What's up guys? So about 2 months ago I started having HVAC issues with my '11 LT Cruze. The A/C would be blowing like normal and suddenly shut off and come back on a few moments later. It did this 5 or 6 times over the course of a few days before it shut off and wouldn't come back on. I took apart the glove box and dash pieces to get to the blower motor itself to diagnose the issue. Well, once I got down to the blower I turned the fan switch on and to my surprise, it was working through every setting. I left the dash apart for about 4 days just in case it decided to quit on me again and it didn't. I put everything back together and it's worked fine for about 2 months until now. So again, I take the dash and glove box apart, get to the blower and turn the fan switch on and it still won't work. I tested out a few things to find out if I pushed up on the plug itself it would turn on and work like it's supposed to but if I let go of the plug it shut right off. After fighting with the plug for about 2 hours I finally got it out and once I pulled it out I figured out why it wasn't working. The plug connector and the red and black wires about an inch down from the connector were all black and melted together. The end of the connector was completely melted to the plug on the blower motor which was why I couldn't get it out. Long story long, something was shorting out the wiring and melting/burning the connector and wires. The Cruze has a transistor that is supposed to trip with these types of issues, and if the transistor doesn't trip the fuse is supposed to trip. Neither did in my car. From my research, I've seen multiple reports of the same type of issue with the blower turning off randomly or just not working at all and the dealerships seem to just be replacing the blower motors but the issue persists. This is just an FYI to those of you that have or have had this type of issue. Check your wiring, the last thing you want is the wiring issues to start a fire. Oh, and I found the replacement wire harness online for about $28. The pics I've attached are for reference along with the part sticker on my original wire harness.
WIRE - GM (13263281)
WIRE - GM (13263281)