GMC 4.3i V6 Tuning
Supported in 2 GMC models, 2014+.
GMC
6 supported 4.3i V6 applications
Models With the GMC 4.3i V6
All Supported GMC 4.3i V6 Tunes
| Model | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| Savana | 2018+ | 285 hp | ECU Delco E92 | AutoTuner | |
| Savana | 2018+ | 285 hp | TCU Delco T87A | AutoTuner | |
| Savana | 2018+ | 285 hp | TCU Delco T87 | AutoTuner | |
| Sierra | 2014+ | 285 hp | ECU Delco E92 | AutoTuner | |
| Sierra | 2014+ | 285 hp | TCU Delco T87A | AutoTuner | |
| Sierra | 2014+ | 285 hp | TCU Delco T87 | AutoTuner |
About GMC 4.3i V6 tuning
We tune the GMC 4.3i V6 in 6 applications across the Savana, Sierra, from 2014+, in gasoline form, with stock outputs of 285 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: Delco E92, Delco T87, Delco T87A.
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.