How many quarts of transmission fluid does a 2010 GMC Sierra take?
The typical total transmission fluid capacity for a 2010 GMC Sierra is about 11 to 14 quarts, with drain-and-fill services usually requiring around 9 to 10 quarts. The exact amount depends on the specific transmission model and whether you’re performing a simple drain-and-fill or a full fluid replacement with pan drop and filter change.
Transmission options and how they affect capacity
Below are the common automatic transmissions found in the 2010 Sierra and the rough capacity ranges you may encounter when servicing them. Exact figures can vary by engine, axle configuration, and whether a full replacement or a simple drain-and-fill is performed.
- 4L60-E automatic (found on many 4.3L V6 and some V8 configurations): total system capacity is typically around 11–12 quarts; a basic drain-and-fill might use roughly 8–9 quarts, while a full replacement could approach 11–12 quarts.
- 6L80/6L90 six-speed automatic (used in some higher-trim or engine combinations): total capacity generally around 13–14 quarts; a drain-and-fill might require about 9–11 quarts, with a complete replacement closer to 13–14 quarts.
In practice, you should have access to roughly 12 quarts on hand for a full replacement, and expect to replace about 9–10 quarts for a standard drain-and-fill. Always verify the exact capacity for your specific VIN and transmission via the GM service manual or a trusted dealership.
Fluid type and service notes
GM recommends Dexron VI automatic transmission fluid for these transmissions. Use the fluid type specified for your vehicle’s exact transmission model and any regional guidelines. When performing a drain-and-fill, start with the recommended amount, check the level according to the procedure in the service manual (engine at operating temperature, with the transmission at the proper level), and add more in small increments as needed.
Practical tips for the service procedure
Prepare for a full replacement if you’re changing both the pan gasket and filter, or if you suspect the torque converter fluid drain is needed. Consider having extra fluid on hand in case you need to top off after the initial fill. For best results, follow GM’s official service steps for your exact transmission model and vehicle configuration.
Summary
For a 2010 GMC Sierra, plan on roughly 11–14 quarts of transmission fluid depending on the transmission model and the service method you choose. A standard drain-and-fill typically uses about 9–10 quarts, while a full fluid replacement with pan drop and filter change can require 12–14 quarts. Use Dexron VI as the recommended fluid and consult the owner’s manual or GM service documentation for your precise VIN to confirm exact capacities.
