Tahoe is dead, electrically

[swathdiver]

Access to a Tech2 would make short work of this.

 

[rockola1971]

Access to a Tech2 would make short work of this.

Buy a ****** clone of one from here: https://www.aliexpress.com/wholesal...ext=gm+tech+2&initiative_id=RS_20171110174339 Its what I did and its well worth its weight in gold. Very easy to use and can do alot!

*Note* A BCM isnt going to shut you down like your symptom presents. Id be looking at the ignition switch down at the base of the steering column. It will shut you down exactly like your symptoms are.