Electrical Problem

[dhansell22]

Recently my alternator died, my battery died, my high beams stopped working, and today my a/c stopped blowing. New battery, new alternator, and still electrical problems I pulled out the blower resistor and found this: a dime had somehow worked its way down to the bottom of the evaporator housing and shorted it out. You can see terminal E has melted and the dime has weld marks on it. What I'm wondering is what damage this has done. I think it is what killed the alternator but what's up with the lights? I checked them without the shorted part but the high beams still don't work. About a year ago I had the high beam/turn signal multi-switch and BCM replaced because of the same symptoms of no high beams. Did this short kill the BCM again?

 

 

 

 

 

[mooreapi]

dhansell,

I've had the same wire burn up on my 2000 ECSB 2wd, with no dime. I added in another ground wire that bypassed the harness (since my truck has 350k miles, I'm not concerned about warranty ;) ) and it blows again.

 

As for loosing the lights, does the security light blink all the time and will the battery die if you don't drive for a couple of days?

Check the TCM (actually for the BCM) in the lower left corner (as you face it) of the underhood fuse panel. I had a corroded and broken fuse in that location and caused a lot of screwy behavior, including no headlights.

 

Matt