GMC 5.3i V8 (L84) Tuning
Supported in 2 GMC models, 2019+.
GMC
2 supported 5.3i V8 (L84) applications
Models With the GMC 5.3i V8 (L84)
All Supported GMC 5.3i V8 (L84) Tunes
About GMC 5.3i V8 (L84) tuning
We tune the GMC 5.3i V8 (L84) in 2 applications across the Sierra, Yukon, from 2019+, in gasoline form, with stock outputs of 355 hp. Calibrations are written on AutoTuner for your exact hardware and fuel, then proven on our Dynojet 424xLC2 in Jenison, MI.
This engine runs on: Bosch T93.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.