DTC P0604

Bobm

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May 22, 2017
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Buffalo Ny
I have a 07 cobalt ls It is throwing the p0604 code for pcm ram error i have checked the fuses they are all good. Currently not experiencing any drivability issues. I was wondering if a pcm from a salvage yard would work or if it would have to be programmed. Also it it is giving the crank position variation not learned code of p0315 was wondering if this could some how cause the first code. The vehicle was in a accident that may also had something to do with it
 

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