im very angry! i spent to alternators works fine for 1 hour and then starts failing,!im very confused what a hell is going on!!!!!!
any help appreciate!the alternator is from a LS1 2001 M6

 

Maybe it's not the alternator as the cause but it's the effect of another problem. Load test the battery, check the battery cables for corrosion, and check all ground wires.

 

i change a new battery and still no chargin,what a hell is going on with my car,i will take it to a electric to see what is going on.

 

possibly a problem with your electrical system or a short in the wires leading to the alternator??

 

Check all the wiring connections to the alt - especially the exciter wire. If they're parts store remanufactured alts they might just be bad - friend of mine went through a couple of those before springing for a new OEM GM unit. Are you throwing any codes like generator L circuit, etc?

 

Thx all for the information?!do any one knows how many wires plug into the alternator harness?i question this because i can only see one wire in the plug that is connected to the alternator.

 

one thick wire goes to the battery and another thin to the PCM.... that's all

 

Check the wiring harness alternator connector(the Little red wire that goes plugged in your alternator

Also don't forget to double check your battery connections,I know everybody says they double and triple checked them but the same thing happened to me two days ago.I took out my rema. alternator to get it tested and guess what it passed so I go home and put it back together and put a New bolt on the positive side for the battery and everything was normal.

 

oh yes?
please help me......

 

i took to the electrician and he told me if the battery is no charge correctly like de 250 amp have then the alternator stars to overload and then burns.i will see this week if that was the problem,he rebuilt the alternator ,clean all the terminals and bought a new battery.Thx for information,

 

Switch the Ignition relay and Starter Relay with the Fan Relays before you do anything else. They're under the hood. I had a similar problem, turned out to be the crappy oem relays.

 

i will try to do that,thank you very much for responses,what problem to you have before?