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Home >> GMC >> 1990 >> Forward Control 6.2 J, Automatic, 400/M40 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Standard & Electronic >> Description & Operation >> Shift Light Operation >> C, K, S & T Series (M/T)

C, K, S & T Series (M/T)

This light will show when to upshift for best fuel economy at any acceleration. Disregard light during downshift. ECM controls when SHIFT light illuminates.

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