2024 GMC Sierra 1500 Fluid Type Specs

Quick reference

Engine Oil

For the 2024 GMC Sierra 1500, engine oil specifications vary significantly depending on the engine. For gasoline engines, the general recommendation is SAE 0W-20 meeting the dexos1 Gen3 specification. This specification ensures optimal performance, fuel efficiency, and protection for modern gasoline direct-injection engines, particularly against low-speed pre-ignition (LSPI).

Diesel engines, on the other hand, typically require SAE 5W-30 meeting either the new dexos D specification for the 3.0L Duramax or dexos R for other diesel applications. These diesel-specific dexos formulations are crucial for protecting emission-control systems such as diesel particulate filters (DPFs) and Selective Catalytic Reduction (SCR) systems, in addition to providing superior wear protection under the strenuous conditions of a diesel engine. Always verify the exact engine oil specification and capacity for your specific engine in the owner's manual or OEM service information. Capacities can range from approximately 6.0 to 8.0 quarts depending on the engine.

Intervals: Generally, engine oil and filter should be changed every 7,500 miles or 12 months, or as indicated by the vehicle's Oil Life Monitoring System, whichever comes first.

Pitfalls: Mixing different oil types or using non-dexos approved oils can lead to premature engine wear, reduced fuel economy, and potential damage to emission systems. Always ensure the oil carries the official dexos logo for your engine type.

Engine Coolant

The 2024 GMC Sierra 1500 utilizes Dex-Cool engine coolant, which is an Organic Acid Technology (OAT) coolant. It is typically identified by its orange or reddish-orange color. This long-life coolant offers extended protection against corrosion and freezing/boiling compared to traditional coolants.

Intervals: Dex-Cool is designed for extended service intervals, often up to 5 years or 150,000 miles, whichever comes first. However, it's always wise to consult your owner's manual for precise recommendations.

Pitfalls: Never mix Dex-Cool (OAT) with silicate-based or Hybrid Organic Acid Technology (HOAT) coolants. Mixing these different chemistries can lead to gel formation, premature wear of water pump seals, and reduced cooling system efficiency. Always use distilled water if mixing concentrate, though pre-diluted 50/50 Dex-Cool is highly recommended for convenience and proper concentration.

Transmission Fluid

For the 2024 GMC Sierra 1500, the automatic transmission requires Dexron VI automatic transmission fluid. Dexron VI is a synthetic blend fluid designed for improved durability, smoother shifting, and better fuel economy than previous Dexron specifications. It's backward-compatible with older transmissions that specified Dexron III, though Dexron VI offers superior performance.

Intervals: Transmission fluid service intervals can vary significantly based on driving conditions (e.g., heavy towing, frequent stop-and-go). Generally, intervals can range from 45,000 to 90,000 miles. Consult your owner's manual for specific maintenance schedules.

Pitfalls: Never use