How to Add Horsepower to a GMC Sierra

by Asad Mohammad; Updated November 07, 2017

The GMC Sierra is a full size pickup truck developed by General Motors. It is a popular brand and its specifications are easily upgradeable, thus allowing for vast improvements in performance. Augmenting the vehicle's horsepower is a simple process and can be completed in a number of steps.


Install a new computer chip. This will change the engine's programming and will free up more horsepower. This is a quick way to improve the vehicle's performance.

Install an aftermarket exhaust system. This is usually comprised of a larger tail pipe and header. As a result the exhaust will exit the engine faster and allow for improved combustion and energy production.

Install a cold air intake system. This will allow cooler air to enter the engine and react with fuel. Cooler air is more dense and as a result has a larger concentration of oxygen. As a result there will be increased combustion and power generation.

Install a performance tuner. This is a device that changes the ratio of air and fuel mixture in the engine. As a result combustion rates will improve and horesepower gains can be seen.

About the Author

Asad Mohammad began freelance writing for various websites in 2010, bringing his expertise in medicine and health. His first publication occurred in 2008 when a case report and poster presentation were accepted at Nassau University Medical Center. He graduated from medical school in 2009 and is in residency. He holds a Bachelor of Arts in biology and economics from Binghamton University.

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