GM E90/E93 ECM Services

Get your Silverado or Sierra ready to tune. The E90 and E93 engine computers in 2019 and newer GM trucks have to be upgraded before they can be tuned. With this send-in service, HP Tuners upgrades your original ECM so you can calibrate, data log and flash through the OBDII port. Choose your ECM above.

This is a send-in service. Your ECM has to come out of the truck and ship to HP Tuners, so the truck will be down while it's away. Please read this whole page before ordering.

Will it work on my truck?

• E90 ECM: 2019-2022 Chevrolet Silverado and GMC Sierra 1500 5.3L and 6.2L V8 (L84/L87), pre-refresh trucks only. Accepted service numbers: 12690388, 12703685, 12711852 and 12725132.
• E93 ECM: 2020-2023 Chevrolet Silverado and GMC Sierra 2500/3500 6.6L gas (L8T), and the 2021.5 Silverado/Sierra 1500 5.3L.
• Non-Global B trucks only. Refreshed 2022.5 and newer 1500s use the GM E90 ECM Service (Global B).

Would you rather not pull the ECM? E90 owners with an MPVI3 or MPVI4 can do the upgrade at home with the GM E90/T93 Upgrade Kit.

What else you'll need (sold separately)

• 6 Universal Credits to license the E90 or E93 ECM.
• An HP Tuners MPVI2, MPVI2+, MPVI3 or MPVI4.
• The latest VCM Suite BETA software (free from HP Tuners).
• Good to know: the T43 transmission controller found in many E93 trucks needs no unlock and is free to license.

How it works

1. Confirm your truck is covered and place your order.
2. Our team emails you the order number and the HP Tuners shipping form.
3. Remove the ECM, pack it carefully with the completed form inside, and write the order number on the outside of the box.
4. Ship it to HP Tuners with any carrier. Shipping to HP Tuners is the customer's responsibility; the shipping charged at checkout covers the return trip.
5. HP Tuners upgrades the ECM and ships it back. Allow 1-3 business days once it arrives, plus shipping.
6. Reinstall it, license it with 6 Universal Credits and start tuning.

Ship to:
HP Tuners, LLC
ATT: E9x ECM Service
[Your order number]
711 Dartmouth Lane
Buffalo Grove, IL 60089

Wait for our email before you ship. Please don't send your ECM until you have the order number and shipping form.

Before you ship: important

• ECMs with broken tabs will not be accepted, and the ECM must be fully functional with no physical or internal damage.
• No immobilizer relearn, crank relearn or "Replace ECM" procedure is needed as long as the ECM goes back into the same truck.
• Once upgraded, no other tuning or calibration tools can be used on the ECM, including dealer reflash tools. Scan tools and dealer diagnostics keep working, and you can return to stock any time with VCM Suite.
• ECMs live in a harsh spot on these trucks, so some cosmetic weathering is normal.
• Any other hardware on the same order ships with your ECM. Order it separately if you need it sooner.