Description
GM Global A E90 ECM Unlock & Tuning Service – Silverado / Sierra
Unlock Full HP Tuners Access for Your 2019-2022 Chevy Silverado or GMC Sierra – Disable DFM & More.
Mail in your ECM or drop off in Atlanta for a one-time unlock + optional custom tuning. Eliminate Dynamic Fuel Management annoyances, remove speed limits, and unlock real performance gains.
Supported Vehicles & ECM
- 2019–2022 Chevrolet Silverado 1500 & GMC Sierra 1500 (5.3L L84 & 6.2L L87 engines)
- GM Global A E90 ECM (pre-facelift / non-Global B models)
Requirements
- Remove and send your ECM (or bring to our Atlanta shop)
- Requires HP Tuners MPVI interface for post-unlock flashing
- Local removal/reinstall labor: $150
Shipping Instructions (Mail-In)
- Purchase the Service
- Fill out the service form (place the order first, you need your order # to complete the form). There is also link to this form in the main menu of the website.
- Remove ECM (under hood, driver side, under intake box)
- Package securely with padding
- Ship to:
PCM Tuners
[YOUR ORDER NUMBER]
367 N Clarendon Ave, Unit 7
Scottdale, GA 30079
Turnaround Time
- 1–3 business days after receipt
- Tracked USPS return shipping (included)
- Rush options available – contact us
Pricing
| Service | Price |
|---|---|
| E90 ECM Unlock – Includes the cost of the 6 HP Tuners Credits (value of $300) | $450 |
| Edit Basic Settings- Add DFM Disable, Speed Governor removal, DTC Disable | Free |
| Premium Tune – Everything in basic tuning, plus we add power, torque, and throttle response | +$150 |
| ECM Removal + Reinstall (Atlanta shop) | +$150 |
What This Unlock Enables
- Full read/write with HP Tuners VCM Suite
- Custom tunes for power, drivability, towing
- DFM (Dynamic Fuel Management) disable for constant V8 power
- Speed limiter removal, throttle optimization, and more
Ready to transform your truck? Order now and feel the difference – smoother power, no DFM hesitation!
CHOOSE YOUR SERVICE LEVEL
1) ECU Unlock
- ECM unlock for HP Tuners access
2) Basic Tune Options – Add These Custom Adjustments
Build on the unlock with targeted edits for better daily driving and performance:
- DFM/DFM Disable – Keeps full V8 mode always active for smoother acceleration and reduced wear
- Speed Governor Removal – Raise or eliminate top speed limiter
- Other Basic Settings – Adjust rev limiter, tire size calibration, DTC deletes, etc.
3) Premium Service, Full Performance Tune – Max Power & Drivability
Our premium custom tune optimizes everything for real-world gains on stock hardware (premium 91/93 octane recommended):
- Includes all Enhanced Tune Options above
- Optimized ignition timing, air/fuel ratios, torque management, power enrichment, better throttle response
- Estimated gains (typical wheel numbers, stock setup):
- 5.3L – +22 HP / +25 TQ
- 6.2L – +25 HP / +28 TQ
- Gains vary by setup/conditions and are estimates from world results from similar vehicles
| 🔑 Primary Keywords | |
|---|---|
| GM E90 unlock | Silverado ECM unlock |
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| 2019-2022 Sierra tuning | Speed limiter removal GM |
| Atlanta GM tuning service | E90 ECM tuning |
Fast • Reliable • Atlanta-Based • Thousands of Happy Customers
