PCM Ground locations? 5.7L 2000 Chevy

[eXo0us]

Back grounds relocated. Some PO had the two wiring harness grounds connected to a bolt at the transmission.

Even worse they had been connected to a painted bracket which holds up the shifter bracket. Not only wrong spot - but a bad electric conductive one.

But it back on the manual indicated spot on the driver side cylinder head. Next - Have to put on a new ring terminal for the front ground which connects to the front of the engine.

 

[Caman96]

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Falconer Electronics | Wire Harness Manufacturer | Ground Straps

Falconer Electronics | Ground Straps & Wire Harness Manufacturer | Tired or waiting for a response for your RFQ? Take advantage of Instant Quote Program

falconerelectronics.com

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I replaced the 3 back straps with 3/4” and used the Big 3 Kit up front.

 

[eXo0us]

Check these guys out. You can customize lengths, gauges and eyelet sizes. Prices are very reasonable and fast shipping too.

Falconer Electronics | Wire Harness Manufacturer | Ground Straps

Falconer Electronics | Ground Straps & Wire Harness Manufacturer | Tired or waiting for a response for your RFQ? Take advantage of Instant Quote Program

falconerelectronics.com

You must be registered for see images attach

I replaced the 3 back straps with 3/4” and used the Big 3 Kit up front.

Thanks,
I already got that ground strap replaced. I have now two ground straps from the engine to the frame - one from each cylinder-head to both frame rails.

My battery ground is on the Passenger side frame rail and it had a signal strap on the driver side frame rail. So I thought - might be better to have those closer together.
Apparently depending on the year - the location of the engine ground strap is different, some have them on the right some on the left. So now I got both.

I don't have any power issues - voltage is stable and alternator is fine. I'm tracing signaling issues. So I'm going to wait with the Big 3 Power wires until I got verified that the grounds are not the issue.

 

[eXo0us]

Front PCM ground replaced.

Not only wrong location (A/C bracket) but the ground connector fell apart when I opened the bolt. Got a new ring terminal and have it mounted to the thermostat housing as intended.