Operation CHARM
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GMC Truck
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1983
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W Sprint/Caballero V8-305 5.0L
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Sensors and Switches - Computers and Control Systems
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Transmission Position Sensor/Switch
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Description and Operation
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3RD and/or 4TH Gear Switch
3RD and/or 4TH Gear Switch
These switches are located in the transmission. They are open when transmission is shifted into the relative gear and closed under all other conditions.