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Old 03-20-2026, 02:08 AM   #1
SammYyYyY
 
Drives: 2018 ZL1 1LE
Join Date: May 2022
Location: Salt Lake City
Posts: 153
Intermittent Electrical Failure

Hey all! I'm having a weird issue with my ZLE; as I'm driving down the road I am occasionally losing all power for a second or two before everything comes back on. When it happens, the gauge cluster shuts off, the lights shut off, the exhaust valves open regardless of whatever mode the car is in, and the EPS stops working (this is the most troubling part; quite dangerous).

My first thought was that a ground didn't get tightened properly during reinstallation of the engine after a complete overhaul. I checked the ground connection on the back of the passenger cylinder head and everything seems to be good there.

However, the back of the driver's side cylinder head usually has two ground connections, and I noticed one of them was relocated to the back of the bell housing (see attached photos, relocation shown in purple). I'd assume this is NOT my issue as there should be continuity between the bell housing and the engine block, right?

I'd like to mention that the battery is brand new (OEM), and the passenger side wiring harness is safely tucked away from the headers and appears to be in perfect condition.

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Last edited by SammYyYyY; 03-20-2026 at 11:10 AM.
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