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Old 02-09-2018, 01:31 PM
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i think its tied into that ground somewhere but i'll have to look. there are about 3 maybe 4 grounds on the block and then 2 or 3 grounds on the chassis.

i believe the ecm is tied to both a chassis and block ground. i'll see if the Wiring Diagrams in the haynes manual show which grounds are which
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Old 02-09-2018, 02:18 PM
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Normally no. But if it's corroded or intermittent it can wreak havoc cause that's how the ecm will sink current. So if it can't sink the current it goes through other ecm related components

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Old 02-12-2018, 10:47 PM
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there are 2 pcm grounds. they are both blk/wht wire. its not the only blck and white wire either so trace them to a ground point. both ground should go to the same ground or tie into each other.
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Old 02-13-2018, 11:21 AM
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Is it bad if I have the negative battery ground attached to the same spot as the PCM ground? BTW, the flickering light issue hasn't come back at all.
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Old 02-13-2018, 01:28 PM
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Quote:
Originally Posted by Neebs View Post
Is it bad if I have the negative battery ground attached to the same spot as the PCM ground? BTW, the flickering light issue hasn't come back at all.
I wouldnt think so. May have just needed to be moved. Or something connected better.
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