oil additives CHEVROLET SILVERADO 2024 Owners Manual

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/12/22
266 Driving and Operating
Recommended Fuel
For diesel engine vehicles, see“Fuel for
Diesel Engines” in the Duramax diesel
supplement.
If the vehicle has a yellow sticker on the
fuel door, E85 or FlexFuel can be used. If the
vehicle does not have a yellow sticker, do
not use gasoline with ethanol levels greater
than 15% by volume. See E85 or FlexFuel
0 266.
Regular unleaded gasoline meeting ASTM
specification D4814 with a posted octane
rating (R+M)/2 of 87 or greater is
recommended. Do not use gasoline with a
posted octane rating of less than 87, as this
will result in reduced performance and
driveability. If heavy knocking is heard when
using gasoline rated at 87 or greater, the
engine needs service.
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so may
damage the vehicle and void its
warranty:
.For vehicles that are not FlexFuel, fuel
labeled greater than 15% ethanol by
volume, such as mid-level ethanol
blends (16–50% ethanol), E85,
or FlexFuel.
.Fuel with any amount of methanol,
methylal, ferrocene, and aniline. These
fuels can corrode metal fuel system
parts or damage plastic and rubber
parts.
.Fuel containing metals such as
methylcyclopentadienyl manganese
tricarbonyl (MMT), which can damage
the emissions control system and
spark plugs.
.Fuel with a posted octane rating of
less than the recommended fuel. Using
this fuel will lower fuel economy and
performance, and may decrease the
life of the emissions catalyst.
Fuels in Foreign Countries
The U.S., Canada, and Mexico post fuel
octane ratings in anti-knock index (AKI). For
fuel not to use in a foreign country, see
Prohibited Fuels 0266.
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 0266.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
310 Vehicle Care
Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The
recommended oils meeting the dexos1
specification are all that is needed for good
performance and engine protection.
Engine oil system flushes are not
recommended and could cause engine
damage not covered by the vehicle
warranty.
What to Do with Used Oil
Used engine oil contains certain elements
that can be unhealthy for your skin and
could even cause cancer. Do not let used oil
stay on your skin for very long. Clean your
skin and nails with soap and water, or a
good hand cleaner. Wash or properly
dispose of clothing or rags containing used
engine oil. See the manufacturer's warnings
about the use and disposal of oil products.
Used oil can be a threat to the environment.
If you change your own oil, be sure to drain
all the oil from the filter before disposal.
Never dispose of oil by putting it in the
trash or pouring it on the ground, into
sewers, or into streams or bodies of water.
Recycle it by taking it to a place that
collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that
indicates when to change the engine oil and
filter. This is based on a combination of
factors which include engine revolutions,
engine temperature, and miles driven. Based
on driving conditions, the mileage at which
an oil change is indicated can vary
considerably. For the oil life system to work
properly, the system must be reset every
time the oil is changed.
On some vehicles, when the system has
calculated that oil life has been diminished,
a CHANGE ENGINE OIL SOON message comes
on to indicate that an oil change is
necessary. Change the oil as soon as
possible within the next 1 000 km (600 mi).
It is possible that, if driving under the best
conditions, the oil life system might indicate
that an oil change is not necessary for up to
a year. The engine oil and filter must be
changed at least once a year and, at this
time, the system must be reset. For vehicles
without the CHANGE ENGINE OIL SOON
message, an oil change is needed when the
REMAINING OIL LIFE percentage is near 0%.
Your dealer has trained service people whowill perform this work and reset the system.
It is also important to check the oil regularly
over the course of an oil drain interval and
keep it at the proper level.
If the system is ever reset accidentally, the
oil must be changed at 5 000 km (3,000 mi)
since the last oil change. Remember to reset
the oil life system whenever the oil is
changed.
How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is
changed so that the system can calculate
the next engine oil change. Always reset the
engine oil life to 100% after every oil
change. It will not reset itself. To reset the
engine oil life system:
1. Display the oil life percentage on the DIC. See Driver Information Center (DIC)
(Base Level) 0126 orDriver Information
Center (DIC) (Uplevel) 0128.
2. Press the thumbwheel on the steering wheel, or the trip odometer reset stem if
the vehicle does not have DIC controls,
for several seconds. When the
confirmation message displays, select
YES. The oil life will change to 100%.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
422 Index
Engine (cont'd)Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Power Messages . . . . . . . . . . . . . . . . . . . . . . . 134
Running While Parked . . . . . . . . . . . . . . . . . . 217
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 278
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 409
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Extended Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . .32
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . . 217
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . 59
Exterior Cargo Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Lamp Controls . . . . . . . . . . . . . . . . . . . . . . . . . 138
Lamps Off Reminder . . . . . . . . . . . . . . . . . . . 140
Lighting Battery Saver . . . . . . . . . . . . . . . . . 147
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Filter
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 312
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 141
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360 Floor Console
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385
Fluid Automatic Transmission . . . . . . . . . . . . . . . . 311
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . . 317
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Fog Lamp Light Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . 221, 323
Four-Wheel-Drive
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Heated and Ventilated Seats . . . . . . . . . . . . 50
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Economy, Driving for Better . . . . . . . . . . . 193
Filling a Portable Fuel Container . . . . . . . 270
Filling the Tank . . . . . . . . . . . . . . . . . . . 267, 269 Fuel (cont'd)
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 266
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Low Fuel Warning Light . . . . . . . . . . . . . . . 124
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 266
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 266
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 370
Fuses Engine Compartment Fuse Block . . . . . . . 332
Fuses and Circuit Breakers . . . . . . . . . . . . . 332
Instrument Panel Fuse Block . . . . . . . 335, 337
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . .134Programming . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Gauges
Engine Coolant Temperature . . . . . . . . . . . . 113
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 112
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Transmission Temperature . . . . . . . . . . . . . . 114
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Warning Lights and Indicators . . . . . . . . . 106