The 2015 Silverado 1500 with the 5.3-liter V8 uses a six-speed automatic transmission, specifically the Hydra-Matic 6L80E.
Overview of the 2015 Silverado transmission setup
In 2015, the Silverado 1500’s EcoTec3 lineup paired the 5.3L V8 with a six-speed automatic transmission. This pairing was standard across most trims, while other engine options used their own matching six-speed automatics. There was no manual transmission offered on the Silverado 1500 for that model year.
Below is a quick mapping of the common engine-to-transmission pairings for the 2015 Silverado lineup. This helps clarify which transmission each engine typically received, though exact configurations can vary by trim and package.
- 5.3L V8 — 6-speed automatic (Hydra-Matic 6L80E)
- 4.3L V6 — 6-speed automatic (Hydra-Matic 6L50)
- 6.2L V8 — 6-speed automatic (Hydra-Matic 6L80E)
Conclusion: For the 2015 Silverado 1500, the 5.3-liter V8 was paired with a standard 6-speed automatic transmission—the Hydra-Matic 6L80E—across the majority of trims. Always verify the exact build with the vehicle’s window sticker or VIN/RPO data, as configurations can vary slightly by model and option package.
Additional notes for buyers and owners
When inspecting or purchasing a 2015 Silverado 1500 with a 5.3, check the vehicle documentation or the transmission tag under the hood to confirm the exact transmission model. If evaluating a used truck, consider a test drive to assess shift quality and condition, and review maintenance records for any transmission service history.
Summary: The 2015 Chevy Silverado 1500 equipped with the 5.3L V8 uses a six-speed automatic Hydra-Matic 6L80E transmission, aligning with GM’s EcoTec3 drivetrain approach for that year. This configuration was standard for the 5.3 engine across most trims, with other engines pairing to their respective six-speed automatics.