GMC 4.3 Tuning
Supported in 5 GMC models, 1998-2023.
GMC
16 supported 4.3 applications
Models With the GMC 4.3
All Supported GMC 4.3 Tunes
| Model | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| Jimmy | 2001 | ECU | HP Tuners | ||
| Jimmy | 1998-2000 | ECU | HP Tuners | ||
| Safari | 2001-2005 | ECU | HP Tuners | ||
| Safari | 1998-2000 | ECU | HP Tuners | ||
| Savana | 2021-2023 | ECU | HP Tuners | ||
| Savana | 2018-2020 | ECU | HP Tuners | ||
| Savana | 2008-2014 | ECU | HP Tuners | ||
| Savana | 1998-2007 | ECU | HP Tuners | ||
| Sierra | 2017 | ECU | HP Tuners | ||
| Sierra | 2015-2016 | ECU | HP Tuners | ||
| Sierra | 2014 | ECU | HP Tuners | ||
| Sierra | 2008-2013 | ECU | HP Tuners | ||
| Sierra | 2001-2007 | ECU | HP Tuners | ||
| Sierra | 1998-2000 | ECU | HP Tuners | ||
| Sonoma | 2001-2004 | ECU | HP Tuners | ||
| Sonoma | 1998-2000 | ECU | HP Tuners |
About GMC 4.3 tuning
We tune the GMC 4.3 in 16 applications across the Jimmy, Safari, Savana, Sierra, Sonoma, from 1998-2023, in gasoline form. Calibrations are written on HP Tuners for your exact hardware and fuel, then proven on our Dynojet 424xLC2 in Jenison, MI. Remote tuning is available for supported applications.
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.