For the 2023 GMC Sierra 1500 Pickup with the 3.0L 6-cylinder LZ0 8 Diesel Turbo engine, the required oil viscosity is 0W-20. The engine oil capacity is 7 quarts when performing a change with a new filter. AMSOIL recommends using AMSOIL 0W-20 100% Synthetic Diesel Oil (DP020QT-EA) paired with a WIX Oil Filter (WL10351-EA) for optimal protection.
What oil does a 2023 GMC Sierra 1500 3.0L Diesel take?
The 2023 GMC Sierra 1500 with the 3.0L LZ0 diesel engine requires an oil viscosity of 0W-20 for all temperatures. The AMSOIL lookup oil grade is SEOA5. It is critical to use a high-quality synthetic diesel oil designed to handle the specific requirements of modern turbodiesel engines.
AMSOIL product recommendations
Based on the AMSOIL lookup data, here are the recommended fluids and filters for your 2023 GMC Sierra 1500 3.0L Diesel.
Engine Oil & Filter
| Product Name | Part Code |
|---|---|
| AMSOIL 0W-20 100% Synthetic Diesel Oil | DP020QT-EA |
| WIX Oil Filter | WL10351-EA |
Coolant & Antifreeze
| Product Name | Part Code |
|---|---|
| AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
Automatic Transmission Fluid
| Product Name | Part Code |
|---|---|
| AMSOIL Signature Series ULV 100% Synthetic ATF | ULVPK-EA |
Transfer Case Lubricant
| Product Name | Part Code |
|---|---|
| AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF | ATLPK-EA |
| AMSOIL OE Fuel-Efficient 100% Synthetic ATF | OTLQT-EA |
Engine Oil Specifications
| Viscosity | Oil Grade (AMSOIL Lookup) |
|---|---|
| 0W-20 | SEOA5 |
Engine Oil Capacity
| Condition | Capacity |
|---|---|
| With Filter Change | 7 quarts |
Note: After refilling, always check the oil level.
Engine Oil Details and Service Specs
When performing an oil change on the LZ0 diesel engine, follow these specific torque and replacement requirements to ensure a leak-free service.
Drain Plug Torque Specifications
| Component | Torque Value |
|---|---|
| Oil Drain Plug | 18 ft/lbs |
Important: Always replace the drain plug seal during service.
Oil Filter Information
The AMSOIL lookup recommends a WIX Oil Filter (Part Number WL10351-EA). This premium media is designed to help reduce engine wear and offers OEM drain intervals.
Automatic Transmission Fluid (ATF) Specifications
The 2023 GMC Sierra 1500 uses a 10-speed automatic transmission. The AMSOIL lookup notes that the WSS-M2C949-A specification was developed by Ford and GM, with products meeting this spec available under DEXRON ULV and MERCON ULV tradenames.
Transmission Capacity Details
| Configuration | Total Fill Capacity |
|---|---|
| 10-speed Trans Only (10L80/MQB) | 11.6 quarts |
| 10-speed With Cooler (10L80/MQB) | 12 quarts |
| 10-speed Trans Only (10L80/MQC) | 11.6 quarts |
| 10-speed With Cooler (10L80/MQC) | 12 quarts |
Initial Fill: 8.1 quarts.
Transfer Case Lubricant Specifications
For the transfer case (MP3015, 25….AF6), specific sealant and torque procedures are required for maintenance.
Transfer Case Torque & Capacity
| Component | Torque |
|---|---|
| Drain Plug | 15 ft/lbs |
| Fill Plug | 15 ft/lbs |
Service Note: Apply high-performance thread sealant to the threads of both the drain and fill plugs before installing.
| Configuration | Capacity |
|---|---|
| MP3015, 25 | 3.2 pints |
Identification: Check the tag on the case to confirm requirements.
Coolant and Antifreeze Specifications
The cooling system requires a capacity of 13.8 quarts. AMSOIL offers both pre-mixed and concentrated options.
Coolant Options
| Product | Formulation |
|---|---|
| AMSOIL Passenger Car & Light Truck Antifreeze | Ethylene glycol 50/50 pre-mix |
| AMSOIL Propylene Glycol Antifreeze | Concentrated (requires mixing) |
Both products are phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free.
Diesel maintenance notes for this vehicle
- Turbocharger Health: Because the LZ0 is a turbodiesel, maintaining correct oil viscosity (0W-20) is critical for turbocharger lubrication.
- Seal Replacement: Always replace the oil drain plug seal when changing the engine oil to prevent leaks.
- Fluid Verification: For transfer case service, always verify the specific requirements by checking the identification tag on the case.
- Coolant Mixing: If using concentrated propylene glycol coolant, ensure you mix it with distilled or high-quality water as required.
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL product from this lookup | How it may help | Important limitation |
|---|---|---|---|---|
| Engine Wear | Diesel engines face high pressure and friction. | DP020QT-EA | Delivers up to 6X more wear protection than leading industry standards. | Requires regular interval adherence. |
| Temperature Extremes | Cold starts or high heat can affect viscosity. | DP020QT-EA | Excels in hot and cold temperature extremes. | Not a substitute for proper cooling system maintenance. |
| Transmission Heat | Heavy towing generates significant ATF heat. | ULVPK-EA | Withstands the rigors of heavy towing and elevated temperatures. | Does not repair existing mechanical damage. |
Common maintenance concerns for this vehicle
Based on owner reports and technical context, owners should monitor the following:
- Engine Power/Propulsion: Some users have reported unexpected loss of propulsion or engine power events. While these are unverified owner complaints, monitoring for any reduced-engine-power messages is advised.
- Braking Systems: Ensure the electronic brake control module is functioning correctly to avoid issues with low brake fluid warnings.
- Lighting: Monitor daytime running lights (DRLs) to ensure they behave as intended with headlights.
Recall, TSB, and manufacturer communication notes
The following official NHTSA recall information was identified for the 2023 GMC Sierra 1500:
- Lighting Control Module (Campaign 22V903000): Certain vehicles may have DRLs that do not deactivate when headlights are on. Remedy involves a software update via dealer or OTA.
- Brake Fluid Warning (Campaign 24V674000): The electronic brake control module software may fail to display a warning light during a loss of brake fluid. Remedy involves a software update.
Disclaimer: Always verify open recalls by VIN through the official GMC website or your local dealer before performing service.
About this vehicle
The 2023 GMC Sierra 1500 is a full-size pickup truck manufactured by General Motors, sharing significant mechanical commonality with its sibling, the Chevrolet Silverado. This specific model features the 3.0L LZ0 6-cylinder diesel engine, which represents a modern iteration of GM’s diesel technology designed for improved fuel efficiency and torque in light-duty applications.
The LZ0 Duramax diesel engine is typically utilized for daily commuting, light-to-medium duty towing, and general utility work. Because this is a modern turbodiesel, maintenance often focuses on specialized requirements such as Diesel Exhaust Fluid (DEF) management, fuel filtration, and strict adherence to oil viscosity requirements to maintain turbocharger health and emissions system integrity.
Owners of the 3.0L diesel variant should pay close attention to fuel quality and the condition of the diesel particulate filter (DPF) systems common in these engines. Due to the complexity of the LZ0 engine code and its specific turbocharging setup, using the correct OEM-specified fluids is critical for long-term reliability.
Common questions about this vehicle’s diesel oil and maintenance
How much oil does my 3.0L LZ0 diesel take?
The engine requires 7 quarts of oil when performing a change with the filter included.
What is the correct oil viscosity for the 2023 GMC Sierra 1500 Diesel?
The recommended viscosity is 0W-20 for all temperatures. AMSOIL recommends DP020QT-EA.
What torque should I use for the oil drain plug?
The oil drain plug should be torqued to 18 ft/lbs. Remember to replace the drain plug seal.
Does my transmission need special fluid?
Yes, the 10-speed automatic transmission requires ULV (Ultra Low Viscosity) fluid. The AMSOIL lookup references WSS-M2C949-A specifications and lists ULVPK-EA for this application.
How often should I change my coolant?
While specific intervals depend on driving conditions, AMSOIL products like ANTPC1G-EA provide protection for up to 150,000 miles or 5 years.
What should I do about transfer case maintenance?
When servicing the transfer case, apply high-performance thread sealant to the drain and fill plugs. The torque for both plugs is 15 ft/lbs.
Verification Disclaimer: While this article is based on provided AMSOIL and NHTSA data, always consult your vehicle’s owner’s manual or a certified professional before performing maintenance.