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Home >> GMC >> 1992 >> Forward Control 5.7 K, Standard >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - A/T >> Testing & Diagnosis (REATTA, Riviera, TORONADO & TROFEO) >> Status Light Indicators >> OFF or VENT

OFF or VENT

Indicator light will be on when ECM commands 4th gear. Light should only be on in 4th gear.



Indicator light will be on when BCM commands air recirculation.

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