Not sure which 2004 Chevy Silverado In-Line Modules are right for you? We have over 1502 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 ordered the stage 2 chip. It was easy to install it took about 15 min. I do'nt if it has improved my gas milage because I've been having to much fun driving my truck with all the extra power if you know what I mean!" —Ed G from Sterling Heights, MI bought a Jet Performance Module for a 2004 Chevy Silverado.
"Made a big difference in low in torque and could really feel a surge at 4000 rpm" —Joel P from Dadeville, AL bought a Jet Performance Module for a 2004 Chevy Silverado, 5.3L V8.
"Great product very good all around performance and better gas mileage what more can you ask for." —Tim W from Elkin, NC bought an Unichip Performance Chip for a 2004 Chevy Silverado.