Chevy Silverado Transmission

The Electronic Pressure Control (EPC) solenoid dictates shift characteristics by changing line pressure. The EPC receives orders from the VCM, which is continuously comparing sensor inputs against its stored algorithms and tables. In theory, this marriage of computer and transmission should provide the perfect line pressure for any situation; FLT has found in practice this is not always the case. The sophistication of the system is its Achilles' heel. An improperly oiled air filter is capable of bringing this system to its knees by oiling down the MAF wires and providing the wrong signal to the VCM, which can result in complete transmission failure. While FLT's approach may seem a step backwards, it removes several potential failure points and replaces them with the proven and dead-simple operation and reliability of a vacuum modulator. This is not to say the EPC solenoid should never be used; it will depend on your application.

Chevrolet Silverado Transmission - Way Beyond The Power

The Electronic Pressure Control (EPC) solenoid dictates shift characteristics by changing line pressure. The EPC receives orders from the VCM, which is continuously comparing sensor inputs against its stored algorithms and tables. In theory, this marriage of computer and transmission should provide the perfect line pressure for any situation; FLT has found in practice this is not always the case. The sophistication of the system is its Achilles' heel. An improperly oiled air filter is capable of bringing this system to its knees by oiling down the MAF wires and providing the wrong signal to the VCM, which can result in complete transmission failure. While FLT's approach may seem a step backwards, it removes several potential failure points and replaces them with the proven and dead-simple operation and reliability of a vacuum modulator. This is not to say the EPC solenoid should never be used; it will depend on your application. View Related Article

Chevy Silverado Transmission

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