When the 1984 Corvette was released, its digital dashboard was revolutionary. For the first time, information was delivered electronically and not by analog gauges or tell tale lights. For the most part, the digital dash has proven to be very reliable over the years, however the cluster can fail for various reasons. The main problems are poor grounds, corrosion on terminals and burnt-out bulbs. Since the LCD cluster was first introduced, it has been regarded as an Exchange-Only (No Repair) item by the dealer. This article will cover the three most common failures that you can repair yourself. Why pay $300.00 or more to have someone change a bulb or clean the terminals?

Changeable Parts And Cluster Repairs
Items that can be changed by the owner or dealer
• One or all four halogen 882 light bulbs on the 1984-88 are changeable by the owner. The 1989 cluster has Xenon bulbs,

which are replaceable with 7073 Stanley bulbs (not soldered in). The dealers do not have this bulb. I know of only two sources for them.
• Service exchange clusters at GM dealerships. This requires the odometer be removed from the defective cluster, then reinstalled in the exchanged cluster
• The odometer motor is changeable by the owner.
• Directional and high beam indicator lens and # 74 bulbs.
• Odometer motor lens.
• Photo sensor lens.
• Bulb heat sinks.

Cluster Power And Grounds
    The LCD (liquid crystal display) of the cluster is controlled by the cluster's microprocessor via the CPU (central processing unit) and A/D (analog / digital) converters.