GM E66 ECM Service (Global B)

• Your upgraded E66 ECM can only be tuned via the OBDII port with an MPVI3 or MPVI4 interface and the latest version of VCM Suite (BETA) (MPV2+ and older generation devices are not compatible with any GM Global B vehicle support).
• While the stock ECM is being serviced at HP Tuners, a spare ECM cannot be temporarily installed and relearned in the vehicle otherwise the stock (now upgraded) ECM that was sent in for service will no longer function in vehicle.
• Once the upgrade is complete, users must license their ECM for (6) Universal Credits (sold separately).
• No other tuning or calibration tools can be used with the ECM (including dealer reflash tools).
• VCM Scanner, dealer diagnostic, and other diagnostic tools will continue to function normally.
• The latest version of VCM Suite can be used to return to stock calibration and/or update to the latest stock calibration.
• There is no need for an IMMO relearn, crank relearn, or the “Replace ECM” function as long as the ECM returns to the same vehicle it came from.
• Processing time for this upgrade service does not include shipping time. Current service times can be found here.

Step 1: Once you’ve confirmed your vehicle’s support, purchase this upgrade service. Make sure you have an MPVI3 or MPVI4 interface.

• If you’re new to HP Tuners, purchase a brand new MPVI4.

Step 2: After placing your order with the necessary information, see the “Shipping” tab for a shipping form and address. Fill out and print this form to place in your shipping box. You will also receive an email immediately after placing your order with this shipping form and address.

Step 3: Remove the ECM from your vehicle and safely package it. Then, package your ECM safely with the shipping form.

Step 4: Write your order number on the outside of the shipping box.

Step 5: Ship your ECM to HP Tuners using any carrier you prefer. The shipping address can be found on this page and in the email discussed in Step 2. Shipping costs are the responsibility of the customer.

Step 6: HP Tuners will upgrade your ECM for tuning and diagnostics. Then, we’ll ship it back to you.

Step 7: Once you receive your upgraded ECM, install it back into your vehicle. Then, license the upgraded E66 ECM by purchasing [6] Universal Credits (sold separately). Once licensed, start tuning with your MPVI3 or MPVI4 interface and the latest version of VCM Suite BETA.

Send your stock GM E66 ECM to the following shipping address:

HP Tuners, LLC
ATT: GM E66 ECM Service (Global B)
711 Dartmouth Lane
Buffalo Grove, IL 60089

Controller Service Processing Estimates

After purchasing this service, please fill out the shipping form below and place it inside your shipping box. Please also write your order number on the outside of the shipping box where it is visible.

PRINT SHIPPING FORM

Instructions on Shipping Your Controller to HP Tuners (International Shipments Only)

To avoid unnecessary tariff charges on shipping your controller to HP Tuners for servicing, please see the PDF linked below with instructions for the most popular carriers, UPS, DHL, and FedEx. Note: If you are within the US, your shipment will not be impacted by tariffs.

AVOID INTL TARIFF INSTRUCTIONS

⚠️ NOTE: Any hardware ordered with this product will be shipped along with your upgraded ECM. To avoid any delays should you require other hardware soon, please order that hardware separately.

⚠️ NOTE: Customers are responsible for shipping costs when sending HP Tuners your ECM/PCM/TCM. The shipping charge at checkout only covers returning your control module after modification.

• These ECM/PCM/TCM services are completed at the owner’s risk. HP Tuners will not be responsible for the vehicle, its powertrain, or electronics, nor how the control module is used, calibrated, and its functionality.
• Due to the factory location of the PCMs in the vehicle, all PCMs will exhibit signs of weathering and wear, which is completely normal.
• When utilizing this service there is a possibility that the vehicle will need to be sent to the dealers to be re synced. Purchaser accepts all liability for this activity.

Should you experience any issues with your PCM, please submit a ticket to our support team for assistance on how to proceed.