1999 Cadillac Escalade, thinking 5. 7 engine.
Driving down the road the other day and it shut down, gauges went crazy and simply died. It would crank, but quickly the battery died. Towed home and found the battery was "bad" (atleast this is what the guy at parts store said). Battery was 6 years old; so, replaced with new battery. Still would not start and found the fuse the the ECM blown. Replaced fuse and started right up.
A week later, wife driving down road and same thing happened. Rescued her and found the fuse to ECM blown again. Replaced fuse, it started up and was able to drive it home.
So, now I'm thinking maybe the altenator may be bad. Will have it checked out this weekend. Any thoughts? I'm thinking maybe the altenator is surging or something; which, destroyed first battery and sent a surge through system blowing fuse to ECM.
If it is not this, not sure where to look next. Sounds like I have a short somewhere, but strange it is only blowing fuse to ECM.