shrieking alt. sound, lost ignA 40 amp fuse, ended up being starter solenoid engaged itself. put in new. still shrieking. pulled alt. no smells / sounds / feel of bad. lost gear indicator orange box at same time, new starter unk. Body control module?

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put in NEW starter. let idle, started shrieking again. didnt blow any fuses this time. (old starter stunk, wiped out.) pulled alt. no "bad" smell / feel / sound. no restart after driving 2 miles. sounds like starter is getting power, with dog box off, but no turnover. other accessories all spin / smell fine w belt off. lost here. what causes a starter to cook itself, while driving, and simultaneously wipe out the gear shift indicator box? it only lights in park and neutral. the whole time, volt gauge and everything else showed normal. i dont think its just bolt ons. HELP! BCM? something else? cant afford downtime. this van is a work van. Thanks!!