band Antenna . . . . . . . . . . . . . 189N
Navigation OnStar . . . . . . . . . . . . . . . . . . . . . . . 477
New Vehicle Break-In . . . . . . . . . . . 247
Noise Control System . . . . . . . . . . 366
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 140 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 231 Driving . . . . . . . . . . . . . . . . . . . . . . . . 231
Recovery . . . . . . . . . . . . . . . . . . . . . 230
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 343
Engine Oil Life System . . . . . . . 346
Engine Oil Pressure Gauge . . . 141
Older Children, Restraints . . . . . . . 92
Online Owner Center . . . . . . . . . . . 464
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 474
OnStar Additional Information . . . . . . . . . . . . . . . . . . . . 481
OnStar Connections . . . . . . . . . . . . 478
OnStar Diagnostics . . . . . . . . . . . . . 480
OnStar Emergency . . . . . . . . . . . . . 476
OnStar Navigation . . . . . . . . . . . . . . 477
OnStar Overview . . . . . . . . . . . . . . . 475
OnStar Security . . . . . . . . . . . . . . . . 477 Operating Mode
Overheated Engine
Protection . . . . . . . . . . . . . . . . . . . 358
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 176
Ordering Service Publications . . . . . . . . . . 470
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 132
Overheated Engine Protection Operating Mode . . . . 358
Overheating, Engine . . . . . . . . . . . . 356
Overview . . . . . . . . . . . . . . . . . . . . . . . 183
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 253
Shifting Out of . . . . . . . . . . . . . . . . 255
Parking . . . . . . . . . . . . . . . . . . . . . . . . . 255 Brake . . . . . . . . . . . . . . . . . . . . . . . . . 273
Brake and P (Park)Mechanism Check . . . . . . . . . . 368
Over Things That Burn . . . . . . . 255
Parking Assist . . . . . . . . . . . . . . . . . . 282
Parking or Backing Assistance Systems . . . . . . . . . . 282
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 146

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349200) - 2018 - CRC - 2/27/18
496 Index
RoofSunroof . . . . . . . . . . . . . . . . . . . . . . . . . 55
Rotation, Tires . . . . . . . . . . . . . . . . . . 400
Routing, Engine Drive Belt . . . . . . 460
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 257
S
Safety Defects ReportingCanadian Government . . . . . . . . 472
General Motors . . . . . . . . . . . . . . . 473
U.S. Government . . . . . . . . . . . . . 472
Safety Locks . . . . . . . . . . . . . . . . . . . . . 42
Safety System Check . . . . . . . . . . . . 75
Satellite Radio . . . . . . . . . . . . . . . . . . 187
Scheduling Appointments . . . . . . . 467
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 69 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Extender . . . . . . . . . . . . . . . . . . . . . . . . 75
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 70
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . 75
Lap-Shoulder Belt . . . . . . . . . . . . . . 71
Reminders . . . . . . . . . . . . . . . . . . . . 143
Replacing after a Crash . . . . . . . . 76
Use During Pregnancy . . . . . . . . . . 74
Seats Adjustment, Front . . . . . . . . . . . . . . . 59 Seats (cont'd)
Center Seat . . . . . . . . . . . . . . . . . . . . 59
Head Restraints . . . . . . . . . . . . . . . . 58
Heated and Ventilated Front . . . . 65
Lumbar Adjustment, Front . . . . . . 60
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 62
Power Adjustment, Front . . . . . . . 60
Rear . . . . . . . . . . . . . . . . . . . . . . . . 66, 68
Reclining Seatbacks . . . . . . . . . . . . 61
Securing Child Restraints . . . . . . . . . . . 111, 114, 115
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 153
OnStar . . . . . . . . . . . . . . . . . . . . . . . 477
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 44
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 44
Service . . . . . . . . . . . . . . . . . . . . . . . . . 225 Accessories and
Modifications . . . . . . . . . . . . . . . . 336
Climate Control System . . . . . . . . . . . . . . . . . 216, 218
Doing Your Own Work . . . . . . . . 337
Maintenance Records . . . . . . . . 455
Maintenance, General Information . . . . . . . . . . . . . . . . . . 441
Parts Identification Label . . . . . 456
Publications Ordering Information . . . . . . . . . . . . . . . . . . 470 Service (cont'd)
Scheduling Appointments . . . . . 467
Services Special Application . . . . . . . . . . . 448
Servicing the Airbag . . . . . . . . . . . . . 90
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 368
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . 253
Out of Park . . . . . . . . . . . . . . . . . . . 255
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 175
Snow Plow . . . . . . . . . . . . . . . . . . . . . 330
Software Updates . . . . . . . . . . . . . . 185
Special Application Services . . . . 448
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 457
Speedometer . . . . . . . . . . . . . . . . . . . 140
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 152
Start Assist, Hill . . . . . . . . . . . . . . . . . 275
Start Vehicle, Remote . . . . . . . . . . . 39
Starter Switch Check . . . . . . . . . . . 367
Starting the Engine . . . . . . . . . . . . . 249
Steering . . . . . . . . . . . . . . . . . . . . . . . . 229 Fluid, Power . . . . . . . . . . . . . . . . . . 359
Heated Wheel . . . . . . . . . . . . . . . . 130