Good luck. I was told there are no schematics only engineering drawings and they are classified to prevent another company from stealing their intellectional property. Also they do make changing 'on the fly' on the assembly line as needed so the drawing or schematic is not accurate. If you have a specific question you can call Heartland Customer Service and give them your vin. They will contact the engineering department and answer your specific question. I have called them before and got my issue resolved.
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