CHARGING SYSTEM FAILURE

2007 GMC Sierra

Tiny

cqcarpros

August, 11, 2011 AT 2:22 AM

Hello, I have a 2007 GMAC Sierra 1500. While driving the battery light came on and the dash displayed 'charging system failure'. The battery was tested and it tested good. Charging system tested while vehicle was running and it failed, no charge. Alternator was removed and bench tested and it passed all test. Reinstalled alternator was reinstalled, checked all terminals and wire connections to make sure they were secure. Dash continues to display 'charging system failure'. The dash volt meter shows that it is charging at 12 volts.

FOUND 4351 RELATED QUESTIONS

My Alternator Quit Charging

22 ANSWERS
31 IMAGES

Charging System Trouble

27 ANSWERS
5 IMAGES

2 Answers

Tiny

rasmataz

August, 11, 2011 AT 5:09 AM

Could be caused by the computer controlled of the alternator's field generation circuit-have it checked

Tiny

imthone

January, 29, 2013 AT 3:14 PM

Check belt make sure its not slipping

Please login or register to post a reply.

Alternator Replacement Chevrolet Silverado
Alternator Replacement Ford Super Duty
Alternator testing done right