Silverado & Sierra tune. Nashville.
Half the trucks in Nashville run a 5.3 or 6.2 that GM calibrated for economy scores, not for how a truck actually gets used. Our Stage 1 flash wakes up the throttle, sharpens timing, and shuts off the AFM/DFM cylinder deactivation that kills lifters on these engines. One thing to know up front: 2019-2023 gas trucks ship with a locked ECM, so we handle the GM ECU unlock in-house before we tune - one drop-off, both jobs done under our roof.
Every Carma tune includes.
Real prices, no dyno-number runaround. Here's what comes with every flash — at no extra charge.
What we do for the GM trucks.
Stage 1 on these trucks is a $599 same-day flash. We recalibrate spark timing and fueling for real-world 93 octane, open up the throttle mapping GM softened for drivability scores, disable AFM/DFM entirely, and - on 10-speed trucks - recalibrate the 10L80 so it stops hunting and starts holding gears. You drop off in the morning at 1035 3rd Ave S and drive home the same day in a truck that feels decisive everywhere: off the line, mid-pull, and with a trailer on.
The 5.3L L84 and 6.2L L87 share their LT-family architecture with the Camaro SS we tune - direct injection, high compression, and a lot of calibration headroom GM left on the table to hit emissions and economy targets. The biggest win here is not even the power: disabling DFM removes the constant lifter cycling behind most of the major engine repairs we see on this platform. If you are cross-shopping the Ford side, we run the same playbook on the F-150; and when bolt-ons stop being enough, our in-house LS head porting and engine building take a 6.2 well past what a flash alone can do.
- Stage 1 flash - $599, same day
- AFM/DFM cylinder deactivation disabled
- 10L80 trans calibration - firmer, smarter shifts
- Tow-safe timing with factory thermal margins kept
- Free re-flash every time you add a mod
- Free return-to-stock and 48h refundable booking
Pricing for the silverado & sierra.
Mods we pair with this tune.
Stage 1 is where these trucks start, not where they end. Every mod you add gets a free re-flash, and when the parts list outgrows a flash we scope Stage 2 by call or build a custom dyno map from $1499.
- Cold air intake — Cheap airflow for a direct-injected V8 - we adjust the fueling trims so the gain actually shows up.
- Cat-back exhaust — The 6.2 deserves to be heard - no re-tune required, but we clean up the map at your free re-flash.
- Long-tube headers — The biggest bolt-on gain on a 5.3 or 6.2 - needs a proper recalibration, which Stage 1 customers get free.
- Cam + DFM delete kit — The permanent fix for the lifter problem - we do the mechanical work and the custom dyno map in-house.
- Supercharger — A Whipple or ProCharger on a 6.2 makes a work truck genuinely quick - custom dyno-mapped territory, $1499+.
No dyno-number games, no hard sell. Drive it, and if the tune isn't for you, we revert to stock at no charge. That's how confident we are in the map.
Common questions.
My truck is a 2019-2023 - why do I need an ECU unlock first?
GM locked the E90/E93 ECM on 2019-2023 gas trucks, so nothing can be flashed until the controller is unlocked. We do that in-house for $600 - it is a drop-off service, and we flash your Stage 1 tune the same visit. You never ship your computer anywhere or deal with a second shop.
Does the tune really turn off AFM/DFM, and why should I care?
Yes - we disable cylinder deactivation in software so the engine runs all eight cylinders all the time. AFM/DFM lifter failure is the most common major repair we see on the L84 and L87, and shutting the system off removes the constant lifter cycling that wears them out. It will not heal a lifter that is already failing, but it is the best preventive move you can make on these engines.
Do you tune the 10-speed transmission too?
We do - the 10L80 gets its own calibration alongside the engine. Stock, it hunts between gears and upshifts early to chase economy numbers; we firm up the shifts, hold gears longer under load, and adjust converter lockup so the truck feels decisive instead of busy. On a heavy truck, the trans tune is half the transformation.
I tow with this truck - is the tune safe for that?
That is exactly what we calibrate for. We keep timing conservative under sustained load, preserve the factory thermal protections, and set the trans to hold gears instead of hunting on grades - the truck pulls harder and runs calmer with a trailer on. If you tow heavy regularly, tell us at drop-off and we will bias the calibration toward it.
Can you put my 4x4 on the dyno?
Our chassis dyno is 2WD only, so a 4WD or AWD truck cannot make pulls on it - and that includes most Tahoes, Yukons, and Escalades. Stage 1 does not need the dyno anyway; we verify with street datalogging and review the logs before you leave. 2WD trucks are welcome on the rollers - a session is $349.
Is the Tahoe / Yukon / Escalade tune the same as the trucks?
Same engines, same 10L80, same ECM - the platform tunes identically, and the 6.2 Escalade responds especially well. If your SUV falls in the locked ECM years, the same in-house unlock applies before we flash. Everything else - DFM delete, trans calibration, tow maps - carries straight over.
I have a 2014-2018 with the 5.3 or 6.2 - can you tune it?
Absolutely - the L83 and L86 respond to the same recipe, and those ECMs were never locked, so it is a straight same-day flash with no unlock fee. AFM delete matters just as much on those engines. If yours has the 8-speed, the trans calibration also calms down the low-speed shift clunk that generation is known for.
Book your Silverado & Sierra tune.
Drop it off in the morning, drive it home tuned by end of day. 1035 3rd Ave S, Nashville, TN 37210 · Mon–Fri 8 to 5.