02-11-2019, 03:50 PM | #29 |
Drives: 2018 ZL1 1LE Join Date: Apr 2018
Location: SoCal
Posts: 134
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Finally got this resolved as of today. The new rear end didnt stop the issue of my left turn fuel pump voltage drop issue, but it did obviously fixed the whining issue. Fun fact, the preload was way out of spec because the main pinion nut loosened itself a good half turn! Brand new rear end is being broken in as we speak. About 500miles on it already but will take it easy to 1000 then swap fluid.
As for the issue regarding my engine codes and loss of power on hard left turns... my builder was working on a ZL1 1LE and installed 2" ARH headers (Mine are 1 7/8) and he noticed it was actually making contact with the main harness under the coolant tank... so he asked me to bring the car back and sure enough, we lifted up the tank, pulled the harness up and found the melted wires. GM decided to run this harness NEXT to the frame rail rather than on top of it even though there plenty of room to run it away from the exhaust. The ARH headers and they way they are designed put the front pipe over the top of the rest and right on this harness. He said he hasnt seen this issue with Kooks or SW. Either way, we pulled back the insulation, fixed the wires effected and rewrapped and reloaced the harness and my issues are gone! Whew... Moral of the story... if you have a ZL1 with ARH headers, you might want to check this! |
02-11-2019, 05:09 PM | #30 |
Drives: 17' 1SS 1LE GBA-Black Join Date: Mar 2017
Location: TLV
Posts: 810
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I have been following your issues and glad that you finally managed to find the culprit.
Can you elaborate on the whining issue? I seem to notice a very subtle whine from the rear end as well. Seems to stop when I press the clutch and comes back when I engage the clutch again. It is especially noticeable when turning very slow speed. It does not happen all the time, only once in a while and this is the disturbing fact - I cant find the reason..... |
02-11-2019, 05:46 PM | #31 |
Drives: 2018 1SS Join Date: Dec 2018
Location: MA
Posts: 300
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Do you have headers... Did you see this thread?
https://www.camaro6.com/forums/showthread.php?t=547953
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2018 Red Hot 1SS, GM lowering kit & 1LE Sway bar kit, ZL1 1LE solid rear cradle bushings, BMR sway bar end links, GM CAI w/tune, Pray ported IM, Mamo ported TB, VS Forged VS07 rims 20x11 & 20x10 w/ Michelin PS4S
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02-11-2019, 06:03 PM | #32 |
Drives: 2018 ZL1 1LE Join Date: Apr 2018
Location: SoCal
Posts: 134
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I’m the author of both threads...
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02-11-2019, 06:05 PM | #33 | |
Drives: 2018 ZL1 1LE Join Date: Apr 2018
Location: SoCal
Posts: 134
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Quote:
The good news is that GM warranty replaced my differential. If yours has an issue hopefully they would take a look at yours as well. |
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02-11-2019, 06:32 PM | #34 |
Drives: 2018 1SS Join Date: Dec 2018
Location: MA
Posts: 300
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HAHAHAHAHAHA - my wife often say I'm not very observant. Here I was all proud I recognized a common thread
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2018 Red Hot 1SS, GM lowering kit & 1LE Sway bar kit, ZL1 1LE solid rear cradle bushings, BMR sway bar end links, GM CAI w/tune, Pray ported IM, Mamo ported TB, VS Forged VS07 rims 20x11 & 20x10 w/ Michelin PS4S
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02-11-2019, 10:55 PM | #35 |
Drives: 2018 ZL1 1LE Join Date: Apr 2018
Location: SoCal
Posts: 134
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My builder just checked a 2017 CTSV he is working on and it actually has a heat shield/wrap on that same harness. GM clearly missed the memo on that one. I feel it should have been wrapped on all the cars. Anyone with stock manifolds mind taking a pic to see what the clearance is?
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02-23-2019, 03:57 PM | #36 |
Drives: ZL1 1LE Join Date: May 2018
Location: Florida
Posts: 22
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02-23-2019, 04:12 PM | #37 |
Drives: 2018 ZL1 1LE Join Date: Apr 2018
Location: SoCal
Posts: 134
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