Ground points?

[newman1313]

Hey guys! I've finally decided to chase my alternator whine out of my system. I soldered in the wiring harness and ran to a processor in the back. Then to amps and a single 10. I can turn down the processor and the whine mellows but it doesn't get loud enough. I'm starting with ground points. Where are they besides the passenger front kick panel and by the battery? TIA

[BuildItYourSelf]

I wish I had my book I'd take the pictures.
I'm pretty sure cp posted the diagram. See if you can find it.

I will say check the ground from the right (passenger) side cylinder head to the body.
It had given me a problem before.

[BuildItYourSelf]

http://www.forum.grrrr8.net/showthread.php?t=33446

[Crazy Paul]

G102
In the engine compartment on the right frame rail

G103
In the engine compartment on the EBCM bracket

G104
In the engine compartment, on the left inner fender, at the jump start negative post

G106 (LY7)
On the right side of the engine block near the front

G107 (LY7)
On the right side of the engine block near the middle

G108 (LY7)
On the right side of the engine block near the rear

G109 (LY7)
On the left side of the engine block near the middle

G110 (L76)
On the right side of the engine block near the front face

G111 (L76)
On the right side of the engine block near the front face

G112 (L76)
On the left side of the engine block near the rear face

G201
In the passenger compartment, above the right kick panel, on the I/P end plate

G202
In the passenger compartment, left side of the I/P, left of the steering column, behind the knee bolster

G301
In the steering wheel

G303
In the passenger compartment along the transmission tunnel

G304
In the passenger compartment, at the base of the right A pillar

G305
In the passenger compartment, at the base of the left A pillar

G308
In the passenger compartment on the SDM bracket

G309
In the rear of the passenger compartment in the headliner

G310
Top of the steering column, under the inflator module, on the steering wheel

G401
In the rear compartment, left side, rear of the battery, on the left frame rail

G407
In the passenger compartment on the rear shelf

G409
In the rear compartment on the rear latch plate

[newman1313]

Thanks guys. Looks like I've got some work to do.

[newman1313]

I'm assuming the (L76) and (LY7) are engine references? If I have LS3 would it be the same as L76? Thanks again for the help

[swargolet]

Just wanted to give you some tips newman. I've been trying to chase down whine in my stereo for about a year now. The good news is that the radio head unit does NOT ground through the chassis anywhere. I have already routed the ground wires from the 12V outlets and the radio harness to the same grounds as my amps but still have the whine. I have tried unplugging my Onstar unit (I dont have XM) just in case the radio was somehow getting a ground through that but it didn't make a difference either. I did notice that the radio antenna which plugs in on the drivers side of the radio is grounding somewhere, so the radio is able to ground through the antenna but I don't know how this could be fixed. Besides that, I don't know where else the radio could be grounding and causing ground loops.

I've also heard that doing the 'Big 3' upgrade helps but I haven't tried it.