For the 2010 GMC Sierra 2500 HD with the 6.6L LMM Diesel engine, the oil capacity is 10 quarts (including filter replacement). The preferred viscosity for temperatures above -18°C is SAE 15W-40, though 5W-40 is recommended for all temperatures when ambient conditions are below 0°F (-18°C) to improve cold starting. AMSOIL recommends using Signature Series 15W-40 Max-Duty Diesel Oil (DMEQT-EA) paired with an AMSOIL Oil Filter (EAO52-EA).
What oil does a 2010 GMC Sierra 2500 HD LMM take?
The 2010 GMC Sierra 2500 HD with the 6.6L LMM engine requires an oil grade of CJ-4. For most operating conditions above -18°C (0°F), SAE 15W-40 is preferred. However, if you operate in ambient temperatures below -18°C, AMSOIL recommends using a 5W-40 viscosity to improve cold starting performance.
AMSOIL product recommendations
Based on the AMSOIL lookup for your 2010 GMC Sierra 2500 HD, here are the recommended fluids and filters to maintain peak performance.
Engine Oil Options
| Product Name | Code |
|---|---|
| AMSOIL Signature Series 15W-40 Max-Duty Diesel Oil | DMEQT-EA |
| AMSOIL 15W-40 Heavy-Duty Synthetic Diesel Oil | ADPQT-EA |
Oil Filter Options
| Product Name | Code |
|---|---|
| AMSOIL Oil Filter | EAO52-EA |
| WIX XP Oil Filter | 57202XP-EA |
| WIX Oil Filter | 57202-EA |
Additional Maintenance Products
| Component | Product Name / Code |
|---|---|
| Air Filter | PowerCore® Filter (P610875-EA) |
| Coolant | Passenger Car & Light Truck Antifreeze (ANTPC1G-EA) |
| Coolant (Concentrate) | Propylene Glycol Antifreeze (ANT1G-EA) |
| Transmission Fluid | Signature Series ATF (ATLPK-EA) |
| Transmission Fluid (OE) | OE Fuel-Efficient ATF (OTLQT-EA) |
Engine Oil Specifications
| Specification | Details |
|---|---|
| Oil Grade | CJ-4 |
| Preferred Viscosity | 15W-40 (Above -18°C) |
| Cold Weather Viscosity | 5W-40 (All Temps below -18°C) |
Engine Oil Capacity & Torque
| Metric | Value |
|---|---|
| Oil Capacity | 10 quarts (with filter) |
| Drain Plug Torque (16 mm Hex) | 62 ft/lbs |
| Drain Plug Torque (13 mm Hex) | 18 ft/lbs |
Note: Always check the oil level after refilling.
How much coolant and transmission fluid is required?
The cooling system for this vehicle has a capacity of 21.6 quarts. For the automatic transmission (6L90), the total fill capacity is 12.4 quarts, while an initial fill typically requires 6 quarts.
Coolant Specifications
| Component | Capacity |
|---|---|
| Engine Coolant | 21.6 quarts |
The AMSOIL lookup lists ANTPC1G-EA as a 50/50 pre-mix ethylene glycol formulation that is phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free.
Transmission Fluid Specifications
| Component | Capacity |
|---|---|
| 6L90 Transmission (Total Fill) | 12.4 quarts |
| 6L90 Transmission (Initial Fill) | 6 quarts |
Diesel maintenance notes for this vehicle
Maintaining the LMM Duramax engine requires attention to high-stress components. Owners should focus on monitoring fuel system integrity, turbocharger health, and emissions components. Because these trucks are frequently used in high-load environments, regular inspection of the cooling system and heavy-duty drivetrain fluids is essential for longevity.
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL Product | How it may help | Limitation |
|---|---|---|---|---|
| Cold Starting | Thick oil can hinder startup in freezing temps. | 5W-40 Viscosity | Improves cold starting when below -18°C. | Not a mechanical repair. |
| Engine Wear | High torque/load causes friction. | DMEQT-EA | Delivers up to 6X more wear protection. | Requires regular service. |
| Contaminants | Small particles cause abrasive wear. | EAO52-EA | 99% efficiency at 20 microns. | Filter must be replaced. |
| Air Restriction | Dirty filters reduce fuel economy. | P610875-EA | Lower initial restriction for performance. | Check regularly. |
Common maintenance concerns for this vehicle
Owners of the 2010 GMC Sierra 2500 HD should consider the following practical checks:
- Turbocharger Health: Monitor for unusual noises or loss of boost, as these engines are subject to high-stress cycles.
- Cooling System Integrity: Given the heavy towing applications, check hoses and gaskets for leaks regularly.
- Fuel System Monitoring: Ensure fuel system integrity is maintained to protect expensive diesel injectors.
Recall, TSB, and manufacturer communication notes
NHTSA recall research indicates 5 recall records for this vehicle model. One significant recall (Campaign 21V054000) involves the front passenger air bag inflator module, which may explode due to propellant degradation from high humidity or temperature cycling. This could result in serious injury or death.
Important: Always verify open recalls by checking your specific VIN through the official NHTSA website or a GM dealer.
About this vehicle
The 2010 GMC Sierra 2500 HD is a heavy-duty pickup truck manufactured by General Motors. This specific model features the 6.6L V8 diesel engine, identified by the LMM engine code. The Duramax diesel engine family is a cornerstone of GM’s heavy-duty lineup, engineered to provide the high torque necessary for commercial applications, heavy towing, and demanding work cycles.
As part of the GMC lineup, this truck shares significant mechanical and chassis commonality with its sibling, the Chevrolet Silverado. Owners often utilize these vehicles for vocational work, long-distance hauling, or heavy-duty recreational towing. Because these engines are designed for longevity under high-stress conditions, they are typically subject to rigorous maintenance schedules involving specialized diesel components.
Maintenance context for this era of Duramax includes monitoring fuel system integrity, turbocharger health, and emissions components. Given that these trucks are often used in high-load environments, regular attention to cooling systems and heavy-duty drivetrain fluids is essential. It is highly recommended that owners verify exact service intervals through a dedicated workshop manual or official manufacturer documentation.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 2010 GMC Sierra 2500 HD LMM?
The engine requires 10 quarts of oil when performing a change that includes a new filter.
Which oil viscosity should I use in winter?
When ambient temperatures drop below 0°F (-18°C), it is recommended to use 5W-40 to improve cold starting performance.
Can I use a different oil grade than CJ-4?
The AMSOIL lookup specifies the oil grade as CJ-4 for this application. Always consult your owner’s manual for manufacturer requirements.
How often should I change my diesel oil filter?
While specific intervals vary by use, using high-efficiency filters like the WIX XP can offer drain intervals up to 25,000 miles under certain conditions.
What is the torque spec for my oil drain plug?
The torque specification depends on your plug: 62 ft/lbs for a 16 mm Hex plug or 18 ft/lbs for a 13 mm Hex plug.
How do I check for active recalls on my truck?
You should contact a GM dealer or visit the NHTSA website and provide your specific Vehicle Identification Number (VIN) to confirm any open safety recalls.
Disclaimer: This information is derived from provided source data. Always verify fluid capacities, specifications, and torque values with your vehicle’s official owner’s manual or a certified technician before performing maintenance.