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I have a 1995 Cadillac ElDorado. When I put it in reverse or drive the engine jumps. Replaced all motor mounts thinking it would solve problem. It didn’t.

I was looking at Instrument panel cluster. Diagnostic showed these messages: Loss of power tran control module data; keep alive memory error; loss of air conditioner program data.

I lose panel information. When I lose the information the transmission does not change gears. It stays in drive only. When I have panel information it is okay. This is intermittent. Could the problem be related to the computer? Could the PCM Power Train Control Module be damaged?
 
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