2006 Hummer H2 Repair Question
Topics covered: Engine, Exhaust, Performance.
Mileage: 124,017 miles.
Mileage: 124,017 miles.
Asked on December 22, 2012
Hummer H2 Engine Problem
Does the GF Chips advertised actually boost performance by 60 horsepower, and if so will it affect most of the other components of the engine (transmission shift, exhaust flow, traction control adjustment)?????