Increasing horsepower and torque is as simple as pushing a button with Hypertech's Power Programmer III. You simply plug the Power Programmer into the underdash diagnostic plug, answer a series of "Yes/No" questions, and the Power Programmer does the rest. The Power Programmer is much more than a tuning chip - it is a self-contained automotive tuning computer.
This part is designed to fit the following vehicles.
Chevy - Silverado - 1999
GMC - Sierra - 1999
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