2025 GMC Sierra 2500 HD PICKUP Oil Capacity, Types, & Filters
Your essential guide to 2025 GMC Sierra 2500 HD PICKUP oil change is here! No more searching – find all the critical oil specs for your 2025 GMC Sierra 2500 HD PICKUP, including oil capacity, recommended oil viscosity (type), and the correct oil filter.
We cover all engine options, categorized by their specific engine codes, ensuring you get the right information for your specific configuration. Keep reading to discover everything you need for your next 2025 GMC Sierra 2500 HD PICKUP oil change!
Scroll Table ➜
| Engine & Code | Oil Capacity | Oil Viscosity/Type | Oil Filter |
|---|---|---|---|
| 6.6L 8-cylinder [7] L8T 1 Flex | 8 quarts (with filter) | SAE 0W-30 (Below -29°C) SAE 5W-30 (All TEMPS) | GM 12735811 |
| 6.6L 8-cylinder [7] L8T 7 | 8 quarts (with filter) | SAE 0W-30 (Below -29°C) SAE 5W-30 (All TEMPS) | GM 12735811 |
| 6.6L 8-cylinder [Y] L5P Y Diesel Turbo | 10 quarts (with filter) | SAE 15W-40 (Above -18°C) SAE 5W-40 (All TEMPS) | GM 12735811 |
| 6.6L 8-cylinder [7] L8T 1 Flex | 8 quarts (with filter) | SAE 0W-30 (Below -29°C) SAE 5W-30 (All TEMPS) | GM 12735811 |
| 6.6L 8-cylinder [7] L8T 7 | 8 quarts (with filter) | SAE 0W-30 (Below -29°C) SAE 5W-30 (All TEMPS) | GM 12735811 |
| 6.6L 8-cylinder [Y] L5P Y Diesel Turbo | 10 quarts (with filter) | SAE 15W-40 (Above -18°C) SAE 5W-40 (All TEMPS) | GM 12735811 |
Select Your 2025 GMC Sierra 2500 HD PICKUP Engine Option
6.6L 8-cylinder Engine Code [7] L8T 1 Flex
Engine:
6.6L 8-cylinder [7] L8T 1 Flex [aka 6.6L V8 (Diesel)]
Body & Trims:
AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT
Oil Capacity:
8 quarts (with filter)
OEM Oil Filter:
Oil Filter Replaces:
12684038, 12690385, 12707246, 12731742, 12732501, 19330000, 89017525, 89017527
2025 GMC Sierra 2500 HD PICKUP 6.6L 8-cylinder [7] L8T 1 Flex oil change details
Oil Grade:
SEOC3
Oil Capacity:
8 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
Oil Drain Plug Torque:
18 ft/lbs (Oil Drain Plug). Always replace the drain plug seal with a new one.
Notes:
If you are using E85 or M85 fuels, use AMSOIL of the appropriate viscosity and follow the Original Equipment Manufacturer (OEM) recommended drain interval. Extended oil drain intervals are only possible if you perform an oil analysis when using these types of fuels.
6.6L 8-cylinder Engine Code [7] L8T 7
Engine:
6.6L 8-cylinder [7] L8T 7 [aka 6.6L V8 (Diesel)]
Body & Trims:
AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT
Oil Capacity:
8 quarts (with filter)
OEM Oil Filter:
Oil Filter Replaces:
12684038, 12690385, 12707246, 12731742, 12732501, 19330000, 89017525, 89017527
2025 GMC Sierra 2500 HD PICKUP 6.6L 8-cylinder [7] L8T 7 oil change details
Oil Grade:
SEOC3
Oil Capacity:
8 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
Oil Drain Plug Torque:
18 ft/lbs (Oil Drain Plug). Always replace the drain plug seal with a new one.
Notes:
N/A
6.6L 8-cylinder Engine Code [Y] L5P Y Diesel Turbo
Engine:
6.6L 8-cylinder [Y] L5P Y Diesel Turbo [aka 6.6L V8 (Diesel)]
Body & Trims:
AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT
Oil Capacity:
10 quarts (with filter)
Oil Viscosity/Type:
SAE 15W-40 (Above -18°C)
SAE 5W-40 (All TEMPS)
OEM Oil Filter:
Oil Filter Replaces:
12684038, 12690385, 12707246, 12731742, 12732501, 19330000, 89017525, 89017527
2025 GMC Sierra 2500 HD PICKUP 6.6L 8-cylinder [Y] L5P Y Diesel Turbo oil change details
Oil Grade:
CJ-4
Oil Capacity:
10 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
Oil Viscosity/Type:
SAE 15W-40 (Above -18°C) - When the ambient temperature is below -18°C (0°F), use SAE 5W-40 to improve cold starting.
SAE 5W-40 (All TEMPS)
Oil Drain Plug Torque:
18 ft/lbs (Oil Drain Plug). Always replace the drain plug seal with a new one.
Notes:
N/A
6.6L 8-cylinder Engine Code [7] L8T 1 Flex
Engine:
6.6L 8-cylinder [7] L8T 1 Flex [aka 6.6L V8 (Gas/Flex)]
Body & Trims:
AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT
Oil Capacity:
8 quarts (with filter)
OEM Oil Filter:
Oil Filter Replaces:
12684038, 12690385, 12707246, 12731742, 12732501, 19330000, 89017525, 89017527
2025 GMC Sierra 2500 HD PICKUP 6.6L 8-cylinder [7] L8T 1 Flex oil change details
Oil Grade:
SEOC3
Oil Capacity:
8 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
Oil Drain Plug Torque:
18 ft/lbs (Oil Drain Plug). Always replace the drain plug seal with a new one.
Notes:
If you are using E85 or M85 fuels, use AMSOIL of the appropriate viscosity and follow the Original Equipment Manufacturer (OEM) recommended drain interval. Extended oil drain intervals are only possible if you perform an oil analysis when using these types of fuels.
6.6L 8-cylinder Engine Code [7] L8T 7
Engine:
6.6L 8-cylinder [7] L8T 7 [aka 6.6L V8 (Gas/Flex)]
Body & Trims:
AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT
Oil Capacity:
8 quarts (with filter)
OEM Oil Filter:
Oil Filter Replaces:
12684038, 12690385, 12707246, 12731742, 12732501, 19330000, 89017525, 89017527
2025 GMC Sierra 2500 HD PICKUP 6.6L 8-cylinder [7] L8T 7 oil change details
Oil Grade:
SEOC3
Oil Capacity:
8 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
Oil Drain Plug Torque:
18 ft/lbs (Oil Drain Plug). Always replace the drain plug seal with a new one.
Notes:
N/A
6.6L 8-cylinder Engine Code [Y] L5P Y Diesel Turbo
Engine:
6.6L 8-cylinder [Y] L5P Y Diesel Turbo [aka 6.6L V8 (Gas/Flex)]
Body & Trims:
AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT
Oil Capacity:
10 quarts (with filter)
Oil Viscosity/Type:
SAE 15W-40 (Above -18°C)
SAE 5W-40 (All TEMPS)
OEM Oil Filter:
Oil Filter Replaces:
12684038, 12690385, 12707246, 12731742, 12732501, 19330000, 89017525, 89017527
2025 GMC Sierra 2500 HD PICKUP 6.6L 8-cylinder [Y] L5P Y Diesel Turbo oil change details
Oil Grade:
CJ-4
Oil Capacity:
10 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
Oil Viscosity/Type:
SAE 15W-40 (Above -18°C) - When the ambient temperature is below -18°C (0°F), use SAE 5W-40 to improve cold starting.
SAE 5W-40 (All TEMPS)
Oil Drain Plug Torque:
18 ft/lbs (Oil Drain Plug). Always replace the drain plug seal with a new one.
Notes:
N/A