Your Cart Is Empty

2003 GMC Sierra Performance Chips & Programmers

Have a Question?
Have a Question? Ask a product expert! (800) 874-8888 Live Chat
2 >

  • shipping icon
  • Not Rated Yet


View all reviews for this product

There are no customer reviews for this product

You may only compare up to 5 products at a time.
Please select at least two products to start comparing.
2 >

Latest Customer Reviews

Hypertech Max Energy Programmer Reviews

Hypertech programmer is a quality product.

Reviewed By Gary R (CASPER, WY) Reviewed for a 2003 GMC Sierra —3/29/2015 4:58 PM

Easy to set up. Easy to program vehicle. Better acceleration; better power; some increase in MPG. Almost like having a new truck.

View More Reviews

Edge Insight CS/CTS Monitors Reviews

Awesome product

Reviewed By Steven G (COCOA, FL) Reviewed for a 2003 GMC Sierra —10/14/2014 3:55 AM

Although smaller than I expected (the pictures make it look way bigger than it actually is) I really like this monitor. It is totally customizable. From the number of gauges to the background. Everything can be changed to the way you want it.

View More Reviews

Edge CTS Evolution Programmer Reviews

03 gmc sierra 2500hd diesel-6.6liter

Reviewed By matt f (SINKING SPRING, PA) Reviewed for a 2003 GMC Sierra —6/28/2013 10:04 AM

I'm from sinking spring pa, I ordered the cts on Thursday and received it Friday afternoon. Definitely great shipping. Installation was very easy, had a slight problem getting it to program my truck but called tech support and they instructed me very clearly what to do, followed their instructions and plugged unit back into my truck, followed the prompts and within minutes I was on the road. I currently keep it on the third power level, 18mpg round town, and pushing 24mpg highway

View More Reviews