[glamcem]

Originally Posted by slick3

My 2017 1LE had the same problem about 3 weeks into ownership. Completely frayed that harness and the car went into limp mode leaving me stranded.

Tim @ EFI-Tuning was kind enough to help me cross reference the code I was getting to a location. Sure enough those wires down there were completely cut. I jerry rigged it on the side of the road, got it home, took it apart and fixed it properly and ended up zip-tieing it out of the way.

Wish I would have saw your post earlier I could have told you exactly where to look!

Oh man I wish you shared your experience here, it would've saved us a lot of trouble for sure Mine started doing this like 8-9 days ago but there were a couple other threads (which I shared in the OP) and it seems like your missed those. Oh well, I hope everyone sees this and check theirs accordingly.

Originally Posted by craigss50

2017 2SS A8 here and no wires like that near the belt.

good for you

Originally Posted by SuperSound

More pics from my borescope camera. It's crappy quality b/c it's only like 1-2MP camera. Can't get enough room to get my phone in there for pics.

#1 shows the 2 wires running from the A/C compressor which are at least 3" from the belt
#2 shows looking from the belt to the harness plug all 3 wires connect to
#3 top angle of the belt looking at the 3rd wire which I believe is the same one OP had damage too (can't tell where it goes from this harness). About 2 inches of space and below the belt.
#4 tried to get some better light and a farther shot of the 2 wires/belt
#5 That's the plug all 3 wires go into. It does not look like a crank position sensor and seems to be attached to the side of the EPS.
Sent from my SAMSUNG-SM-G920A using Tapatalk

I am not sure where it actually goes into TBH

Originally Posted by DenverTaco07

Is this it? Sorry, pic upside down.

I have about 1.5 to 2 inches clearance.

Build date is december 2016.

It looks like it

[glamcem]

Originally Posted by vtirocz

glamcem,
Thanks for pointing this out. I checked mine and it appeared to be in a similar spot to yours. I would estimate maybe 1/2 - 1" of clearance though. I could not see any signs of wear, but I also only have ~250 miles on my car and have not really had it above 4k RPM.

I zip tied the section that loops around to the main harness (toward the closed end of the loop). There's much more clearance now, but I will keep an eye on it to make sure there continues to be adequate clearance with this initial solution.

Thanks again! You saved some of us a potential trip to the dealer.

This is really a crappy routing design for the harness for it to potentially be that close to the belt. GM should fix this ASAP before they end up with a ton of warranty claims and unhappy customers!!

Glad to be a help. I agree it is definitely worth checking. I've never had the CEL or other issues people mentioned but I think I was pretty close to having them all

[SS 1LE]

Good find with this fellas...will make fixing this issue for anyone dealing with it a piece of cake.

So those of you who had wires exposed...you just used electrical tape and covered them back up? You weren't worried if any of the actual wire was worn off?

I haven't had any issues in my 800 miles, but I will check mine this weekend. I have a late November '16 build date.

[Redlinez]

Thanks for the info, will check mine asap!

[ctrlz]

Originally Posted by DenverTaco07

Is this it? Sorry, pic upside down.

I have about 1.5 to 2 inches clearance.

Build date is december 2016.

yes, that is it. it looks to me like it plugs into a connector that makes a right angle. There is a metal bracket which holds the assembly to the block with a bolt. I think the plastic part has a portion which protrudes inside the block. From what I can see from GM parts diagrams, the crankshaft sensor does NOT make the 90 degree bend, while the camshaft sensor does.

Originally Posted by craigss50

2017 2SS A8 here and no wires like that near the belt.

So, the new puzzler... why would it not be present on an automatic?

[slick3]

Originally Posted by DenverTaco07

Is this it? Sorry, pic upside down.

I have about 1.5 to 2 inches clearance.

Build date is december 2016.

Yep those are it. Seems like the only people with issues thus far were the 1LE cars. Mine being one of them

[Marty McFlew]

Recall??? Service advisory??? Tech. Service Bulletin???

[slick3]

The wire on mine that was cut had to do with the dynamic oil pressure sensor. Basically it will modulate open more and less to bump up or down oil pressure. When it got cut, it basically got stuck at 60 pounds of oil pressure, the guage would not move at all...

As far as the code... I actually made a thread about it here...

http://www.camaro6.com/forums/showthread.php?t=477789

[vtirocz]

Originally Posted by slick3

Yep those are it. Seems like the only people with issues thus far were the 1LE cars. Mine being one of them

Mine is a 1SS manual, but does not have the 1LE package and mine was uncomfortably close to the belt (1/2" away). I zip tied it further out of the way to ensure this would not be an issue.

[ctrlz]

Some pictures of the LT-1. First in the corvette:
http://gmauthority.com/blog/wp-conte...-Engine-02.jpg
and the Camaro:
http://gmpowertrain.com/2016_images/...L-(S)-HiR2.jpg
Both show the same sensor mounted on the left side of the top of the timing chain cover. You can see the blue wires coming off in the corvette. That raised circle next to the sensor corresponds to the front end of the camshaft. I'm still betting that is the camshaft position sensor.

The harness we are talking about here seems to be connected lower on the block and is not visible in either picture.
I am changing my guess to crankshaft position sensor.

[slick3]

Originally Posted by ctrlz

Some pictures of the LT-1. First in the corvette:
http://gmauthority.com/blog/wp-conte...-Engine-02.jpg
and the Camaro:
http://gmpowertrain.com/2016_images/...L-(S)-HiR2.jpg
Both show the same sensor mounted on the left side of the top of the timing chain cover. You can see the blue wires coming off in the corvette. That raised circle next to the sensor corresponds to the front end of the camshaft. I'm still betting this is the camshaft position sensor.

Those were in fact the wires. I cant remember which one of mine was frayed, but as I posted above, the codes I got for it were in my thread I started a few months ago. It definitely had to do with the oil pressure sensor.

[SuperSound]

Originally Posted by ctrlz

yes, that is it. it looks to me like it plugs into a connector that makes a right angle. There is a metal bracket which holds the assembly to the block with a bolt. I think the plastic part has a portion which protrudes inside the block. From what I can see from GM parts diagrams, the crankshaft sensor does NOT make the 90 degree bend, while the camshaft sensor does.


So, the new puzzler... why would it not be present on an automatic?

It's on autos too, think he was just stating like mine the wires are not close enough to belt to cause alarm, unlike the those with the real issue.

Originally Posted by ctrlz

Some pictures of the LT-1. First in the corvette:
http://gmauthority.com/blog/wp-conte...-Engine-02.jpg
and the Camaro:
http://gmpowertrain.com/2016_images/...L-(S)-HiR2.jpg
Both show the same sensor mounted on the left side of the top of the timing chain cover. You can see the blue wires coming off in the corvette. That raised circle next to the sensor corresponds to the front end of the camshaft. I'm still betting this is the camshaft position sensor.

Originally Posted by slick3

Those were in fact the wires. I cant remember which one of mine was frayed, but as I posted above, the codes I got for it were in my thread I started a few months ago. It definitely had to do with the oil pressure sensor.

Yep so it has to be oil pressure sensor then but may have wires going to other sensors converging in that harness. Now why would oil pressure sensor trigger surging? Limp mode I could understand as the computer is attempting to protect the engine. May be just because the signal was fluctuating bad enough to cause the computer to put it in Limp mode?

[ctrlz]

Ahh, slick3, you quoted me before I corrected myself.
The sensor is lower than the one we can see in the pics.
Changed my guess to crankshaft position sensor.

Originally Posted by SuperSound

Yep so it has to be oil pressure sensor...

Ya, think? Aren't those usually higher up where pressure drop could cause problems?

[slick3]

Maybe it was loosing oil pressure signal and the surge was pulling timing or spark in an effort to not kill itself? When mine went. The screen came on reduced power mode. And im telling myself "car feels fine and I have oil and fuel pressure, temp are good, its not knocking WTF" I took off from a stop and then it started to buck and surge then it really went into RP Mode. Like 3 miles an hour tops.

My guess is the surging was a bad signal and the computer was implementing failsafes in and out to prevent damage. Likely spark or tons of fuel.