2k Cobra

extrapilot

This would be the area I would recommend to look at again. I know you said that you did, but look to see if there is a ground wire coming off the harness, front to back of the frame area. Also any connectors that could be not fully connected/seated or signs of corrosion where mister inspector was tugging at.
I would imagine that the car had been stored most of it's life in a garage, and depending on the conditions like high humidity could play havoc on electrical connectors.

Jake5670

I tried to find that one while I was under the car and could not see it. I will check again tonight trying to reach it from topside. Thank you

extrapilot

One could try to move and wiggle wires around in the suspected area, like around the fuse box, starter harness, where the inspector was fiddling and while doing this have someone inside the car keep trying to start the car. Got to be something loose or a poor connection some where.

Jake5670

I agree. I bought the 2011 service manual from helms and it is being delivered today. I will check the grounds...should be able to find the gremlin soon.

erick_e

One thing I just remembered.

Some have also mentioned that the cabling going to the BCM, under the passenger floor board, may also have a loose connection.

Could also be the relay for the ECM (relay 43 or 44) in the under hood fuse panel. You could try to swap that relay with the one from the rear defroster to see if that works.

Jake5670

I appreciate it. I did do the ECM relay swap already but with the wiper relay. I looked at the fuse box under the floor board but did not mess with the ones in the middle where the bolt is holding a cover over the two in the middle. It looked secure as the bolt was not loose. I can taje another look at it for good measure. Thank you

01Z06 Black

The starter solenoid needs 12 volts to energize and enable the starter motor. The wiring diagram for the start circuit and a volt meter would be very helpful in locating the problem. Maybe someone on the forum would have the diagram or you can go to Alldata.com and get one.

Also, if you have a DVM, check for continuity from the negative side of the battery to the engine block, you should read less than 1 ohm resistance. This should verify that the engine has a good path to ground. If the ground is good then check for 12 volts at the start relay and work your way to the starter solenoid, until you find where you lost the 12 volts.

Jake5670

I appreciate it. I checked the grounds last night and today including G104 and this did not resolve my problem. I also took sanding paper and cleaned the battery cable terminal connectors and the battery terminals. I will need to get a better look at the starter solenoid and see how it's connections are.

Thank you everyone!

Jake5670

I am going to look at G303 ground Monday. I have looked at all the easy to find grounds so far under the hood. According to my Helms 2011 Corvette shop manual page 9-476 the negative terminal goes to ground G303. From what I have seen so far it is on the passenger side close to the B pillar. I will follow their starting and charging schematic and check off each segment as I go. Thank you!

RWE 427

If you find G303 can you let us know exactly where its located.

Good luck getting your problem fixed

jamestronix

Here are 2 useful threads on ground locatons

http://www.ls2.com/forums/showthread...tte-Grounds?s=

https://www.corvetteforum.com/forums...locations.html

Jake5670

Hello folks, I tried all the different ways I could to troubleshoot the issue I was having with my car and I ended up taking it down to my Chevy dealer today. I scheduled a visit with them and had the car towed down there. It ended up that the fuse box under the hood itself was having a problem grounding. There are four bolts that hold the fuse box in place that are lined up right in the middle from the windshield side of the fuse box on toward the front bumper. The one nearest the windshield was loose and caused the grounding issue. I am glad they found the problem because I never thought to check those bolts. I checked all of the grounds that were identified here (G104) and in my service manual that I could get to.

Thank you everyone for your help... especially my Chevy dealer!

RWE 427

03sixspeed

Has the headlamp recall been done on your car yet. The dealer will have modified the fuse box under the hood if the recall has been done. Could be related. The recall has been done recently on my 2011 ZR1 & today the car would not start or take a jump start. I have the battery out of the car charging & will install & try on Monday. The battery on mine is 5 years old so may be ready for a new one. Good luck with your car.