The 2022 GMC Sierra 1500 Limited is available in multiple trims, each with its own estimated fuel economy, here are the EPA estimates for each trim:

1. Denali: 23 MPG City and 30 MPG Highway
2. Denali: 15 MPG City and 21 MPG Highway
3. SLT: 23 MPG City and 30 MPG Highway
4. SLT: 16 MPG City and 22 MPG Highway
5. Elevation: 20 MPG City and 23 MPG Highway
6. Elevation: 23 MPG City and 30 MPG Highway
7. Pro: 20 MPG City and 23 MPG Highway
8. SLE: 20 MPG City and 23 MPG Highway
9. SLE: 23 MPG City and 30 MPG Highway
10. AT4: 14 MPG City and 19 MPG Highway
11. AT4: 22 MPG City and 26 MPG Highway

It is important to remember factors such as driving style, weather conditions, and the use of features such as Eco mode can impact fuel efficiency.

The 2022 GMC Sierra 1500 Limited has a maximum towing capacity of between 8900 and 13000 pounds, when properly equipped. Various factors may impact towing capacity, including weight of passengers, cargo, and options/accessories.