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I’m wondering if anyone could tell me where the pcm ground locations would be on a 1997 Pontiac Bonneville.
RE:There are multiple grounding locations on your Bonneville. A shop manual or schematic would help greatly in finding them all, but here are a few. Of course the main ground goes through the negative battery terminal and is grounded to the frame and block. You will have a couple other grounds on the engine block, usually right below the cylinder heads. There will be a few on the core support and firewall. There are quite a few under the dash, attached to metal brackets and framing pieces. If you do get a schematic, you will be looking for grounds named G100, G101, etc.
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