Proper location for this ground?

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Mar 11, 2020 | 02:35 PM

Cory51191

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From: Leominster Massachusetts

Proper location for this ground?

While I’m in here... this was bolted to the back of the passenger side head. Where is the proper grounding location?!

thanks!

Mar 11, 2020 | 02:47 PM

v6turbo87

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From: Sandown NH

What makes you think it isn't supposed to be bolted to the head?

Last edited by v6turbo87; Mar 11, 2020 at 02:47 PM.

Mar 11, 2020 | 03:22 PM

robmiz

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From: Montana

I believe that the ground wire for TAC module. It bolted to same ground as the negative side of battery on the engine block, just above the starter.

Mar 11, 2020 | 03:37 PM

Cory51191

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From: Leominster Massachusetts

Quote:

Originally Posted by v6turbo87

What makes you think it isn't supposed to be bolted to the head?

As far as I’m aware there is nothing grounded to the back of the passenger side head.

Mar 11, 2020 | 04:58 PM

C5 Diag

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From: Cape Coral, Florida

Quote:

Originally Posted by Cory51191

As far as I’m aware there is nothing grounded to the back of the passenger side head.

CORRECT !!...no ground located on the passenger side head...the ground for both bank coil packs located on drivers side head (G107). Is it a black or black/white wire ??

Last edited by C5 Diag; Mar 11, 2020 at 04:59 PM.

Mar 11, 2020 | 05:02 PM

helga203

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Quote:

Originally Posted by C5 Diag

CORRECT !!...no ground located on the passenger side head...the ground for both bank coil packs located on drivers side head (G107). Is it a black or black/white wire ??

Zoom in looks blk and wh

Mar 11, 2020 | 05:57 PM

C6Z_LS7

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Quote:

Originally Posted by robmiz

I believe that the ground wire for TAC module. It bolted to same ground as the negative side of battery on the engine block, just above the starter.

correct. Just went through it a few weeks go. I took a picture so I wouldn’t lose where everything went. luckily I kept it....

Mar 11, 2020 | 06:32 PM

Cory51191

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From: Leominster Massachusetts

Quote:

Originally Posted by helga203

Zoom in looks blk and wh

It is black and white and looks identical to the coil ground, but that ground is in fact bolted to the back of the driver side head.

Still unsure what this one goes to.

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Mar 11, 2020 | 06:40 PM

StingrayRebel

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that could also be a ground for one of the fan relays, there are a few in the same location that look similar so as long as you get it grounded the location isn't really important... you can see the stud it was originally grounded to in the upper left of your pic on top of the frame rail

Mar 11, 2020 | 06:46 PM

#10

Cory51191

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From: Leominster Massachusetts

Quote:

Originally Posted by C5R_LSX

correct. Just went through it a few weeks go. I took a picture so I wouldn’t lose where everything went. luckily I kept it....

I just took another look at it and it appears to have the same wires attached to my starter..

This mystery wire comes out of the same portion of the harness as the smaller starter wires come from.. here’s another pic!

Mar 11, 2020 | 07:08 PM

#11

C5 Diag

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From: Cape Coral, Florida

This is G104 I believe and it’s below the battery negative terminal..there are 3 wires that are attached to the stud. I forget what this ground applies to !!

Mar 11, 2020 | 07:14 PM

#12

Cory51191

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From: Leominster Massachusetts

Quote:

Originally Posted by C5 Diag

This is G104 I believe and it’s below the battery negative terminal..there are 3 wires that are attached to the stud. I forget what this ground applies to !!

Thats where I thought it should go but the eye is much larger than the stud. Either way, that’s where it’s going. Also why does yours have a plate on it? Mine is just a stud with a nut.

Last edited by Cory51191; Mar 11, 2020 at 07:15 PM.

Mar 11, 2020 | 07:20 PM

#13

C5 Diag

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From: Cape Coral, Florida

Quote:

Originally Posted by Cory51191

Thats where I thought it should go but the eye is much larger than the stud. Either way, that’s where it’s going. Also why does yours have a plate on it? Mine is just a stud with a nut.

It is just a little flap that covers the stud...yours may just be missing !!...there are also a few ground wires where the negative cable of the battery attaches to at the engine block...it may go there...that eye is larger there !!

Last edited by C5 Diag; Mar 11, 2020 at 07:21 PM.