fuel additives CHEVROLET SILVERADO 2020 Owner's Manual

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13337620) - 2020 - CTC - 1/27/20
Driving and Operating 183
Lane Change Alert (LCA)(1500 Series) . . . . . . . . . . . . . . . 270
Lane Departure Warning (LDW) (2500/3500
Series) . . . . . . . . . . . . . . . . . . . . . . 272
Lane Keep Assist (LKA) (1500 Series) . . . . . . . . . . . . . . . . . . . . . . 274
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . 276
Recommended Fuel (Except6.2L V8 Engine) . . . . . . . . . . . . . 276
Recommended Fuel (6.2L V8 Engine) . . . . . . . . . . . . . . . . . . 277
Prohibited Fuels . . . . . . . . . . . . . . 277
Fuels in Foreign Countries . . . 277
Fuel Additives . . . . . . . . . . . . . . . . 278
E85 or FlexFuel . . . . . . . . . . . . . . 278
Filling the Tank (Pickup Model) . . . . . . . . . . . . . . . . . . . . . . 279
Filling the Tank (Chassis Cab Model) . . . . . . . . . . . . . . . . . . . . . . 281
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 282
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 283
Driving Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 283
Trailer Towing . . . . . . . . . . . . . . . . 288 Towing Equipment . . . . . . . . . . . . 292
Trailer Sway Control (TSC) . . . 304
Trailering App . . . . . . . . . . . . . . . . 306
Conversions and Add-Ons
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . 318
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . . . . . . 319
Pickup Conversion to Chassis Cab . . . . . . . . . . . . . . . . 322
Driving Information
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible:
. Set the climate controls to the
desired temperature after the
engine is started, or turn them
off when not required.
. Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid
abrupt stops.
. Avoid idling the engine for long
periods of time.
. When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed
limits or drive more slowly when
conditions require.
. Keep vehicle tires properly
inflated.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13337620) - 2020 - CTC - 1/27/20
278 Driving and Operating
Fuel Additives
TOP TIER Detergent Gasoline is
highly recommended for use with
your vehicle. If your country does
not have TOP TIER Detergent
Gasoline, add ACDelco Fuel
System Treatment Plus−Gasoline to
the vehicle’s gasoline fuel tank at
every oil change or 15 000 km
(9,000 mi), whichever occurs first.
TOP TIER Detergent Gasoline and
ACDelco Fuel System Treatment
Plus−Gasoline will help keep your
vehicle’s engine fuel deposit free
and performing optimally.
E85 or FlexFuel
Vehicles with a yellow fuel sticker
on the fuel door can use either
unleaded gasoline or fuel containing
up to 85% ethanol (E85). All other
vehicles should use only the
unleaded gasoline as described in
Recommended Fuel (Except 6.2L
V8 Engine) 0276 or
Recommended Fuel (6.2L
V8 Engine) 0277. The use of E85 or FlexFuel is
encouraged when the vehicle is
designed to use it. E85 or FlexFuel
is made from renewable sources.
To help locate fuel stations that
carry E85 or FlexFuel, the U.S.
Department of Energy has an
alternative fuel website. See
www.afdc.energy.gov/afdc/locator/
stations.
E85 or FlexFuel should meet ASTM
Specification D 5798 or CAN/
CGSB–3.512 in Canada. Do not use
the fuel if the ethanol content is
greater than 85%. Fuel mixtures that
do not meet ASTM or CGSB
specifications can affect driveability
and could cause the malfunction
indicator lamp to come on.
The starting characteristics of E85
or FlexFuel make it unsuitable for
use when temperatures fall below
−18 °C (0 °F). Use gasoline or add
gasoline to the E85 or FlexFuel.
Because E85 or FlexFuel has less
energy per liter (gallon) than
gasoline, the vehicle will need to be refilled more often. See
Filling the
Tank (Pickup Model) 0279 or
Filling the Tank (Chassis Cab
Model) 0281.
The only GM approved aftermarket
additive is ACDelco Fuel System
Treatment Plus-FlexFuel. Follow the
instructions on the bottle for proper
use. This product is available at
your GM dealer.
Caution
Some additives are not
compatible with E85 or FlexFuel
and can harm the vehicle's fuel
system. Use only additives
approved by GM for E85 or
FlexFuel vehicles. Damage
caused by unapproved additives
would not be covered by the
vehicle warranty.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13337620) - 2020 - CTC - 1/27/20
Index 485
Engine (cont'd)Power Messages . . . . . . . . . . . . . 153
Running While Parked . . . . . . . . 217
Starting . . . . . . . . . . . . . . . . . . . . . . . 209
Engine Air Filter Life System . . . . 339
Entry Lighting . . . . . . . . . . . . . . . . . . . 171
Equipment, Towing . . . . . . . . . . . . . 292
Event Data Recorders . . . . . . . . . . 470
Exit Lighting . . . . . . . . . . . . . . . . . . . . 171
Extended Parking . . . . . . . . . . . . . . . 216
Extender, Seat Belt . . . . . . . . . . . . . . 68
Exterior Cargo Lamps . . . . . . . . . . 169
Exterior Lamp Controls . . . . . . . . . 162
Exterior Lamps Off Reminder . . . 164
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 172
F
Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 349
Filter, Engine Air Cleaner . . . . . . . . . . . 340
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 165
Flashers, Hazard Warning . . . . . . 166
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 401 Changing . . . . . . . . . . . . . . . . . . . . . 402
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 Floor Console Storage . . . . . . . . . . 112
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 433
Fluid
Automatic Transmission . . . . . . 339
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 353
Four-Wheel DriveTransfer Case . . . . . . . . . . . . . . . 223
Power Steering . . . . . . . . . . . . . . . 350
Washer . . . . . . . . . . . . . . . . . . . . . . . 350
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 167
Folding Mirrors . . . . . . . . . . . . . . . . . . 40
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 264
Four-Wheel Drive . . . . . . . . . . 223, 356
Four-Wheel-Drive Light . . . . . . . . . 138
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 468
Front Axle . . . . . . . . . . . . . . . . . . . . . . 357
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Front Pedestrian Braking
(FPB) System . . . . . . . . . . . . . . . . . 268
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 52
Heated and Ventilated . . . . . . . . . . 58
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 278
Economy, Driving for Better . . . 183 Fuel (cont'd)
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 282
Filling the Tank . . . . . . . . . . 279, 281
Foreign Countries . . . . . . . . . . . . 277
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 129
Low Fuel Warning Light . . . . . . . 143
Management, Active . . . . . . . . . . 215
Prohibited Fuels . . . . . . . . . . . . . . 277
Recommended . . . . . . . . . . 276, 277
Top Tier . . . . . . . . . . . . . . . . . . . . . . 276
Full-Size Spare Tire . . . . . . . . . . . . 414
Fuses
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 367
Fuses and Circuit Breakers . . . 366
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 370, 372
G
Garage Door Opener . . . . . . . . . . . 158Programming . . . . . . . . . . . . . . . . . 158
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 361
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 131
Engine Oil Pressure . . . . . . . . . . 130
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 129