GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.
New expert here.I apologize for the delay.
Have you had the fault codes checked/read out with scan tool that will plug in and communicate with all computers to see what codes are set with this issue here?
Let me know so we can continue,thanks Pete.
O.k.,was the scan tool used one that can read the body control module for fault codes at all?Some scan tools will only read the engine computer.
O.k.,you want to have the fault codes read out of the body computer.With this light on there should be at least one code set that will help diagnose and locate this issue.Is there any way you can get the codes read out using a scan tool that can read all computers?In some cases a local parts store might be able to read the body computer at no charge.
Let me know,thanks Pete
O.k.,let me know what you come up with when your ready.
Are you able to read the PCM at all or the BCM and do you have code numbers for this message/issue here?
If you clear out these codes do they come right back again when trying to start the vehicle?Clear them then turn off the key and back on and try and start and see what happens then.