GM service built for people who actually drive their cars.

It depends on the work performed and how your dealer interprets modifications. We build packages that keep emissions equipment in place where required and document every change. Many of our clients maintain factory powertrain coverage on mildly modified cars, but it is ultimately at the discretion of the dealer or warranty provider. If warranty preservation is critical, tell us up front and we’ll outline safe boundaries.

Yes. We routinely inspect and refine existing tunes from other shops and remote tuners. Our standard process includes pulling the current calibration, reviewing logs, and then agreeing on whether to keep, adjust, or replace it. If you have a tuner you love, we can coordinate dyno time and data so they can update your file with proper feedback.

Please arrive with at least half a tank of the fuel you intend to run (especially for ethanol blends), no active check-engine lights you haven’t told us about, and reasonably fresh fluids. Remove loose items from the cabin and trunk. If the car is extremely low, let us know ahead of time so we can prepare ramps and loading boards.

Absolutely. For trucks and SUVs used for work or towing, we prioritize uptime. We can cluster services into single visits, pre-stage parts, and offer early/late drop-off. For fleets, we can design a rolling schedule so that only a small portion of your GM vehicles are off the road at any given time.

We start with a deep intake: current mod list, dyno sheets, and any issues you’re experiencing. From there we perform a health check focusing on known weak points and how the car was put together. Many of our favorite builds started as "problem children" that we re-engineered into reliable, repeatable setups.