had a bummer of an evening with the blazer today. I drove it about 1-1/2 hours away to pick up a new tent trailer and back, and about 5 minutes away from home it dies. All electrical gone.
No headlights, no brake lights, radio, ignition, nothing. The only other time I've seen something similar was losing the fusable link, but when I rewired it, I removed that and just have regular fuses, but all my fuses look good.
The weird thing is, I think the PCM still has power because I have an OBDII reader plugged into the port and the "active" light is on. Also, when I turn the key to the crank position, it doesn't crank, but the brake warning light does come on.
Also, the battery tests out to 12.73v.
guess I get to spend some time with my wiring notes and a multimeter.