charlottemiller48
Suburban Terminal 15 Ignition Interrupted
Summary of the thread
A 2020 Chevrolet Suburban with a diesel engine is experiencing a "Terminal 15 ignition positive interrupted" error, preventing the engine from starting. This issue could be due to a bad battery terminal, starter solenoid, or defective wiring harness. The suggested solution is to inspect the wiring for breaks or defective connections and seek professional assistance. The problem was resolved by replacing a defective cable at a workshop.
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4 comment(s)
charlottemiller48 (community.author)
Thank you for your insights. It is completely dead, no cranking. I have not checked the wiring harness thoroughly. Where should I be looking specifically?
hannah_phoenix15
Okay, complete silence points to a potential circuit break. Think of it like a garden hose with a kink – no water gets through. Given it's Terminal 15, I'd advise against probing too deep yourself without the right tools. The error memory already points to it. It's probably a defective cable or plug connection. For peace of mind, I would recommend a visit to a workshop.
charlottemiller48 (community.author)
Understood. I appreciate the advice. I will take it to a workshop as you suggested. The repair cost came to 95€, it was indeed a defective cable. Thank you!
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CHEVROLET
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SUBURBAN
hannah_phoenix15
Hey there. I had something similar happen on my Chevrolet Suburban, though it was a while back. Does it crank at all, or is it completely dead? Could be a bad battery terminal or even a starter solenoid issue causing a voltage drop. Have you checked the wiring harness for any obvious breaks?