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Home >> GMC >> 1991 >> C3500 HD 6.2 J, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - C/K Series Pickups >> Adjustments >> Notes

Instrument Panel - C/K Series Pickups: Adjustments: Notes

CAUTION: DO NOT touch calibration clip pins at back of instrument cluster as immediate electrostatic discharge damage to cluster will result.
NOTE: Speedometer must be replaced or recalibrated when rear axle ratio or tire size is changed.
NOTE: The calibration connector from Service Kit (25085515) should be used a maximum of 10 times. If speedometer has been previously recalibrated, it is not necessary to perform step  1. Follow instructions provided with service kit.