GM Performance Parts

Known for our factory-quality wiring, we offer a selection of fan harnesses, transmission swap harnesses, and many more products to simplify your build. Our products are made in-house in the heart of North Carolina, and shipped worldwide!

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Performance Tuning

Dyno tuning and mail order tuning - take advantage of our years of experience and let us handle your tuning. We get the most out of your setup, safely, with an emphasis on great drivability.

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Performance Builds

Quality, honesty and communication are the pillars on which our family owned and operated business were built, and continue to operate on today. Whether your car is all stock or already modified, we can help you take it to the next level. Bolt-ons, cam installs, forced induction, engine swaps, and much more!

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News and Portfolio

Throughout the year we update our site with our most recent builds, tunes, and other knowledge we gather to share! We are happy to offer information that many other shops do not so you feel more comfortable with any plans you may be making for your vehicle.

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I've used PCM of NC a few times and I'm pleased with their service. Despite dealing with a somewhat unusual issue with my ECM, they continued giving input and helped us figure the problem out. I really appreciate their patience.

Not one issue I love you guys thanks so much. Thank you so much for all of you guys hard work and patience and dedication to make sure my car was done right, you guys are the best. I will continue to recommend PCM OF NC all to everyone I know and come across in the car community. So much love for you guys

I was referred to PCM by a friend who stated that they were the best in town and after doing business with them, I certainly agree. Kelly and her crew are extremely knowledgeable in every aspect of cars and was extremely helpful in guiding me in the right direction for my goals. The work done was top notch in a very reasonable time frame. The customer service after the work was done was also phenomenal. I highly recommend PCM for your car's performance needs.

I only have 2 short drives in my H3 since sending the PCM to be tuned. So far it seems to be MUCH smoother shifting, better acceleration and smoother idle. In a week or 2 I will see if the mpg increased as well. You received my PCM on Monday, did your magic and sent it back the next day. Great work!

Mark has been awesome to deal with. Got the initial tune very close to perfect. We are now on the second version of the tune and the truck is running great. Can't wait to get the final version. Highly suggest!

Put a DOD delete kit in our 07 Yukon 5.3 L. PCM of North Carolina did the tune for our computer and her transmission as well. Very fast turnaround rate, very satisfied and would recommend these people to anyone, the Yukon runs fantastic and it really woke it up. THANK YOU PCM OF NORTH CAROLINA!!!

I have purchased many parts from PCM of NC for my build on my 2010 GMC 2500HD. Electric Fan Conversion, Catch Can, Comp cam parts, Transmission cooler upgrade, Ignition Wires, etc.. I can say the quality of their parts is top notch. Not only that, they back up everything they manufacture and do not hesitate on that fact. With their products my engine stays clean, transmission stays cool, and I make more power with electric fans. I highly recommend their products and services!

These are great people to do business with I had a email tune done on my 2011 camaro. After having two other people and myself try to get this car driving right these guys nailed it down it just two tune files. Car has a decent sized cam for a street car and it drives so close to stock if not for the idel you wouldn't even know it was camed. If your on the fence about working with these guys just do it you will not regret it.

After dealing with many different speed shops in NC. I can honestly say hands down. PCM of NC, INC is the best. Customer service. Reliability. Communication. Parts. Staff. Tuning. You name it. It’s mind blowing how above and beyond they go for their customers.
Keep up the great work!

My visit to PCM of NC was amazing and a pleasure. Always great customer service! But it's just a different kind of energy why car folks get together and start talking cars.

What fantastic customer experience, I did a mail order tune and was communicated with every step of the way. The truck drives awesome now. Really stand up people.