GM Transmission Tune (HP Tuners)

Transmission tuning is one of the biggest drivability upgrades you can make—faster shifts, less hunting, better throttle response, improved lockup strategy, and a transmission that feels confident (not lazy or “confused”).

What We Change

Line pressure increases for firmer, cleaner shifts
Torque management optimization for faster, more consistent shift timing
Shift speed improvements (reduced time between gears)
Shift schedule refinement to reduce hunting and inconsistent behavior
Converter lockup strategy improvements for drivability, towing, and heat control
Tow/Haul optimization (when applicable)
Tap-shift refinement (when applicable)
10-speed torque modeling adjustments (when applicable)

Choose Your Shift Feel

Sport (Recommended)

The way the factory should have set it up: quicker shifts, consistent timing, better throttle response, less hunting, and coordination for common upgrades (cam, converter, etc.).

Aggressive (Very Firm)

Same strategy, but firmness turned up. This one bangs gears. Your passengers (and the uninformed) may think something is wrong—not for the faint of heart, this is FIRM.

Both options are the same price—choose the feel you want.

Standalone or Paired With an Engine Tune

Can be purchased standalone if you already have a tune.
Best results when paired with a PCM Tuners engine tune—engine + transmission calibrations work together.
If you’re tuned by someone else, results may vary (we’re tuning “behind/after” another calibration).

What You Need (Hardware + Credits)

This product assumes you already have HP Tuners hardware and the required credits. If you’re missing anything:

HP Tuners MPVI
(Uses Windows / VCM Suite OR Uses phone + TDN app )
HP Tuners RTD
(Uses phone + TDN app / simple remote flashing)
HP Tuners Credits

2019+ T93 TCM Unlock (If Applicable) $200

The 2019+ GM 8-speed/10-speed vehicles use a factory-locked T93 TCM that requires an unlock before tuning. We offer in-house TCM unlock (Atlanta local same-day possible; otherwise mail-in).

The T93 must be removed from the vehicle to perform the unlock. You can remove it yourself and bring/mail it to us, or we can do it for you. It is $140 for removal and reinstallation.

Important: Universal Credits (4 credits per TCM) are required separately to license the module for tuning and are not included in the unlock price.

HP Tuners Credits by Platform (Transmission Tuning)

Credit price reference: 1 Universal Credit is $50 (so 4 credits = $200).

1997–2014 GM (4L60 / 4L80 / 6L80 / 6L90): Credits for transmission tuning are “included” when you license the ECM/PCM. No additional HP Tuners credits are needed to tune the transmission. Just purchase our transmission calibration and you will be able to flash the transmission with the ECM/PCM credits you already have.

6L80 (T43) note: I get a lot of questions on this. The GM 6L80/90 6-Speed with the internal T43 TCM is always “included” in terms of credits required from HP Tuners. This applies to vehicles through model year 2020.

Platform	Typical Trans / Notes	HP Tuners TCM Credits	Credit Cost
Silverado / Sierra	8 & 10-speed requires TCM license	4	$200
Tahoe / Suburban	8 & 10-speed requires TCM license	4	$200
Yukon / Yukon XL	8 & 10-speed requires TCM license	4	$200
Escalade	8 & 10-speed requires TCM license	4	$200
Camaro (Auto)	8 & 10-speed requires TCM license	4	$200
C7 Corvette	8-speed requires TCM license	4	$200
Cadillac CTS-V	8-speed requires TCM license	4	$200

If you’re unsure what you have, don’t guess—contact us and we’ll tell you exactly what credits/unlock you need:
/contact/
678-862-3917

HP Tuners files

SCT files

Compatible products

Custom HP Tuners Calibration — File Only

Custom SCT Tune – File Only

GM Transmission Tune (HP Tuners)