RE: Intermittent Dash Problem
For a '97, you do not need to do the key dance. The car comes with an OBDII PCM. Just go to any AutoZone or Checker/Schucks/Kragen Auto, they can scan the codes for you for free.
Back to your original intermittent gauge cluster problem: Battery is not your issue. The issue is with you BUS wiring harnesses that connect the gauge cluster to the PCM and BCM. You need to take gauge cluster out, unplug both harnesses and plug them back in. Make sure that the plugs are plugged in tight. If the problem continues, it is time for a new cluster and/or new wiring harness. In my case, it was the gauge cluster.
Your check engine light is a different problem. You need to have the code scanned and get back with the code(s).
Zack
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