GMC Sierra 2500HD
Maintenance specs for 11 variants of the GMC Sierra 2500HD — from 2001 to 2026.
2001–2006 GMC Sierra 2500HD
6.0L V8 Vortec (LQ4) · RWD
300 hp / 360 lb-ft
Transmission
Type4-Speed Automatic (4L80-E)
FluidDexron III
Drain & fill5 qt
Full capacity13 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Rear fluid80W-90 GL-5
Fuel
Tank26 gal
TypeRegular 87
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2001–2006 GMC Sierra 2500HD
6.0L V8 Vortec (LQ4) · 4WD
300 hp / 360 lb-ft
Transmission
Type4-Speed Automatic (4L80-E)
FluidDexron III
Drain & fill5 qt
Full capacity13 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Front fluid80W-90 GL-5
Rear fluid80W-90 GL-5
Transfer Case
FluidAuto-Trak II
Fuel
Tank26 gal
TypeRegular 87
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2001–2006 GMC Sierra 2500HD
6.6L Duramax Turbo Diesel V8 (LB7/LLY) · 4WD
300 hp / 520 lb-ft
Transmission
Type5-Speed Automatic (Allison 1000)
FluidTransynd
Drain & fill6 qt
Full capacity17 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Front fluid80W-90 GL-5
Rear fluid80W-90 GL-5
Transfer Case
FluidAuto-Trak II
Fuel
Tank26 gal
TypeDiesel
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2007–2014 GMC Sierra 2500HD
6.0L V8 Vortec (LY6) · RWD
360 hp / 380 lb-ft
Transmission
Type6-Speed Automatic (6L90)
FluidDexron VI
Drain & fill5.5 qt
Full capacity13.5 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Rear fluid75W-90 Synthetic GL-5
Fuel
Tank36 gal
TypeRegular 87
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2007–2014 GMC Sierra 2500HD
6.0L V8 Vortec (LY6) · 4WD
360 hp / 380 lb-ft
Transmission
Type6-Speed Automatic (6L90)
FluidDexron VI
Drain & fill5.5 qt
Full capacity13.5 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Front fluid75W-90 Synthetic GL-5
Rear fluid75W-90 Synthetic GL-5
Transfer Case
FluidAuto-Trak II
Fuel
Tank36 gal
TypeRegular 87
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2007–2014 GMC Sierra 2500HD
6.6L Duramax Turbo Diesel V8 (LMM/LML) · 4WD
397 hp / 765 lb-ft
Transmission
Type6-Speed Automatic (Allison 1000)
FluidTransynd
Drain & fill6 qt
Full capacity17 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Front fluid75W-90 Synthetic GL-5
Rear fluid75W-90 Synthetic GL-5
Transfer Case
FluidAuto-Trak II
Fuel
Tank36 gal
TypeDiesel
Service Intervals
Oil change7,500 mi
Trans service50,000 mi
Coolant flush150,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2015–2019 GMC Sierra 2500HD
6.0L V8 Vortec (L96) · RWD
360 hp / 380 lb-ft
Transmission
Type6-Speed Automatic (6L90)
FluidDexron VI
Drain & fill5.5 qt
Full capacity13.5 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Rear fluid75W-90 Synthetic GL-5
Fuel
Tank36 gal
TypeRegular 87
Service Intervals
Oil change7,500 mi
Trans service45,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2015–2019 GMC Sierra 2500HD
6.6L Duramax Turbo Diesel V8 (L5P) · 4WD
445 hp / 910 lb-ft
Transmission
Type6-Speed Automatic (Allison 1000)
FluidTransynd
Drain & fill6 qt
Full capacity17 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Front fluid75W-90 Synthetic GL-5
Rear fluid75W-90 Synthetic GL-5
Transfer Case
FluidAuto-Trak II
Fuel
Tank36 gal
TypeDiesel
Service Intervals
Oil change7,500 mi
Trans service45,000 mi
Coolant flush150,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
2020–2026 GMC Sierra 2500HD
6.6L Duramax Turbo Diesel V8 (L5P) · 4WD
470 hp / 975 lb-ft
Transmission
Type10-Speed Automatic (Allison 10L1000)
FluidTransynd
Drain & fill6 qt
Full capacity17 qt
Power Steering
TypeElectric (no fluid)
Differentials
Front fluid75W-90 Synthetic GL-5
Rear fluid75W-90 Synthetic GL-5
Transfer Case
FluidAuto-Trak II
Fuel
Tank36 gal
TypeDiesel
Service Intervals
Oil change7,500 mi
Trans service45,000 mi
Coolant flush150,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Cabin filter22,500 mi
Drive belt100,000 mi
2020–2026 GMC Sierra 2500HD
6.6L V8 (L8T) · RWD
401 hp / 464 lb-ft
Transmission
Type6-Speed Automatic (6L90)
FluidDexron HP
Drain & fill6 qt
Full capacity13.5 qt
Power Steering
TypeElectric (no fluid)
Differentials
Rear fluid75W-90 Synthetic GL-5
Fuel
Tank36 gal
TypeRegular 87
Service Intervals
Oil change7,500 mi
Trans service45,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Cabin filter22,500 mi
Drive belt100,000 mi
2020–2026 GMC Sierra 2500HD
6.6L V8 (L8T) · 4WD
401 hp / 464 lb-ft
Transmission
Type6-Speed Automatic (6L90)
FluidDexron HP
Drain & fill6 qt
Full capacity13.5 qt
Power Steering
TypeElectric (no fluid)
Differentials
Front fluid75W-90 Synthetic GL-5
Rear fluid75W-90 Synthetic GL-5
Transfer Case
FluidAuto-Trak II
Fuel
Tank36 gal
TypeRegular 87
Service Intervals
Oil change7,500 mi
Trans service45,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Cabin filter22,500 mi
Drive belt100,000 mi