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Home >> GMC >> 1990 >> Forward Control 7.4 N, Automatic, 475/M40 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Standard & Electronic >> Testing >> Speedometer/Odometer Testing >> Speedometer Noisy Or Sticking (P, R & V Series)

Speedometer Noisy Or Sticking (P, R & V Series)

Check for kinked, pinched or burnt cable casing. Check for bent speedometer cable tips, insufficient lubrication of cable, rough drive gear in transmission or reduction gear adapter box.