Chevrolet Silverado ECU Clone Service

What this service is

A Chevrolet Silverado ECU clone avoids the dealer Tech2 / GDS2 / MDI reprogramming session normally needed after an ECM swap. We read the original controller’s flash and EEPROM — including the Theft Deterrent Module secret, VIN, and odometer — clone it onto a matched donor, and ship it back ready to plug and start.

Clone-only service — you supply both ECUs. This service requires two units: your failed original ECU and a matching donor ECU (same manufacturer part number and hardware revision), both supplied by you. We clone your original’s data onto your donor and ship it back. Not sure which donor matches? Email us a photo of your failed ECU label first and we confirm compatible part numbers before you buy a donor.

How to source a compatible donor

The donor does not need to come from a car with the same VIN or mileage — after cloning it carries your original data. What it does need to match exactly:

• Same manufacturer part number on the label
• Same hardware revision suffix (AA / AB / AC, or PCB rev number where printed)
• Same Bosch / Continental / Delphi / Denso hardware code where applicable

Good donor sources: eBay Motors, Car-Part.com, local salvage yards with parts-lookup, and make-specific forums / Facebook groups. Send us the label photo before you buy and we’ll pre-clear it.

Silverado ECU platforms by platform / engine

• GMT800 (1999–2006)
  • 4.8 / 5.3 / 6.0 LS-series gas — Delphi PCM 0411 / E38
  • 6.6 Duramax LB7 / LLY — Bosch EDC15M / EDC16C39
• GMT900 (2007–2013)
  • 4.8 / 5.3 / 6.0 / 6.2 L-series gas — GM E38 / E67
  • 6.6 Duramax LBZ / LMM — Bosch EDC16C39
  • 6.6 Duramax LML (2011–2016) — Bosch EDC17CP44
• K2XX (2014–2018)
  • 4.3 / 5.3 / 6.2 EcoTec3 gas — GM E92 / E80
  • 2.8 Duramax (Colorado engine fitted to some Silverados) — Bosch EDC17C69
• T1XX (2019–present)
  • 2.7 L3B turbo four — GM E99
  • 5.3 / 6.2 L-series / 8-speed/10-speed — GM E98
  • 3.0 Duramax LM2 / LZ0 — Bosch EDC17CP68
  • 6.6 Duramax L5P — Bosch EDC17CP68
  • Silverado EV — dedicated Ultium VCU + battery controller

Common Silverado part-number prefixes

GM ECMs carry part numbers like 12xxxxxx or 121xxxxx (E38, E67, E78, E80, E92, E98, E99). Bosch-supplied diesel units add 0 281 0xx xxx. The ECM’s broadcast code / service number (stamped on the label) plus the Theft Deterrent System (TDS) VIN match is what lets the clone start without a Tech2 relearn.

How the Silverado clone works

1. Email us the label first (recommended). Send a photo of your failed ECU’s part-number label and we confirm the exact donor part numbers that will work — before you spend money on a donor.
2. You source a matching donor. Buy a compatible used ECU yourself through eBay Motors, Car-Part.com, or a salvage yard with parts-lookup. Must match manufacturer part number and hardware revision.
3. Mail us BOTH units together — your failed original ECU AND the matching donor you sourced, shipped in the same box with your order number. Prepaid return label available on request.
4. We bench-read your original — full flash plus EEPROM (immobilizer secret, VIN, mileage, learned values) captured intact. Most “dead” units can still be read on the bench.
5. We clone onto your donor — your donor is blanked, then your original’s flash and EEPROM are written one-for-one.
6. Bench verification — every clone is simulated before it ships. Immobilizer bytes, VIN string, and odometer confirmed to match.
7. We ship your cloned donor back — 24-hour turnaround from when both units arrive. Plug in, turn the key, drive.

What’s preserved

• TDS / Passlock immobilizer pairing — existing keys work
• VIN across ECM, BCM, instrument cluster
• Mileage, fuel trims, transmission learn (6L80, 8L90, 10L80, 10L1000 Allison)
• Injector flow-rate codes (Duramax LB7 and onward)
• DEF quality / SCR data on LML and L5P

Pricing and warranty

$200 flat. Clone work only — donor ECU must be supplied by you. Mail-in nationwide. 24-hour bench turnaround. 12-month warranty. Photo of the ECM label plus your Silverado year, trim, and engine RPO code (LB7, LLY, LMM, LML, L5P, L86, L83, etc.) — we confirm compatibility first.

Watch how our bench service works

How our ECU clone service works. Bench demonstration on GM — the read/write method is identical on your Chevrolet.