GMC SIERRA 1500 6.2L V8 – STAGE 1 PERFORMANCE SOFTWARE
$999.00
Stage 1: 420HP → 448HP (+28HP) | 460 → 494 lb-ft (+34 lb-ft). Stage 2: 458HP / 513 lb-ft. ACDelco E92 Gen2 / E90. OBD flash. 100% reversible.
GMC SIERRA 1500 6.2L V8 (2019-2024) — STAGE 1 & STAGE 2 PERFORMANCE TUNE
6.2L EcoTec3 L86 V8 — ACDelco E92 Gen2 / E90 — OBD Flash
SKU: AMT.GMC.SIR.62.STG1
Performance Gains
| Specification | Original | Stage 1 | Stage 2 |
|---|---|---|---|
| Power (HP) | 420 | 448 (+28 HP) | 458 (+38 HP) |
| Torque (lb-ft) | 460 | 494 (+34 lb-ft) | 513 (+52 lb-ft) |
Required & Recommended Parts
| Tune | Required Parts | Recommended Parts |
|---|---|---|
| Stage 1 | — | Performance air filter |
| Stage 2 | — | Sport exhaust, performance intake, headers |
Overview
The Sierra 6.2L is a high volume truck tuning product where outright peak gains matter less than torque delivery, throttle response, and transmission behavior. GM leaves substantial torque management and shift softness in the factory calibration, so the drivability improvement is often more noticeable than the dyno increase. It is especially attractive in Canada because it combines daily use, towing duty, and a very large installed base.
Key Features
- Torque management reduction is a core benefit
- transmission calibration materially improves shift feel and towing response
- large Canadian installed base
- moderate but real NA power gains on 91 octane
- strong retail and dealer volume candidate
Vehicle Specifications
| Parameter | Specification |
|---|---|
| Production Years | 2019-2024 |
| Engine | 6.2L EcoTec3 L86 V8 |
| ECU Type | ACDelco E92 Gen2 / E90 |
| Flash Method | OBD |
| Time Required | Same day (OBD flash) |
Programming Instructions
This vehicle is tuned via OBD port flash — no ECU removal required.
- Locate the OBD-II port (under the dashboard, driver’s side)
- Connect the AMT Tuning flash tool to the OBD port
- Follow the prompts to read your stock file (approx. 15–30 minutes)
- Send the stock file to AMT Tuning — we will prepare your custom tune
- Flash the returned tune file — your vehicle is ready to drive
- To revert: your original stock file is saved and can be flashed back at any time
Shipping & Contact
AMT Tuning Ltd, 6-25 Edilcan Drive, Concord, Ontario L4K 3S4 Canada
Phone: +1 877 469 9440 | Email: sales@amttuning.com
| Make | GMC |
|---|---|
| Vehicle Make | GMC |
| Model | GMC Sierra 1500 6.2L V8 |
| Production Year | 2019-2024 |
MAECENAS IACULIS
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ADIPISCING CONVALLIS BULUM
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