Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello, B9 is for the intake air temperature sensor. I'll post the pin out chart and coolant sensor diagram below. Let me know how I can help further.
You're welcome, here's the trouble chart for code 15. If you have a scan tool that shows live data it's a litle easier to troubleshoot. A volt meter works as well.
Following that yellow wire from the intake air temp sensor back did it go to the computer?