How many quarts of transmission fluid does a Chevy Impala need?
The exact amount depends on the model year and the transmission installed. In general, plan on about 11 quarts for a standard drain-and-fill, and roughly 13–15 quarts if you’re doing a full system service or flush. The precise capacity can vary, so consult the owner's manual or a GM service guide for your VIN.
Common transmission options in the Impala
Over the years, Impalas have used several automatic transmissions. The two most common in recent decades are the 4T65-E and the 6T70/6T75. The capacity you need aligns with which transmission your car uses.
- 4T65-E automatic (found on older Impalas, typically mid-1990s through the early 2010s, paired with several V6/ V8 configurations)
- 6T70/6T75 automatic (modern Impalas, generally mid-2010s to 2020, paired with the 3.6L V6 and related configurations)
These are representative examples; exact capacities depend on year, engine, and any factory options.
Estimated transmission fluid capacity by service type
Use these ranges as a planning guide for common service approaches. Exact numbers can vary by year and specific transmission variant.
- Drain-and-fill (pan drained, filter replaced, no cooler-line flush): approximately 9–11 quarts
- Standard full service (pan drain, filter replacement, top-off, no deep cooler-line work): roughly 11–13 quarts
- Full system replacement or flush (drain, pan, cooler lines, and related components): around 13–15 quarts
Always verify the exact capacity for your vehicle from the owner's manual, GM service information, or a trusted shop, since variations by year and transmission type do occur.
VIN-specific and year-by-year notes
For precise figures, consult GM’s service data tied to your car’s VIN. Some Impalas may require slightly more or less fluid based on the exact transmission and configuration installed at the factory.
Summary
In short, there isn’t a single universal number for every Chevy Impala. Most models require about 11 quarts for a standard drain-and-fill, and you should budget roughly 13–15 quarts if you’re performing a comprehensive system service or flush. Always confirm the capacity for your specific VIN to avoid under- or over-filling the transmission.
