Operation CHARM
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Chevy Truck
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1992
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G 30 Van V6-262 4.3L VIN Z
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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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4L80-E Automatic Transmission
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Inputs
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Turbine Speed
Turbine Speed
Turbine speed is set to input speed when the transmission is in 1st, 2nd and 3rd. When the transmission shifts into 4th, turbine speed is calculated by multiplying input speed by a precalibrated value.