This was shared per my tuner, hACKman Customs. Figured I would share. Hope this helps.
I just experienced this issue and had the repairs done at the dealer. I had no idea this would happen and asked the dealer to notify GM of this issue. This chaffing issue was new to them as well
Not sure if there is a suggested fix or wire reroute. My first thought would be to put some rubber hose around the wires to keep it from happening again. Or, possibly using zip ties to secure the wires more safely away from the points they are rubbing at, just depends on how much slack in the wires there are (if any) and if they can be zip tied up and away.Good evening Gents! I just experienced this. If you would be so kind as to detail the reroute and provide some photographs to support said correction. Your time is greatly appreciated. Thank you
I found the chaffed area of the harness, and used a modified plastic water bottle as a protection sleeve. Wrapped the harness in the sleeve, and applied three zip ties to secure in place. This is just a band aid for now. A reroute and more robust repair are due once I can get the truck to the shop and up on a lift.Not sure if there is a suggested fix or wire reroute. My first thought would be to put some rubber hose around the wires to keep it from happening again. Or, possibly using zip ties to secure the wires more safely away from the points they are rubbing at, just depends on how much slack in the wires there are (if any) and if they can be zip tied up and away.
I get the feeling that the scope and seriousness of this problem is being downplayed and the link below shows that GM and the dealers have been well aware of the wire chaffing issue for some time - there should be no excuses. Here is the link to the latest bulletin I could find that GM was required to submit to the NHTSA which covers model years 2016-2018 (so far): https://static.nhtsa.gov/odi/tsbs/2018/MC-10147385-9999.pdfMy 2016 Colorado Diesel is having the same symptoms at 132k. Have spent $700 at the dealer already and they have more parts ordered. Just looked at my harness and it is rubbing but i cant get a good look under the harness to see if it is worn through. Jerryjm1 pic looks like they relocated the harness so its not against the condenser. Going to bring these pics to the dealer along with the symptoms and have them check the harness. Thanks all for posting! This is a big help.
In addition to talking with GM please do the following (both may seem futile but it builds a historical trail elsewhere);UPDATE! ....
I am going to reach out to GM directly. This is a major defect and will render our vehicles "worthless for resale" in a short amount of time. I seem to remember some GM reps chiming in on this forum but they have seem to have gone silent on this issue. I recommend all who own these vehicles to check all the service bulletin chaffing spots and correct them immediate. Once the harness is compromised has not fix. The only correct way to fix this is to replace the harness. As a life long GM owner this is truly disappointing.
I'm carrying a roll of self fusing silicone tape at all times for emergencies and bought extra to just wrap some of the noted points when the weather warms up. I found it funny that when I had some issues where the dealer said it was my ECM and not chaffing that I now also have a big knot of cloth tape wrapped around the harness where rubs against the AC tube under the left wheel well There is a plastic hanger loop higher up on that tube the harness goes through that I will secure in place with the fore mentioned silicone tape point so the harness can't slip down and rub.Looked at mine, not rubbed through, but I don't like the routing situation at all. I think I will pull the fender liner and do some redneck engineering involving zip ties and old heavy rubber motorcycle inner tubes