GMC Troubleshooting Questions? Ask a Mechanic for Answers
I can chat with you back and forth but please accept the live phone call it's will be faster and more convienent, I have all the exp. needed to figure this I specialize in the area but you will need a voltmeter and test light. If you like to chat that will stil be ok let me know. Thanks
The problem is going to be a bad ECM, TCM or ficm not a neutral safety switch. But during testing you have to have a scanner than can read the 2104 and code? You need a voltmeter, small metal picks and small flat head and/or wire cutters and but connectors.
Sorry man but that Marco scanner will only pull ECM codes and we will need them from the TCM ECM and FICM to be accurate
No problem just let me know. Thanks