I think we have some electrical gremlins at work on our 2001 Blazer.

1) When driving, the ABS & Brake light will come on for a split second, and when this happens, radio, heater and other devices will cut out for a fraction of a second. The first time this happened was earlier this week.

2) the next day, the car was stalling when coming to a stop, and the voltage meter on the dash would drop below 14 to the quarter line. Car would start up and drive fine once on the highway. Had the alternator and battery check out at Autozone and they were fine.

3) went the to store and turned off the ignition and the entire electrical system shut down. Electric door locks didn't open when the key was removed, radio stopped, dome lights went off. Tried to restart immediately and no power. After waiting a few minutes every thing was fine.

4) the check engine light has not come on.

5) In between these issues the car runs fine. Drove it 100 miles a couple of days ago with no issue and 80 miles yesterday with no issue until #1 showed up on the way home from a quick errand.

Appears to me like a short somewhere. Reading through posts here seem to indicate the problem might be the ignition switch or front wheel sensors. From #3 above I am leaning toward the ignition switch but don't understand how the abs / brake lights (#1 above) would relate to the ignition switch (other than power to all systems). Or could a short in the sensor wiring mess up the other systems?

Any guidance would be appreciated. Thank you.

 

for some strange reason theres like 10 things that run through the ignition switch, i was researching it a while back, due to other issues and theres like trans functions, rear defrost, etc ruining through it.

 

almost positive it's your ignition switch.