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How many quarts of transmission fluid does a Chevy Trailblazer take?

Most Trailblazer models with the 9-speed automatic require about 9 quarts of transmission fluid for a full service. The exact amount varies by model year, engine choice, and whether you’re performing a full pan-drop/filter change or a simple drain-and-fill.


Understanding what drives the capacity


Several factors determine the total fluid you need when servicing a Trailblazer’s transmission.



  • Transmission model and year: The Trailblazer’s 9-speed automatic is used across recent generations, but small capacity differences can exist between model years and revisions.

  • Service type: A full service (pan drop, filter replacement, and refill) will require more fluid than a drain-and-fill, which typically replaces only part of the fluid.

  • Inclusion of filters and gaskets: Replacing the transmission filter and pan gasket often coincides with a full refill, affecting the total you need to add.


In practice, plan for approximately 8.5–9.5 quarts for a full service, and roughly 4–5 quarts for a drain-and-fill. Exact figures depend on your vehicle’s year and configuration.


Typical capacities by service type


Here are the most common scenarios Chevy Trailblazer owners encounter.



  • Full transmission service (pan drop, filter replacement, and full refill): about 8.5–9.5 quarts of Dexron VI ATF, depending on year and fluid drainage efficiency.

  • Drain-and-fill operation (no filter change): about 4–5 quarts may be replaced, with additional fluid added to reach full capacity.


Always verify the exact requirement in your owner’s manual or the GM Service Information portal for your VIN.


How to confirm for your model year


To be sure you’re using the right amount and the proper specification, check the Chevrolet Trailblazer owner’s manual, the GM Service Info site, or consult your local dealer. Enter your VIN to pull the exact capacity table, as it can vary by engine and transmission pairing.


Summary


For most Trailblazer models equipped with the 9-speed automatic, you should budget about 9 quarts of Dexron VI automatic transmission fluid for a full service, with drain-and-fill procedures requiring roughly half as much. Always confirm with official manuals or your dealer for your specific year, engine, and transmission combination.

How many quarts of transmission fluid for a drain and fill?


For a standard transmission fluid drain and fill, you'll typically need 3 to 5 quarts, but you should always measure the amount you drained and refill with the same amount to start, then check the level using the dipstick after running the engine. The exact amount varies by vehicle, and it's crucial to check the owner's manual or look up specifications for your specific make and model, as a drain and fill will not replace all the old fluid. 
How to determine the right amount

  • Drain the old fluid: Let the old fluid drain completely. 
  • Measure the drained fluid: Measure how much fluid was drained. This is your starting point for refilling. 
  • Refill with the measured amount: Put the same amount of new, correct transmission fluid back into the transmission. Using a funnel can help with this process. 
  • Start the engine: Start the vehicle and let it run for a few minutes, shifting through all the gears (Park, Reverse, Neutral, Drive) while holding the brake. This circulates the new fluid. 
  • Check the level: Turn the engine off and check the fluid level with the dipstick. Add more fluid in small increments if the level is low, or drain a small amount if it's too high. 
  • Re-check: Repeat the process of running the engine and checking the dipstick until the fluid level is correct according to the dipstick's hash marks for a "hot" reading. 

Important considerations
  • A drain and fill is different from a full transmission flush, which requires significantly more fluid (10-12 quarts or more) because it aims to replace all the fluid, including what's in the torque converter. 
  • You should always use the specific type of transmission fluid recommended by your vehicle's manufacturer to avoid damage. 
  • Some vehicles, like certain Land Rovers, do not have a dipstick and require a fluid extractor to add new fluid. Consult your owner's manual to be certain. 



How much transmission fluid does a Chevy Trailblazer take?


Automatic Transmission Fluid
Capacity: 4 speed 4L70-E Total Fill 11.2 quarts. Capacity: 5 quarts Initial Fill.



What kind of transmission fluid does a Chevy Trailblazer take?


FRAM – Full Synthetic Dexron VI Automatic Transmission Fluid: 1 Gallon (Part No. F426-1G)



How much transmission fluid does a 2004 Chevy Trailblazer 4.2 take?


For Automatic Transmission: 4L60-E....AF6

Notes:(1) This specification has been updated from Dexron II or III to Dexron VI per a Technical Service Bulletin from the manufacturer
Capacity:4 speed 4L60-E Total Fill 11.2 quarts.
Capacity:5 quarts Initial Fill.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.