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Chevrolet Silverado GMT K2XX – FL tune files, remaps & software solutions

2 engines · 2017–2017 · 3 ECU/TCU types · files for Autotuner, KESS3, Flex, Dimsport DFOX / New Genius, PCMflash, MMCFlash, BitBox and more

Custom files for the Chevrolet Silverado GMT K2XX – FL built in WinOLS from your own read — not a generic file pulled from a database. Send the read from your tool and Josh builds the calibration for your exact software version, usually back within 10–20 minutes during file-service hours (9am–9pm Mon–Sat AEST), and supports it afterwards. Typical Stage 1 figures are shown per engine below and confirmed per calibration.

Chevrolet Silverado GMT K2XX – FL 6.0 V8 Vortec petrol

Years2017
Stock power360 hp
Stock torque515 Nm
ECU / TCU types1
Stage 1 — typical+5% power / +5% torque → ~380 hp / 540 Nm

Controllers and read methods

  • Delco E78 MPC5566 AutotunerKESS3FlexDFOXPCMflashbFlashBitBoxBENCHBOOT (BETA)OBD

What we build for this engine

  • Stage 1 and Stage 2 calibrations built from your read
  • Pops and bangs, launch and rev-limit changes where the platform allows
  • Catalyst, flap and DTC work
  • WinOLS map packs and DAMOS where we hold our own definitions

Chevrolet Silverado GMT K2XX – FL 6.6 Duramax (L5P) diesel

Years2017
Stock power445 hp
Stock torque1234 Nm
ECU / TCU types2
Stage 1 — typical+20% power / +28% torque → ~535 hp / 1580 Nm

Controllers and read methods

  • Delco T87 TCU SPC564A80 AutotunerKESS3FlexDFOXPCMflashbFlashBitBoxBENCH
  • Delco T87A TCU SPC564A80 AutotunerKESS3FlexDFOXPCMflashbFlashBitBoxBENCH

What we build for this engine

  • Stage 1 and Stage 2 calibrations built from your read
  • Towing and economy files
  • DPF, EGR and AdBlue software solutions, DTC work
  • TCU shift-point, lock-up and torque-management tuning matched to the engine file
  • WinOLS map packs and DAMOS where we hold our own definitions

Chevrolet Silverado GMT K2XX – FL FAQ

Do you have a tune file for the Chevrolet Silverado GMT K2XX – FL?

Yes — for every engine and ECU listed above. Files are built from your own read in WinOLS for your exact software version, not supplied from a generic database.

How do I get a Chevrolet Silverado GMT K2XX – FL file?

WhatsApp the read to 0466 659 997 with the engine, ECU, your tool and what you want, or upload it at tacfiles.com for an automated return where a matching project exists.

What gains will a Chevrolet Silverado GMT K2XX – FL Stage 1 give?

Typical Stage 1 figures are shown on each engine card above — measured on our dyno where marked, otherwise the typical gain for that engine class. Final numbers depend on the calibration and hardware, so we confirm per file. Reliability comes first — files stay inside what the engine, injectors and cooling handle comfortably.

Send your Chevrolet Silverado GMT K2XX – FL read

WhatsApp 0466 659 997 with the engine, ECU, your tool and what you want. Hand-built files typically return in 10–20 minutes during file-service hours (9am–9pm Mon–Sat AEST).

Vehicle, ECU and read-method data compiled from the published compatibility lists of the flashing tools we work with (files are returned for Autotuner, KESS3, Flex, DFOX, PCMflash, bFlash, BitBox and more). Stock figures are manufacturer-published values as listed by those tools and may vary by market. All tuning files are intended for off-road, motorsport, agricultural or commercial use only; it is the responsibility of the vehicle owner to ensure compliance with local regulations.