Trailblazer Envoy 2002 Engine Computer ECM PCM 12571178 - Programmed to your VIN

  This PCM will fit the following applications:****** ************2002CHEVERLOLETTRAILBLAZER4.2L Engine w/ 4WD ( 4X4 )************ ************2002CHEVERLOLETTRAILBLAZER4.2L Engine w/ 2WD ( 4X2 )************ ************2002CHEVERLOLETTRAILBLAZER EXT4.2L Engine w/ 4WD ( 4X4 )************ ************2002CHEVERLOLETTRAILBLAZER EXT  4.2L Engine w/ 2WD ( 4X2 )************ ************2002GMCENVOY4.2L Engine w/ 4WD ( 4X4 )************ ************2002GMCENVOY4.2L Engine w/ 2WD (4X2)************ ************2002GMCENVOY XL4.2L Engine w/ 4WD ( 4X4 )************ ************2002GMCENVOY XL4.2L Engine w/ 2WD (4X2)************ ************2002OLDSMOBILEBRAVADA4.2L Engine w/ 4WD ( 4X4 )************ ************2002OLDSMOBILEBRAVADA4.2L Engine w/ 2WD ( 4X2 )************ **\*This listing is for the PCM with part number 12571178.   This was possible because each of these models received their specific programming from the factory.   In other words, you can't simply swap a used PCM from one vehicle to the next.   We are a** **licensed** **user of the same software that your local dealer would use to program and update your computer.   With your purchase, we will** **program** **the PCM to your VIN (vehicle identification number with the latest software updates available from GM.**** ****\*\*\*\*\*\*This PCM is used and was removed from a running salvaged vehicle.   This PCM comes with a 1-year** **replacement guarantee** **.   We have been in the PCM business for 15+ years.   The PCM that you purchase will be of like quality and finish as that shown.** **Other info:** **Why buy your spare PCM from us?You will be purchasing a high quality used PCM.You get free Flash programming with every OBDII GM computer purchased. OBDII type computers have the “chip” embedded into the PCM and it is not removable.The calibration file per the application is “Flashed,” or reprogrammed using a software package and a pass through device.The “chip” is no longer removed for programming.Proper programming is essential when replacing a PCM whether it is a used PCM or a remanufactured PCM.A used GM computer will have the software installed that pertains to the original vehicle that it was removed from.In some cases, GM OBDII type computers will interchange with many different vehicles including those with different engine and transmission configurations.However, unless the computer is programmed with the correct software it won’t function properly upon installation.We will flash program the computer purchased from us with your specific VIN number for the latest updated calibrations available for a stock calibration.This is important to ensure specific vehicle programming and to guarantee flawless performance in your vehicle.

• Manufacturer Part Number: 12571178
• Brand: Factory/OEM
• Fitment Type: Direct Replacement
• Interchange to:: 19210066
• Manufacturer Warranty: 1 Year