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Up Shift Indicator Does Not Operate Properly

Using scan tool, monitor normal mode communication between Powertrain Control Module (PCM) and instrument cluster. If UP SHIFT T/T display does not match UP SHIFT indicator, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Recheck system operation. If UP SHIFT T/T display matches UP SHIFT indicator, locate and repair problem in PCM system. See appropriate TESTS W/CODES article in ENGINE PERFORMANCE section:

Recheck system operation.

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