1990-1996 Corvette Analog Calibration IC (Adjustable) Preset for 8K TachThe analog calibration IC in your 90 96 instrument panel is a common source of problems. The factory part is a ceramic package which is easily damaged by heat and vibration. The results are the tachometer or other analog gauge reads significantly higher or lower than they should be. Another common symptom is that the tachometer pegs 8,000RPM, then dips past 0RPM. The replacement IC is made with modern low mass surface mount components to minimize the

The tachometer is still malfunctioning

Precut and marked replacement matte finish polarizing film for the front and rear of the LCD panel

Signs your board connector or bulbs may be defective

the colored portions of the display can be seen

Are the buttons showing white light through worn paint

Unfortunately

One or more of the telltale warnings around the cluster does not light up during the 2s lamp test when the key is turned on

23: R49 (R33 on older models)

2 - Diodes for Control Module Rebuild

You have replaced the internal board connector set and photocell

This is a set of six blocks:  four for mounting speedo and tachometer LCDs

including accuracy at each and every marked or numbered position