Spin Alarm System Dead, Communication Fault Fix Needed

Had a similar alarm system fault detection issue with a 2014 Chevrolet Cruze diesel. Sounds exactly like what happened to my old Sonic, both showed those frustrating siren communication errors. The signal problem turned out to be a corroded wiring connection near the alarm control module. The workshop did a full diagnostic scan that revealed multiple connection points had deteriorated. Key was finding the specific wiring issue rather than just trying to alarm disarm through the key fob. Total repair cost was 95 Euro for reconnecting and sealing the damaged wiring harness properly. Fixed it completely, no more unusual alarms or system failures. What's the mileage on your Spin? Also, did this start happening suddenly or was it gradual? These details would help pinpoint if you're dealing with the same wiring fault I experienced. The fix is pretty straightforward if it's the same issue. Let me know those details, might save you some diagnostic time at the shop.

Thanks for the detailed response about the wiring connection issue. My Spin has 8006 KM on the clock and just had its latest service done. The fault detection system started acting up quite suddenly, was working fine one day, then complete signal problem the next. Good to hear your fix was straightforward. The alarm reset attempts through the key fob haven't worked at all, which matches what you mentioned about the wiring being the root cause rather than just a controller issue. Going to have the shop check those connection points you highlighted. Did your repair require any special parts beyond the wiring harness? Want to make sure I have everything ready when I take it in.

Glad I could help with the initial info. Since your mileage is pretty low at 8006 KM, this definitely sounds like the same alarm controller issue I dealt with. The sudden failure matches my experience exactly, these wiring problems tend to show up without warning. In my case, the shop didn't need any special parts beyond basic wiring supplies. The main task was tracking down the faulty connections and properly sealing them. Though with the signal problem showing up so early in your Spin's life, might be worth having them check the alarm control module itself just to be thorough. Quick tip from my repair, make sure they test all the connection points even after fixing the obvious ones. Had a repeat alarm reset issue a week later because they missed a secondary corroded spot. Better to get it all sorted in one go. The wiring issue repair should be similar cost-wise to what I paid, unless they find the module itself needs replacement. The Spin's alarm system layout is practically identical to my Cruze's setup, so the diagnostic process should be straightforward for them.

Thanks for that detailed follow-up about checking all connection points. Makes total sense about being thorough with the vehicle security system inspection since these problems tend to be linked. Will definitely have them do a complete check of the alarm control module and all wiring connections. Your experience with the repeat security breach is especially helpful, I'll make sure to mention this to the technician so they can check for any secondary corrosion spots during the alarm reset process. Would rather spend the extra time now than deal with another failure. Good to know the repair costs should be reasonable if it's just wiring. I'll update the thread once I get it sorted in case anyone else runs into similar alarm system issues with their Spin. Booking it in for next week and will make sure they do that full diagnostic scan you mentioned.