Not sure which 1999 Chevy C/K 1500 Performance Chips & Programmers are right for you? We have over 7429 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I can feel the difference in the shift pressure and torque of my truck alot. The shift points are wider and I was able to raise my top speed to a max of 125mph. Good buy, and great price." —Colton C from Humble, TX bought a DiabloSport PC Interface - USB Cable Kit for a 1999 Chevy C/K 1500.