Other sources of information
The Corvette Shop Manual
This is available new from www.helminc.com for about $75, or used from www.factoryautomanuals.com. Trust me - they'll save you thousands of dollars in repair charges. They're the same manual that the dealerships use. If you look in your owners manual, there's a coupon for one of these for $25 from Helm, Inc. I'm guessing that isn't a valid price any longer.
1984 - 1989 Corvette Digital Cluster, A complete Step-by-Step operational and troubleshooting guide by Gordon Killibrew
These are available from MAD and are a great source of information for troubleshooting problems related to the systems that control or are controlled by the digital cluster, but doesn't really talk about repairing most of the common problems that I'm finding. He stops after telling you to check the ground and clean the contacts inside the cluster with contact cleaner. Still worth the $30 if you don't have the shop manual.
Over 10,000 Corvette owners can't be wrong, can they? If you've got a problem that isn't covered here? Ask there!
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