The computer model number is GM/GMC OEM Model Delphi # 12200411 (Red/Blue connectors)

The GM Gen 3 computer will arrive ready for your LS swap application.

The Tune is for a stock 1999-2002 L59 FLEX FUEL engine (VIN Z) with a 5.3L / 4L60E drive train. It is for the DBC / Drive by Cable - Mechanical throttle body. This will work for the 1999-2002 Mechanical / Cable Throttle Body L59 engines.

No core required and no additional core charge.

I only sell units with a Stock Tune to prevent damage.

The Following has been done:

- V.A.T.S.

- Speed Limiters set to Maximum

- Power Enrichment is Active

- Dual electric fans Enabled

 - Fan 1: On@195   Off@185

 - Fan 2: On@ 215  Off@205

If you'd like to use the speedometer output from the computer, include a "Note to Seller" when purchasing that includes your rear axle ratio and your rear tire size or rear tire diameter in inches. The speedometer output isn't necessary for the computer to operate the engine, it's only necessary for the correct speedometer reading.