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  • 17 Digit Vehicle Identification Number.

    Must be exactly 17 digits, 9th digit must be 0--9 or 'X', and cannot contain characters 'I', 'O', or 'Q'.

    We recommend acquiring the VIN directly from the vehicle's VIN Plaque on the dash, or the certification label in the door jamb since insurance and service documents are sometimes incorrect.

  • For product related questions, please contact support prior to purchasing: Contact Us

  • Support is not officially provided for aftermarket hardware with this calibration, however many hardware components which would normally work without any specific adjustment on the factory calibration may be automatically compatible.

    Examples include:

    -Most Exhaust components

    -Recirculated turbo bypass valves

    -Most brand name intakes (ONLY with any included resonator/venturi designed to prevent the intake from setting any DTCs (Diagnostic Trouble Codes).

    If you are not sure whether your hardware is compatible with TRIFECTA Advantage, please Contact Us for assistance!

About 2018--2019 GMC Terrain - 2.0L Turbo - Advantage

TRIFECTA 2018+ GMC Terrtain
2.0L Turbo
9-speed automatic


Detailed power gains (measured at the wheels, dynojet chassis dyno)


2.0L gains: up to +48 ft-lbs torque, +49 horsepower (peak gains of up to 43 ft-lbs torque, +42 horsepower)


TRIFECTA's 2018+ Terrain recalibration is complimented by a fully developed 9-speed automatic transmission calibration to support the increased power delivery profile and to offer dramatically improved driving characteristics for everyday driving maneuvers. The complete powertrain calibration also includes ESC (Stabilitrak) program enhancements.


Specifications of the TRIFECTA Performance 2018+ Terrain ECM software reprogramming:


-Fuel economy is improved dependent on fuel grade and driving conditions
-Retains all GM OE diagnostics and ECM functionality
-Retains all OE error code reporting and functionality
-Emissions readiness checks are present; emissions compliant
-Maintains functionality of ABS and TC systems
-Knock detection mechanisms and OE engine knock detection sensitivity is retained
-Return to stock functionality included with flash loader
-Tested on all available grades of fuel (87, 89, 91, 92, and 93 octane).


Specifications of the TRIFECTA Performance 2018+ Terrain 9-speed automatic transmission TCM calibration software reprogramming:


- "T87A" 9-speed automatic transmission controller does not need to be removed from the vehicle or "unlocked"
-Improved shift times in adverse shift patterns
-Improved shift logic - shifts are progressive and purposeful
-Does not shorten transmission life or increase cooling requirements
-Retains all OE diagnostics and TCM functionality
-Retains all OE error code reporting and functionality


Supplementary Featureset of the TRIFECTA Performance 2018+ GMC Terrtain powertrain calibration software reprogramming:


-TRIFECTA DSVM (Driver Selectable Vehicle Modes):


Modify driving profiles based on the cruise control enable setting (vehicles equipped with cruise control only)


Cruise Control ON (armed) = Vehicle responds to pedal input and shift logic similar to factory programming


Cruise Control OFF (disarmed / TRIFECTA mode) = Vehicle responds more aggressively to throttle input, shifts are optimized for performance*


* - Fuel economy observed in TRIFECTA mode was observed to be similar to original factory fuel economy figures assuming “regular” driving style is adhered to


-TRIFECTA PASM (Performance Auto Stop Mode):


When the cruise control subsystem is armed (via the steering wheel button), auto-stop works normally, just as it did from the factory. When the cruise control subsystem is disarmed, auto-stop events are re-calibrated with sport and performance strictly in mind (available only with vehicles equipped with cruise control from the factory).


Furthermore, the feature can be enabled and disabled at any time. For example:


If the vehicle is auto-stopped, switching the cruise control subsystem off causes the engine to restart immediately.


If the engine is running because no auto-stop event could occur due to the cruise control system being disabled, enabling it will cause the engine to stop immediately, provided all of the other auto-stop criteria are met as well.


This article discusses "PASM" in further detail:


TRIFECTA: Making Auto Stop more performance oriented. Meet Performance Auto Stop Mode.


2.0L Turbo LTG dyno (on 91 octane pump gas) (this vehicle is a 2018 GMC Terrtain with the 2.0L Turbo LTG engine) - stock wheels/tires




Installation Notes:


-Estimated installation time of ~20 minutes
-Premium fuel is recommended for maximum power output, but not required


Additional information and availability:


- This powertrain calibration includes a TRIFECTA powertrain calibration file specific to your vehicle and includes a flash loader device
- Powertrain calibrations currently exist for North American vehicles only, with more regions to follow


- Advertised gains are quoted as 'up to' and may be less for a vehicle operated at altitudes higher than near sea level.


The TRIFECTA Advantage Calibration is meant for 100% stock vehicles. No individualizations or support for parts that do not function on factory calibration (if you have such modifications, be sure to check with us prior to placing order).

Shipping Options

Shipping options and prices may vary depending on the total value of your order. Your final shipping price will be determined at checkout.

Options shown are based on your estimated location.

  • $15.00 - Ground (United States) (1-5 days)
  • $40.00 - 2nd Business Day (M-F, No Sat/Sun Delivery, US Only) (2 business days)
  • $80.00 - Next Business Day (M-F, No Sat/Sun Delivery, US Only) (1 business day)
  • FREE - I already own an EZ Flash cable. (Cable must have TRIFECTA logo sticker)

Shipping Size

  • Size
    8.69 in × 5.44 in × 1.75 in
  • Weight
    1 lb

Ryan Beyerlein


I got this for my 2018 GMC terrain Denali AWD was immediately impressed with how it changed the vehicle. It has a lot more power and shifts a lot smoother. This is definitely  worth the money and you will certainly be pleased with the outcome. it Front wheel drive mode this car will spin tires for days, it will even break free sometimes in AWD too. I look forward to seeing more mods to come out of trifecta and eventually plan on installing a cold air intake as well.


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