1987-1995 General Motors SUVs and light trucks with throttle body injection systems used a variety of service numbers. BluePrint Engines requires information from the electronic control module (ECM) label to provide an appropriate EPROM calibration chip required by the the higher-performance engine
The information needed to select the correct EPROM for your new BluePrint Engine SUV and light truck engine is included on the label on the outside of the engine control module (ECM) shown below:
Please copy the numbers or have the ECM available when you order your BluePrint Engines base engine. If you have any questions, contact BluePrint Engines by phone or email for additional information.
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