At GP Diagnostics, we are dedicated to providing high-quality diagnostics, ECM programming, and fleet maintenance solutions for the trucking industry. With years of hands-on experience and OEM-certified software, we help owner-operators and fleet managers reduce downtime, optimize performance, and ensure long-term reliability.

We work with individual truck owners, small businesses, and large fleet operators to deliver cost-effective and efficient services. Whether you're dealing with engine faults, transmission issues, or aftertreatment system failures, we have the tools and expertise to get you back on the road quickly.