HP Tuners Tuning for GM Trucks & SUVs
Unlock the hidden power in your GM vehicle. Custom engine and transmission tunes done in-house — and backed by a love-it-or-do-not-pay guarantee.
Call 405.659.6419Why Tune?
Factory tunes are calibrated for a fleet — your truck is built for you. A custom tune dialed for your specific vehicle, fuel, modifications, and driving style is the single best dollar-per-horsepower upgrade you can make. And on the transmission side, it's the difference between a unit that fights you on every shift and one that responds instantly.
Wake Up Your 6L80 / 6L90
Sharper shift quality, firmer holds, smarter line pressure. Stop the slop, get the truck to drive like you wanted it to.
Fix the Lazy 8L90
Late-model trucks and SUVs left the factory with shift maps tuned for fuel economy testing — not the real world. A tune fixes that.
Make Your 6.0L Scream
LS-family motors respond beautifully to tuning. Real power gains, real driveability, real results.
Diesel Tuning
Duramax tuning available. Ask us about emissions-compliant options.
Built-Motor Tunes
Cammed truck, ported heads, forced induction? We build the tune to match what you've put in the engine bay.
E85 / Flex Fuel
Get the most out of corn. Custom flex-fuel tuning supported on most platforms.
Our Love-It-Or-Don't-Pay Guarantee
We're so confident in our tunes that if you're not happy with it, you don't pay. Period. Bring the truck back, we flash the stock file, and you walk away. No hard feelings.
That's only possible because we've spent thousands of hours behind HP Tuners on GM platforms. We know what works and what doesn't, and we won't hand you a tune we wouldn't put in our own trucks.
What's the Process?
- Talk to us first. Tell us what you're driving, what you've changed, and what you want it to do.
- Drop it off. Most tunes are same-day or next-day depending on shop load.
- Test drive. We dial it in on the road, not just on the bench.
- You drive it. If something's not right, you tell us — we adjust until it is.