Have a failed, damaged, water-damaged, corrupted, or non-communicating GM E78 Engine Control Module (ECM)?

You send us your original E78 ECM, and we provide a compatible remanufactured E78 replacement ECM. We transfer the applicable vehicle-specific data and configuration, professionally program and bench test the replacement, and return it ready for installation where supported.

YOU SEND YOUR ORIGINAL E78 — WE PROVIDE THE REMANUFACTURED ECM

No donor or replacement ECM required.

Lacorte Automotive supplies the compatible remanufactured E78 ECM, backed by our 3-Year Warranty.

SUPPORTED GM APPLICATIONS

Supported applications may include select:

• Chevrolet
• GMC
• Buick
• Cadillac
• Other GM applications equipped with the E78 ECM

Exact compatibility depends on your original ECM's GM service number, part number, hardware/software version, engine, transmission/application, model year, production date, and vehicle configuration.

Not sure? Send us a clear photo of your original E78 ECM label and VIN before ordering.

COMMON E78 ECM FAILURE SYMPTOMS

A failing E78 may potentially cause:

• Crank but no start
• Intermittent no-start
• Engine stalling
• Rough running / misfires
• Reduced engine power
• Limp mode
• No communication with ECM
• Intermittent communication
• Injector-related faults
• Ignition-related faults
• Electronic throttle faults
• Sensor circuit faults
• Multiple unrelated DTCs
• Internal ECM faults
• Corrupted software or calibration data
• Water or moisture damage
• Internal electronic failure
• Completely non-responsive ECM

Proper diagnosis is strongly recommended. Wiring, grounds, power supplies, sensors, injectors, ignition components, throttle components, fuel-system issues, and other vehicle systems can produce similar symptoms.

WHAT YOU SEND

YOU SEND:

• Your original GM E78 ECM
• Vehicle VIN
• Year / Make / Model
• Engine
• Order information
• Required proof of ownership

NO REPLACEMENT ECM REQUIRED

We provide the compatible remanufactured E78 ECM.

WHAT'S INCLUDED

• Compatible Remanufactured GM E78 ECM
• Applicable original ECM data transfer
• VIN configuration
• Vehicle-specific configuration
• Software/calibration transfer where applicable
• Professional programming
• Data-integrity verification
• Professional bench testing & verification
• Plug & Play preparation where supported
• 3-Year Warranty
• Typical 1–2 business day turnaround

HOW IT WORKS

1. YOU SEND

Ship us your original GM E78 ECM.

2. WE PROVIDE

We select a compatible remanufactured E78 ECM for your application.

3. WE PROGRAM

Applicable original vehicle data and configuration are transferred/prepared for the replacement.

4. BENCH TESTED & VERIFIED

The completed remanufactured E78 is professionally bench checked and verified before shipping.

5. WE SHIP IT BACK

Your completed remanufactured E78 and applicable original components are securely returned.

6. READY TO INSTALL

Your replacement is prepared for installation where supported.

3-YEAR WARRANTY INCLUDED

Every remanufactured E78 ECM supplied through this service includes our 3-Year Warranty against defects in the supplied remanufactured ECM and our workmanship, subject to applicable warranty terms.

PLUG & PLAY WHERE SUPPORTED

Our goal is to return your E78 prepared for the original vehicle with the applicable configuration already transferred.

Certain applications may still require vehicle-side setup or relearn procedures. Exact Plug & Play capability depends on the specific vehicle and ECM configuration.

TYPICAL 1–2 BUSINESS DAY TURNAROUND

Typical turnaround is 1–2 business days after receiving your original E78, subject to module condition and replacement availability.

Same-day rush service may be available.

SIMPLE BREAKDOWN

YOU SEND:

Original GM E78 ECM

WE PROVIDE:

Compatible Remanufactured GM E78 ECM

YOU RECEIVE:

Programmed & Bench-Tested Remanufactured E78 ECM

WARRANTY:

3 YEARS

PROOF OF OWNERSHIP REQUIRED

Please provide:

• Government-issued photo ID
• Vehicle title or current registration
• Vehicle VIN

Documentation must correspond with the vehicle being serviced.

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LACORTE AUTOMOTIVE

GM E78 REMANUFACTURED ECM REPLACEMENT

CHEVROLET • GMC • BUICK • CADILLAC

YOU SEND: ORIGINAL E78 ECM

WE PROVIDE: REMANUFACTURED & PROGRAMMED E78 ECM

3-YEAR WARRANTY • PLUG & PLAY WHERE SUPPORTED • BENCH TESTED • 1–2 BUSINESS DAY TURNAROUND