Operation CHARM
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GMC Truck
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1993
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G 2500 3/4 Ton Van V8-305 5.0L
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Repair and Diagnosis
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Transmission and Drivetrain
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Automatic Transmission/Transaxle
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Description and Operation
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4L60-E Automatic Transmission
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Control Signals - Inputs
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Calibration ID
Calibration ID
This input displays the PCM current calibrator PROM. It is very important the PCM contains the latest released calibration.