Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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I would go with 650 or higher if you can on the batteries but if you cannot then the 600 cca is o.k to use.
This may be an issue with the fuel injection pump itself.I have seen this pump fail in the past before needing replaced for this type of fault here.If this has not been tested to see if this is the cause here this needs done.
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