GMC Sierra (1999 - 2007)

Select your engine to view performance gains and remapping options.

GMC Sierra engines supported for remapping, grouped by fuel type. Can't find yours? Contact us.

Petrol
4.3 V6 200hp4.8 V8 295hp5.3 V8 295hp6.0 V8 360hp
Diesel
6.6 Duramax 365hp