2018 GMC SIERRA Owner's Manual

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
456 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
This maintenance section applies to vehicles with a gasoline engine. If the vehicle has a diesel engine and/or an
Allison Transmission, see“Recommended Fluids and Lubricants” in the Duramax diesel supplement.
Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.
Usage Fluid/Lubricant
Automatic Transmission (6-Speed Transmission) DEXRON-VI Automatic Transmission Fluid.
Automatic Transmission (8-Speed Transmission) DEXRON-HP Automatic Transmission Fluid (GM Part No. 19331925, in
Canada 19300537).
Chassis Lubrication Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL coolant. SeeCooling System 0359.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 is recommended. See Engine Oil0350.
Floor Shift Linkage Lubriplate Lubricant Aerosol (GM Part No. 89021668, in Canada 89021674) or lubricant meeting requirements of NLGI #2 Category LB or GC-LB.
Front Axle Driveshaft Splines (All
1500/2500/3500 Series) and Rear Axle Driveshaft Splines (All 1500 Series) Spline Lubricant, Special Lubricant (GM Part No. 19257121, in
Canada 19257122).

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Service and Maintenance 457
UsageFluid/Lubricant
Front Axle –Four-Wheel Drive SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in
Canada 89021678).
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19299819).
Hydraulic Power Steering System (2500/3500 Series Only) GM Power Steering Fluid (GM Part No. 19329450, in Canada 19329451).
Key Lock Cylinders, Hood Hinges, Body Door Hinge Pins, Tailgate
Hinge and Linkage, Fuel Door Hinge,
Tailgate Handle Pivot Points, Hinges, Latch Bolt, and Linkage Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Rear Axle (1500 Series) SAE 75W-85 Synthetic Axle Lubricant (GM Part No. 19300457, in Canada 19300458).
Rear Axle (2500/3500 Series) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in Canada 89021678).
Transfer Case (Four-Wheel Drive) DEXRON-VI Automatic Transmission Fluid.
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or Dielectric Silicone Grease (GM Part No. 12345579, in Canada 10953481).
Weatherstrip Squeaks Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in Canada 10953437).
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
458 Service and Maintenance
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
If your vehicle has a diesel engine, see the Duramax diesel supplement for more information.Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter 22845992 A3181C
Oil Filter 4.3L V6 19330000 PF63E
5.3L V8; 6.2L V8 19330000 PF63E
6.0L V8 19303975 PF48E
Passenger Compartment Air Filter 23281440 CF188
Spark Plugs 4.3L V6 12622441 41–114
5.3L V8; 6.2L V8 12622441 41–114
6.0L V8 12621258 41–110
Wiper Blades
Driver Side –55 cm (21.7 in) 23417074 -
Passenger Side –55 cm (21.7 in) 23417074 -

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Service and Maintenance 459
Maintenance Records
After the scheduled services are performed, record the date, odometer reading, who performed the service, and the
type of services performed in the boxes provided. Retain all maintenance receipts.Date Odometer
Reading Serviced By Services Performed

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
460 Technical Data
Technical Data
Vehicle Identification
Vehicle IdentificationNumber (VIN) . . . . . . . . . . . . . . . 460
Service Parts Identification Label . . . . . . . . . . . . . . . . . . . . . . . . 460
Vehicle Data
Capacities andSpecifications . . . . . . . . . . . . . . . 461
Engine Drive Belt Routing . . . . 464
Vehicle Identification
Vehicle Identification
Number (VIN)
This legal identifier is in the front
corner of the instrument panel, on
the driver side of the vehicle. It can
be seen through the windshield from
outside. The Vehicle Identification
Number (VIN) also appears on the
Vehicle Certification and Service
Parts labels and certificates of title
and registration.
Engine Identification
The eighth character in the VIN is
the engine code. This code
identifies the vehicle's engine,
specifications, and replacement parts. See
“Engine Specifications”
under Capacities and Specifications
0 461 for the vehicle's engine code.
Service Parts
Identification Label
There may be a label on the inside
of the glove box that contains the
following information:
.
Vehicle Identification
Number (VIN)
. Model designation
. Paint information
. Production options and special
equipment
If there is no label, there is a
barcode on the certification label on
the center (B) pillar to scan for this
same information.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Technical Data 461
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and
Lubricants 0456.
If the vehicle has a diesel engine, see the Duramax diesel supplement.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under thehood. See your dealer for more information.
Cooling System
4.3L V6 1500 Series 15.1 L 15.9 qt
5.3L V8 1500 Series (L83) 16.0 L 16.9 qt
6.0L V8 2500 Series and 3500 Series 16.1 L 17.0 qt
6.2L V8 1500 Series 15.7 L 16.6 qt
Engine Oil with Filter 4.3L V6 5.7 L 6.0 qt
5.3L V8; 6.2L V8 7.6 L 8.0 qt
6.0L V8 5.7 L 6.0 qt

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
462 Technical Data
ApplicationCapacities
Metric English
Fuel Tank
1500 Series Standard and Short Box 98.4 L 26.0 gal
1500 Series Long Box 128.7 L 34.0 gal
2500 Series and 3500 Series Standard Box 136.3 L 36.0 gal
2500 Series and 3500 Series Long Box 136.3 L 36.0 gal
3500 Series Chassis Cab 240.4 L 63.5 gal
3500 Chassis Cab –Front Tank 89.0 L 23.5 gal
3500 Chassis Cab –Rear Tank (if equipped) 151.4 L 40.0 gal
Transfer Case Fluid 1.5 L 1.6 qt
Wheel Nut Torque 190 Y140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Technical Data 463
Engine Specifications
EngineVIN CodeSpark Plug Gap
4.3L V6 (LV3) H0.95–1.10 mm (0.037–
0.043 in)
4.3L V6 (LV1) P0.95–1.10 mm (0.037–
0.043 in)
5.3L V8 (L83) C0.95–1.10 mm (0.037–
0.043 in)
6.0L V8 (L96) G0.95–1.10 mm (0.037–
0.043 in)
6.2L V8 (L86) J0.95–1.10 mm (0.037–
0.043 in)