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1999
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Astro Van 2WD V6-4.3L VIN W
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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TFP Switch A/B/C
TFP Switch A/B/C
Range (ON/OFF)/(ON/OFF)/(ON/OFF)
The A/B/C Range parameter indicates the current state of the
transmission range switch
. These are pressure switches internal to the transmission.